diff --git a/cmake/glsl_compile.cmake b/cmake/glsl_compile.cmake index 5eafa21..ef50a76 100644 --- a/cmake/glsl_compile.cmake +++ b/cmake/glsl_compile.cmake @@ -22,7 +22,7 @@ macro(append_glsl_to_target target sources version) get_filename_component(FILE_NAME ${GLSL} NAME) - set(SPIRV "${CMAKE_CURRENT_BINARY_DIR}/shaders/${FILE_NAME}.spv") + set(SPIRV "${CMAKE_CURRENT_BINARY_DIR}/shaders//spv/${FILE_NAME}.spv") if (NOT EXISTS "${GLSL}") set(GLSL "${CMAKE_CURRENT_SOURCE_DIR}/${GLSL}") @@ -30,7 +30,7 @@ macro(append_glsl_to_target target sources version) add_custom_command( OUTPUT ${SPIRV} - COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/shaders + COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/shaders/spv COMMAND ${GLSL_VALIDATOR} -V${version} ${GLSL} -o ${SPIRV} DEPENDS ${GLSL} ) @@ -44,7 +44,7 @@ macro(append_glsl_to_target target sources version) add_dependencies(${target} Shaders) add_custom_command(TARGET ${target} POST_BUILD - COMMAND ${CMAKE_COMMAND} -E make_directory "$/shaders/" + COMMAND ${CMAKE_COMMAND} -E make_directory "$/shaders" COMMAND ${CMAKE_COMMAND} -E copy_directory "${CMAKE_CURRENT_BINARY_DIR}/shaders" "$/shaders" ) endmacro() diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt index 9da0694..e09a56c 100644 --- a/examples/CMakeLists.txt +++ b/examples/CMakeLists.txt @@ -102,12 +102,10 @@ add_sanitizers(agl-capture) # # Vulkan # -if (FALSE) - find_package(Vulkan) +find_package(Vulkan) - if (VULKAN_FOUND) - add_subdirectory(vk-shadertoy) - endif () +if (VULKAN_FOUND) + add_subdirectory(vk-shadertoy) endif () # diff --git a/examples/vk-shadertoy/CMakeLists.txt b/examples/vk-shadertoy/CMakeLists.txt index 9a021b1..732efef 100644 --- a/examples/vk-shadertoy/CMakeLists.txt +++ b/examples/vk-shadertoy/CMakeLists.txt @@ -31,13 +31,18 @@ add_executable(vk-shadertoy app.cc handlers.cc main.cc - vk_backend.cc - vk_image.cc - vk_buffer.cc + shader_toy.cc + vulkan/render.cc + vulkan/utils.cc + vulkan/vk_error_print.cc ) append_glsl_to_target(vk-shadertoy "${SHADER_SOURCES}" 100) +target_compile_definitions(vk-shadertoy PUBLIC -DVK_USE_PLATFORM_WAYLAND_KHR) + +target_include_directories(vk-shadertoy PRIVATE .) + target_link_libraries(vk-shadertoy PRIVATE waypp wayland-gen cxxopts::cxxopts) if (IPO_SUPPORT_RESULT) diff --git a/examples/vk-shadertoy/app.cc b/examples/vk-shadertoy/app.cc index 9fa1c31..379f9a6 100644 --- a/examples/vk-shadertoy/app.cc +++ b/examples/vk-shadertoy/app.cc @@ -25,60 +25,51 @@ #include -static constexpr uint32_t kOffscreenBuffers = 4; -void App::draw_frame(void* /* data */, const uint32_t /* time */) { - // auto window = static_cast(data); +void App::draw_frame(void * /* data */, const uint32_t /* time */) { + // auto window = static_cast(data); } -App::App(const Configuration& config) - : handlers_(std::make_unique()), - logging_(std::make_unique()) { - spdlog::info("{}", kAppTitle); +App::App(const Configuration &config) + : handlers_(std::make_unique()), + logging_(std::make_unique()) { + spdlog::info("{}", kAppTitle); - display_ = wl_display_connect(nullptr); - if (!display_) { - spdlog::critical("Unable to connect to Wayland socket."); - exit(EXIT_FAILURE); - } - - std::thread t1([&] { - backend_ = std::make_unique(kAppId, config.debug_enable); - }); + display_ = wl_display_connect(nullptr); + if (!display_) { + spdlog::critical("Unable to connect to Wayland socket."); + exit(EXIT_FAILURE); + } - std::thread t2([&] { + shadertoy_ = std::make_unique(); wm_ = std::make_unique(display_, config.disable_cursor); auto seat = wm_->get_seat(); if (seat.has_value()) { - seat.value()->register_observer(handlers_.get()); + seat.value()->register_observer(handlers_.get()); } spdlog::debug("XDG Window Manager Version: {}", wm_->get_version()); toplevel_ = wm_->create_top_level( - kAppTitle, kAppId, config.width, config.height, 0, 0, config.fullscreen, - config.maximized, config.fullscreen_ratio, config.tearing, draw_frame); + kAppTitle, kAppId, config.width, config.height, 0, 0, config.fullscreen, + config.maximized, config.fullscreen_ratio, config.tearing, draw_frame); spdlog::debug("XDG Window Version: {}", toplevel_->get_version()); - }); - t1.join(); - t2.join(); - backend_->CreateSurface(wm_->get_display(), toplevel_->get_surface(), - config.width, config.height, kOffscreenBuffers); + shadertoy_->init(config.width, config.height, display_, toplevel_->get_surface(), 0, true, true, true); - /// paint padding - toplevel_->set_surface_damage(0, 0, config.width, config.height); - toplevel_->start_frame_callbacks(); + /// paint padding + toplevel_->set_surface_damage(0, 0, config.width, config.height); + toplevel_->start_frame_callbacks(); } App::~App() { - toplevel_->stop_frame_callbacks(); - wl_display_flush(display_); - wl_display_flush(display_); + toplevel_->stop_frame_callbacks(); + wl_display_flush(display_); + wl_display_flush(display_); } bool App::run() { - /// display_dispatch is blocking - return (toplevel_->is_valid() && wm_->display_dispatch() != -1); + /// display_dispatch is blocking + return (toplevel_->is_valid() && wm_->display_dispatch() != -1); } diff --git a/examples/vk-shadertoy/app.h b/examples/vk-shadertoy/app.h index 68ba79e..b1f5ade 100644 --- a/examples/vk-shadertoy/app.h +++ b/examples/vk-shadertoy/app.h @@ -23,7 +23,7 @@ #include "handlers.h" #include "logging.h" -#include "vk_backend.h" +#include "shader_toy.h" #include "window/xdg_toplevel.h" class App { @@ -53,8 +53,8 @@ class App { std::unique_ptr logging_; std::unique_ptr handlers_; std::unique_ptr wm_; - std::unique_ptr backend_; XdgTopLevel* toplevel_; + std::unique_ptr shadertoy_; static void draw_frame(void* data, uint32_t time); }; diff --git a/examples/vk-shadertoy/screenshot.h b/examples/vk-shadertoy/screenshot.h new file mode 100644 index 0000000..429fe52 --- /dev/null +++ b/examples/vk-shadertoy/screenshot.h @@ -0,0 +1,365 @@ +#include "vulkan/render.h" + +class VulkanRender; + +vk_error +ShaderToy::transition_images_screenshot_swapchain_begin(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *srcImage, struct vk_image *dstImage) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + vkResetCommandBuffer(essentials->cmd_buffer, 0); + + VkCommandBufferBeginInfo begin_info{}; + begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; + begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; + + res = vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't begin recording a command buffer to screenshot image\n"); + return retval; + } + + VkImageMemoryBarrier image_barrier_dstImage{}; + image_barrier_dstImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_dstImage.srcAccessMask = 0; + image_barrier_dstImage.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + image_barrier_dstImage.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED; + image_barrier_dstImage.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + image_barrier_dstImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.image = dstImage->image; + image_barrier_dstImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_dstImage.subresourceRange.baseMipLevel = 0; + image_barrier_dstImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_dstImage.subresourceRange.baseArrayLayer = 0; + image_barrier_dstImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_dstImage); + + VkImageMemoryBarrier image_barrier_srcImage{}; + image_barrier_srcImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_srcImage.srcAccessMask = VK_ACCESS_MEMORY_READ_BIT; + image_barrier_srcImage.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + image_barrier_srcImage.oldLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; + image_barrier_srcImage.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + image_barrier_srcImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.image = srcImage->image; + image_barrier_srcImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_srcImage.subresourceRange.baseMipLevel = 0; + image_barrier_srcImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_srcImage.subresourceRange.baseArrayLayer = 0; + image_barrier_srcImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_srcImage); + + vkEndCommandBuffer(essentials->cmd_buffer); + + res = vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info{}; + submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; + submit_info.commandBufferCount = 1; + submit_info.pCommandBuffers = &essentials->cmd_buffer; + + vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + return retval; +} + +vk_error +ShaderToy::transition_images_screenshot_swapchain_end(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *srcImage, struct vk_image *dstImage) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + vkResetCommandBuffer(essentials->cmd_buffer, 0); + + VkCommandBufferBeginInfo begin_info{}; + begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; + begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; + + res = vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't begin recording a command buffer to screenshot image\n"); + return retval; + } + + VkImageMemoryBarrier image_barrier_dstImage{}; + image_barrier_dstImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_dstImage.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + image_barrier_dstImage.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; + image_barrier_dstImage.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + image_barrier_dstImage.newLayout = VK_IMAGE_LAYOUT_GENERAL; + image_barrier_dstImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.image = dstImage->image; + image_barrier_dstImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_dstImage.subresourceRange.baseMipLevel = 0; + image_barrier_dstImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_dstImage.subresourceRange.baseArrayLayer = 0; + image_barrier_dstImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_dstImage); + + VkImageMemoryBarrier image_barrier_srcImage{}; + image_barrier_srcImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_srcImage.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + image_barrier_srcImage.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; + image_barrier_srcImage.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + image_barrier_srcImage.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; + image_barrier_srcImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.image = srcImage->image; + image_barrier_srcImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_srcImage.subresourceRange.baseMipLevel = 0; + image_barrier_srcImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_srcImage.subresourceRange.baseArrayLayer = 0; + image_barrier_srcImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_srcImage); + + vkEndCommandBuffer(essentials->cmd_buffer); + + res = vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info{}; + submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; + submit_info.commandBufferCount = 1; + submit_info.pCommandBuffers = &essentials->cmd_buffer; + + vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + return retval; +} + +// RGBA BMP from https://en.wikipedia.org/wiki/BMP_file_format +unsigned char ev(int32_t v) { + static uint32_t counter = 0; + return (unsigned char) ((v) >> ((8 * (counter++)) % 32)); +} + +void write_bmp(uint32_t w, uint32_t h, const uint8_t *rgba) { + + static int scr_id = 0; + + if (!rgba) { + return; + } + + auto img = (unsigned char *) malloc(4 * w * h); + memset(img, 0, 4 * w * h); + + for (unsigned int x = 0; x < w; x++) { + for (unsigned int y = 0; y < h; y++) { + img[(x + y * w) * 4 + 3] = rgba[(x + (h - 1 - y) * w) * 4 + 0]; + img[(x + y * w) * 4 + 2] = rgba[(x + (h - 1 - y) * w) * 4 + 1]; + img[(x + y * w) * 4 + 1] = rgba[(x + (h - 1 - y) * w) * 4 + 2]; + img[(x + y * w) * 4 + 0] = rgba[(x + (h - 1 - y) * w) * 4 + 3]; + } + } + + auto filesize = static_cast(108 + 14 + 4 * w * h); + unsigned char bmp_file_header[14] = {'B', 'M', ev(filesize), ev(filesize), ev(filesize), ev(filesize), 0, 0, 0, 0, + 108 + 14, 0, 0, 0}; + + unsigned char bmp_info_header[108] = {108, 0, 0, 0, + ev(static_cast(w)), ev(static_cast(w)), ev( + static_cast(w)), ev(static_cast(w)), ev(-((int32_t) h)), ev(-((int32_t) h)), + ev(-((int32_t) h)), ev(-((int32_t) h)), 1, 0, 32, 0, 3, 0, 0, 0, ev( + static_cast(w * h * 4)), + ev(static_cast(w * h * 4)), ev(static_cast(w * h * 4)), ev( + static_cast(w * h * 4)), + ev(0x0b13), ev(0x0b13), ev(0x0b13), ev(0x0b13), ev(0x0b13), ev(0x0b13), + ev(0x0b13), ev(0x0b13), + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0xff, 0, 0, 0xff, 0, 0, 0xff, 0, 0, 0xff, 0, 0, 0, + ev(0x57696E20), ev(0x57696E20), ev(0x57696E20), ev(0x57696E20), + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + }; + + std::ostringstream ss; + ss << "screenshot_" << scr_id++ << ".bmp"; + auto f = fopen(ss.str().c_str(), "wb"); + fwrite(bmp_file_header, 1, 14, f); + fwrite(bmp_info_header, 1, 108, f); + for (int i = 0; i < h; i++) { + fwrite(img + (w * (h - static_cast(i) - 1) * 4), 4, w, f); + } + + free(img); + fclose(f); +} + +vk_error ShaderToy::make_screenshot(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct vk_render_essentials *essentials, struct render_data *render_data, + uint32_t image_index) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + if (!essentials->first_render) { + res = vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for fence failed\n"); + return retval; + } + } + + uint32_t support_format_list[4] = {VK_FORMAT_B8G8R8A8_SRGB, VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_SRGB, + VK_FORMAT_R8G8B8A8_UNORM}; + bool supported = false; + for (int i = 0; (i < 4) && (!supported); i++) { + if (swapchain->surface_format.format == support_format_list[i])supported = true; + } + supported &= swapchain->surface_caps.supportedUsageFlags & VK_IMAGE_USAGE_TRANSFER_SRC_BIT; + + if (!supported) { + vk_error_printf(&retval, "Can not save screenshot, surface has unique format or not supported transfer %lu\n", + (unsigned long) swapchain->surface_format.format); + return retval; + } + + struct vk_image srcImage{}; + srcImage.image = essentials->images[image_index]; + + struct vk_image dstImage{}; + dstImage.format = VK_FORMAT_R8G8B8A8_UNORM; //VK_FORMAT_R8G8B8A8_SRGB + dstImage.extent = render_data->main_gbuffers[image_index].surface_size; + dstImage.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT; + dstImage.stage = VK_SHADER_STAGE_FRAGMENT_BIT; + dstImage.make_view = false; + dstImage.host_visible = true; + dstImage.anisotropyEnable = true; + dstImage.repeat_mode = VK_SAMPLER_ADDRESS_MODE_REPEAT; //VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER //VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE + dstImage.mipmaps = false; + dstImage.linear = true; + + retval = VulkanUtils::create_images(phy_dev, dev, &dstImage, 1); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Failed to create dstImage for screenshot\n"); + return retval; + } + + retval = transition_images_screenshot_swapchain_begin(dev, essentials, &srcImage, &dstImage); + if (!vk_error_is_success(&retval)) { + return retval; + } + + VkImageCopy imageCopyRegion{}; + imageCopyRegion.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + imageCopyRegion.srcSubresource.layerCount = 1; + imageCopyRegion.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + imageCopyRegion.dstSubresource.layerCount = 1; + imageCopyRegion.extent.width = dstImage.extent.width; + imageCopyRegion.extent.height = dstImage.extent.height; + imageCopyRegion.extent.depth = 1; + + retval = VulkanRender::copy_image(dev, essentials, &dstImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &srcImage, + VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, &imageCopyRegion, "screenshot"); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Failed to copy image for screenshot\n"); + return retval; + } + + retval = transition_images_screenshot_swapchain_end(dev, essentials, &srcImage, &dstImage); + if (!vk_error_is_success(&retval)) { + return retval; + } + + VkImageSubresource subResource{}; + subResource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + + VkSubresourceLayout subResourceLayout; + vkGetImageSubresourceLayout(dev->device, dstImage.image, &subResource, &subResourceLayout); + + uint8_t *data; + vkMapMemory(dev->device, dstImage.image_mem, 0, VK_WHOLE_SIZE, 0, (void **) &data); + data += subResourceLayout.offset; + + int color_order[3] = {0, 1, 2}; + + if (swapchain->surface_format.format == VK_FORMAT_B8G8R8A8_SRGB || + swapchain->surface_format.format == VK_FORMAT_B8G8R8A8_UNORM) { + color_order[0] = 2; + color_order[1] = 1; + color_order[2] = 0; + } + + uint8_t *data_rgba; + data_rgba = (uint8_t *) malloc(4 * dstImage.extent.width * dstImage.extent.height); + for (uint32_t y = 0; y < dstImage.extent.height; y++) { + auto row = (uint8_t *) data; + for (uint32_t x = 0; x < dstImage.extent.width; x++) { + data_rgba[(x + y * dstImage.extent.width) * 4 + 0] = (uint8_t) row[x * 4 + + static_cast(color_order[0])]; + data_rgba[(x + y * dstImage.extent.width) * 4 + 1] = (uint8_t) row[x * 4 + + static_cast(color_order[1])]; + data_rgba[(x + y * dstImage.extent.width) * 4 + 2] = (uint8_t) row[x * 4 + + static_cast(color_order[2])]; + data_rgba[(x + y * dstImage.extent.width) * 4 + 3] = (uint8_t) row[x * 4 + 3]; + } + data += subResourceLayout.rowPitch; + } + + write_bmp(dstImage.extent.width, dstImage.extent.height, data_rgba); + + printf("screenshot done\n"); + + free(data_rgba); + vkUnmapMemory(dev->device, dstImage.image_mem); + VulkanUtils::free_images(dev, &dstImage, 1); + + return retval; +} diff --git a/examples/vk-shadertoy/shader_toy.cc b/examples/vk-shadertoy/shader_toy.cc new file mode 100644 index 0000000..17d2195 --- /dev/null +++ b/examples/vk-shadertoy/shader_toy.cc @@ -0,0 +1,1694 @@ + +#include "shader_toy.h" + +#include "textures.h" +#include "logging.h" + + +VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE + +const auto &d = vk::defaultDispatchLoaderDynamic; + +ShaderToy::ShaderToy() {} + +ShaderToy::~ShaderToy() {} + +int +ShaderToy::init(int width, int height, struct wl_display *wl_display, struct wl_surface *wl_surface, uint32_t dev_index, + bool use_gpu_idx, bool debug, bool reload_shaders, + VkPresentModeKHR present_mode) { + dev_index_ = dev_index; + use_gpu_idx_ = use_gpu_idx; + os_window_.print_debug = debug; + os_window_.reload_shaders_on_resize = reload_shaders; + os_window_.present_mode = present_mode; + + os_window_ = {}; + + os_window_.app_data.iResolution[0] = width; + os_window_.app_data.iResolution[1] = height; + os_window_.wl_display = wl_display; + os_window_.wl_surface = wl_surface; + + resize_size_[0] = static_cast(os_window_.app_data.iResolution[0]); + resize_size_[1] = static_cast(os_window_.app_data.iResolution[1]); + strncpy(os_window_.name, "Vulkan Shadertoy launcher", kAppNameStrLen); + + int retval = EXIT_FAILURE; + + vk_error res = VulkanUtils::init(&vk_); + if (!vk_error_is_success(&res)) { + vk_error_printf(&res, "Could not initialize Vulkan\n"); + return retval; + } + + res = create_surface(vk_, &swapchain_.surface, &os_window_); + if (vk_error_is_error(&res)) { + vk_error_printf(&res, "Could not create wl_surface.\n"); + exit_cleanup(vk_, nullptr, nullptr); + return retval; + } + + res = enumerate_devices(vk_, &swapchain_.surface, &phy_dev_, &dev_index, use_gpu_idx); + if (vk_error_is_error(&res)) { + vk_error_printf(&res, "Could not enumerate devices\n"); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySurfaceKHR(vk_, swapchain_.surface, nullptr); + exit_cleanup(vk_, nullptr, nullptr); + return retval; + } + + res = setup(&phy_dev_, &dev_, VK_QUEUE_GRAPHICS_BIT, 1 + OFFSCREEN_BUFFERS); // cmd buffers alloc + if (vk_error_is_error(&res)) { + vk_error_printf(&res, "Could not setup logical device, command pools and queues\n"); + exit_cleanup(vk_, &dev_, &swapchain_); + return retval; + } + + swapchain_.swapchain = VK_NULL_HANDLE; + res = get_swapchain(vk_, &phy_dev_, &dev_, &swapchain_, &os_window_, 1, &os_window_.present_mode); + if (vk_error_is_error(&res)) { + vk_error_printf(&res, "Could not create wl_surface and swapchain\n"); + exit_cleanup(vk_, &dev_, &swapchain_); + return retval; + } + + render_loop_init(&phy_dev_, &dev_, &swapchain_, &os_window_); + + return 0; +} + +void ShaderToy::update_key_map(int w, int h, bool val) { + keyboard_map_[w][h] = val; + keyboard_texture_[(h * 256 + w) * 4] = val ? 0xff : 0x00; +} + +void ShaderToy::update_keypress() { + if (keyboard_need_update_) + keyboard_draw_ = true; + else + keyboard_draw_ = false; + if (keyboard_need_update_) { + for (uint8_t i = 0; i < 0xff; i++) { + update_key_map(i, 1, false); + } + } + keyboard_need_update_ = false; +} + +#if 0 +bool ShaderToy::update_iKeyboard_texture(struct vk_physical_device * /* phy_dev */, struct vk_device * /* dev */, + struct vk_render_essentials * /* essentials */, + struct render_data * /* render_data */) { +#if 0 + vk_error retval = VK_ERROR_NONE; + VkResult res; + if (!keyboard_draw) + return true; + if (!essentials->first_render) { + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for fence failed\n"); + return false; + } + } + + retval = + vk_render_update_texture(phy_dev, dev, essentials, &render_data->images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS], + VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, keyboard_texture, "iKeyboard"); + if (!vk_error_is_success(&retval)) + return false; +#endif + return true; +} +#endif + +// static bool fullscreen = false; +// static bool fs_once = true; +static bool key_screenshot_once = true; +static bool screenshot_once = false; + +void ShaderToy::check_hotkeys(struct app_os_window *os_window) { + const int Key_Escape = 27, Key_Space = 32, Key_0 = 48, Key_1 = 49, Key_f = 70, Key_z = 90; + if (keyboard_map_[Key_Escape][1]) + os_window->app_data.quit = true; + if (keyboard_map_[Key_Space][1]) + os_window->app_data.pause = !os_window->app_data.pause; + if (keyboard_map_[Key_0][1]) + os_window->app_data.drawdebug = !os_window->app_data.drawdebug; + if (keyboard_map_[Key_1][1]) + os_window->fps_lock = !os_window->fps_lock; + if (keyboard_map_[Key_z][1]) { + if (key_screenshot_once) { + screenshot_once = true; + key_screenshot_once = false; + } + } else key_screenshot_once = true; +#if defined(VK_USE_PLATFORM_WAYLAND_KHR) + //example resize event for Wayland + if (keyboard_map_[Key_f][1]) { + os_window->resize_event = true; + static bool switch_res = true; + if (switch_res) { + switch_res = false; + os_window->app_data.iResolution[0] = 1920; + os_window->app_data.iResolution[1] = 1080; + } else { + switch_res = true; + os_window->app_data.iResolution[0] = 1280; + os_window->app_data.iResolution[1] = 720; + } + } +#else + if (keyboard_map[Key_f][1]||keyboard_map[Key_f11][1]) { + if (fs_once) { enterFullscreen(); fs_once = false; } + } + else fs_once = true; +#endif +} + +vk_error ShaderToy::allocate_render_data(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_swapchain *swapchain, struct vk_render_essentials *essentials, + struct render_data *render_data, bool reload_shaders) { + static bool load_once = false; + vk_error retval = VK_ERROR_NONE; + VkResult res; + if (!load_once) { + render_data->buffers[BUFFER_VERTICES] = (struct vk_buffer) { + .size = sizeof render_data->objects.vertices, + .usage = (VkBufferUsageFlagBits) (VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT), + .host_visible = false, + }; + + render_data->buffers[BUFFER_INDICES] = (struct vk_buffer) { + .size = sizeof render_data->objects.indices, + .usage = (VkBufferUsageFlagBits) (VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT), + .host_visible = false, + }; + + retval = create_buffers(phy_dev, dev, render_data->buffers, 2); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Failed to create vertex, index and transformation buffers\n"); + return retval; + } + } + if (!load_once) { + render_data->objects.vertices[0].pos[0] = 3.001f; + render_data->objects.vertices[0].pos[1] = 1.001f; + render_data->objects.vertices[0].pos[2] = 0.0f; + + render_data->objects.vertices[1].pos[0] = -1.001f; + render_data->objects.vertices[1].pos[1] = -3.001f; + render_data->objects.vertices[1].pos[2] = 0.0f; + + render_data->objects.vertices[2].pos[0] = -1.001f; + render_data->objects.vertices[2].pos[1] = 1.001f; + render_data->objects.vertices[2].pos[2] = 0.0f; + + render_data->objects.indices[0] = UINT16_C(0); + render_data->objects.indices[1] = UINT16_C(1); + render_data->objects.indices[2] = UINT16_C(2); + + retval = init_buffer(phy_dev, dev, essentials, &render_data->buffers[BUFFER_VERTICES], + render_data->objects.vertices, "vertex"); + if (!vk_error_is_success(&retval)) + return retval; + retval = init_buffer(phy_dev, dev, essentials, &render_data->buffers[BUFFER_INDICES], + render_data->objects.indices, "index"); + if (!vk_error_is_success(&retval)) + return retval; + + for (uint32_t i = 0; i < IMAGE_TEXTURES; i++) { + char txt[255] = {0}; + sprintf(txt, "textures/%d.png", i + 1); +#ifdef USE_stb_image + retval = init_texture_file(phy_dev, dev, essentials, &render_data->images[i], txt, USE_MIPMAPS); + if (!vk_error_is_success(&retval)) + retval = texture_empty(phy_dev, dev, essentials, &render_data->images[i], 1, 1); +#else + retval = texture_empty(phy_dev, dev, essentials, &render_data->images[i], 1, 1); + if (!vk_error_is_success(&retval)) + return retval; +#endif + } + for (uint32_t i = IMAGE_TEXTURES; i < IMAGE_TEXTURES + OFFSCREEN_BUFFERS; i++) { + retval = texture_empty(phy_dev, dev, essentials, &render_data->images[i], 1, 1); + if (!vk_error_is_success(&retval)) + return retval; + } + retval = texture_empty(phy_dev, dev, essentials, &render_data->images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS], 256, + 3); // iKeyboard + if (!vk_error_is_success(&retval)) + return retval; + } + if ((!load_once) || (reload_shaders)) { + render_data->shaders[SHADER_MAIN_VERTEX] = (struct vk_shader) { + .spirv_file = "shaders/spv/main.vert.spv", + .stage = VK_SHADER_STAGE_VERTEX_BIT, + }; + render_data->shaders[SHADER_MAIN_FRAGMENT] = (struct vk_shader) { + .spirv_file = "shaders/spv/main.frag.spv", + .stage = VK_SHADER_STAGE_FRAGMENT_BIT, + }; + char txt[OFFSCREEN_BUFFERS][255] = {0}; + for (uint32_t i = 0; i < OFFSCREEN_BUFFERS * 2; i += 2) { + render_data->shaders[i + 2] = (struct vk_shader) { + .spirv_file = "shaders/spv/buf.vert.spv", + .stage = VK_SHADER_STAGE_VERTEX_BIT, + }; + if (i > 0) { + sprintf(txt[i / 2], "shaders/spv/buf%d.frag.spv", i / 2); + } else { + sprintf(txt[i / 2], "shaders/spv/buf.frag.spv"); + } + render_data->shaders[i + 2 + 1] = (struct vk_shader) { + .spirv_file = txt[i / 2], + .stage = VK_SHADER_STAGE_FRAGMENT_BIT, + }; + } +#ifdef YARIV_SHADER + retval = vk_load_shader_yariv(dev, (const uint32_t *)vs_code, &render_data->shaders[SHADER_MAIN_VERTEX].shader, + sizeof(vs_code)); + if (!vk_error_is_success(&retval)) + { + vk_error_printf(&retval, "Could not load the shaders\n"); + return retval; + } + retval = vk_load_shader_yariv(dev, (const uint32_t *)fs_code, + &render_data->shaders[SHADER_MAIN_FRAGMENT].shader, sizeof(fs_code)); + if (!vk_error_is_success(&retval)) + { + vk_error_printf(&retval, "Could not load the shaders\n"); + return retval; + } + for (uint32_t i = 0; i < OFFSCREEN_BUFFERS * 2; i += 2) + { + retval = vk_load_shader_yariv(dev, (const uint32_t *)buf_vs_code, + &render_data->shaders[i + 2].shader, sizeof(buf_vs_code)); + if (!vk_error_is_success(&retval)) + { + vk_error_printf(&retval, "Could not load the shaders\n"); + return retval; + } + retval = vk_load_shader_yariv(dev, (const uint32_t *)(yariv_shaders[i/2]), + &render_data->shaders[i + 2 + 1].shader, yariv_shaders_size[i/2]); + if (!vk_error_is_success(&retval)) + { + vk_error_printf(&retval, "Could not load the shaders\n"); + return retval; + } + } +#else + retval = load_shaders(dev, render_data->shaders, 2 + OFFSCREEN_BUFFERS * 2); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Could not load the shaders\n"); + return retval; + } +#endif + } + struct VkExtent2D init_size{}; +#if defined(VK_USE_PLATFORM_WAYLAND_KHR) + init_size.width = resize_size_[0]; + init_size.height = resize_size_[1]; +#else + init_size.width = swapchain->surface_caps.currentExtent.width; + init_size.height = swapchain->surface_caps.currentExtent.height; +#endif + render_data->main_gbuffers = (struct vk_graphics_buffers *) malloc( + essentials->image_count * sizeof *render_data->main_gbuffers); + for (uint32_t i = 0; i < essentials->image_count; ++i) + render_data->main_gbuffers[i] = (struct vk_graphics_buffers) { + .surface_size = init_size, + .swapchain_image = essentials->images[i], + }; + +#ifdef NO_RESIZE_BUF + if (!load_once) + { +#endif + render_data->buf_obuffers = (struct vk_offscreen_buffers *) malloc( + 2 * (sizeof(*render_data->buf_obuffers)) * OFFSCREEN_BUFFERS); + for (uint32_t i = 0; i < 2 * OFFSCREEN_BUFFERS; i++) + render_data->buf_obuffers[i] = (struct vk_offscreen_buffers) + { +#if defined(CUSTOM_BUF_SIZE) && defined(NO_RESIZE_BUF) + .surface_size = (struct VkExtent2D)CUSTOM_BUF_SIZE, +#else + .surface_size = init_size, +#endif + }; +#ifdef NO_RESIZE_BUF + } +#endif + + // 8bit BGRA for main_image VK_FORMAT_B8G8R8A8_UNORM + if (swapchain->surface_format.format != VK_FORMAT_B8G8R8A8_UNORM) { + main_image_srgb_ = true; + } + retval = create_graphics_buffers(phy_dev, dev, swapchain->surface_format.format, + render_data->main_gbuffers, + essentials->image_count, &render_data->main_render_pass, VK_C_CLEAR, + VK_WITHOUT_DEPTH); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Could not create graphics buffers\n"); + return retval; + } + +#ifdef NO_RESIZE_BUF + if (!load_once) + { +#endif + for (uint32_t i = 0; i < OFFSCREEN_BUFFERS; i++) { + // 32 bit format RGBA for buffers VK_FORMAT_R32G32B32A32_SFLOAT + retval = create_offscreen_buffers(phy_dev, dev, VK_FORMAT_R32G32B32A32_SFLOAT, + &render_data->buf_obuffers[i * 2], 2, + &render_data->buf_render_pass[i], + VK_C_CLEAR, VK_WITHOUT_DEPTH, true); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Could not create off-screen buffers\n"); + return retval; + } + } +#ifdef NO_RESIZE_BUF + } +#endif + + struct vk_image **image_pointer; + image_pointer = (struct vk_image **) malloc( + 1 * sizeof(struct vk_image *) * (IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard)); + for (uint32_t i = 0; i < IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard; i++) { + image_pointer[i] = &render_data->images[i]; + } + + VkPushConstantRange push_constant_range = { + .stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT, + .offset = 0, + .size = sizeof render_data->push_constants, + }; + + /******************* + * BUF PART * + *******************/ +#ifdef NO_RESIZE_BUF + if (!load_once) + { +#endif + for (int i = 0; i < OFFSCREEN_BUFFERS; i++) { + /* Layouts */ + + struct vk_resources resources = { + .images = *image_pointer, + .image_count = IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard, + .buffers = render_data->buffers, + .buffer_count = 2, + .shaders = &render_data->shaders[SHADER_MAIN_FRAGMENT + 1 + i * 2], + .shader_count = 2, + .push_constants = &push_constant_range, + .push_constant_count = 1, + .render_pass = render_data->buf_render_pass[i], + }; + render_data->buf_layout[i] = (struct vk_layout) { + .resources = &resources, + }; + uint32_t img_patern[3] = {IMAGE_TEXTURES, OFFSCREEN_BUFFERS, iKeyboard}; + retval = make_graphics_layouts(dev, &render_data->buf_layout[i], 1, true, img_patern, 3); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "BUF: Could not create descriptor set or pipeline layouts\n"); + return retval; + } + + /* Pipeline */ + VkVertexInputBindingDescription vertex_binding = { + .binding = 0, + .stride = sizeof *render_data->objects.vertices, + .inputRate = VK_VERTEX_INPUT_RATE_VERTEX, + }; + + VkVertexInputAttributeDescription vertex_attributes[1] = { + { + .location = 0, + .binding = 0, + .format = VK_FORMAT_R32G32B32_SFLOAT, + .offset = 0, + }, + }; + render_data->buf_pipeline[i] = (struct vk_pipeline) { + .layout = &render_data->buf_layout[i], + .vertex_input_state = + { + .sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO, + .vertexBindingDescriptionCount = 1, + .pVertexBindingDescriptions = &vertex_binding, + .vertexAttributeDescriptionCount = 1, + .pVertexAttributeDescriptions = vertex_attributes, + }, + .input_assembly_state = + { + .sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO, + .topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP, + }, + .tessellation_state = + { + .sType = VK_STRUCTURE_TYPE_PIPELINE_TESSELLATION_STATE_CREATE_INFO, + }, + .thread_count = 1, + }; + + retval = make_graphics_pipelines(dev, &render_data->buf_pipeline[i], 1, false); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "BUF: Could not create graphics pipeline\n"); + return retval; + } + + /* Descriptor Set */ + VkDescriptorSetAllocateInfo set_info = { + .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO, + .descriptorPool = render_data->buf_pipeline[i].set_pool, + .descriptorSetCount = 1, + .pSetLayouts = &render_data->buf_layout[i].set_layout, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkAllocateDescriptorSets(dev->device, &set_info, + &render_data->buf_desc_set[i]); + retval = VK_ERROR_NONE; + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "BUF: Could not allocate descriptor set from pool\n"); + return retval; + } + } + +#ifdef NO_RESIZE_BUF + } +#endif + + /******************* + * MAIN_IMAGE PART * + *******************/ + { + /* Layouts */ + + struct vk_resources resources = { + .images = *image_pointer, + .image_count = IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard, + .buffers = render_data->buffers, + .buffer_count = 2, + .shaders = &render_data->shaders[SHADER_MAIN_VERTEX], + .shader_count = 2, + .push_constants = &push_constant_range, + .push_constant_count = 1, + .render_pass = render_data->main_render_pass, + }; + render_data->main_layout = (struct vk_layout) { + .resources = &resources, + }; + uint32_t img_patern[3] = {IMAGE_TEXTURES, OFFSCREEN_BUFFERS, iKeyboard}; + retval = make_graphics_layouts(dev, &render_data->main_layout, 1, true, img_patern, 3); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Could not create descriptor set or pipeline layouts\n"); + return retval; + } + + /* Pipeline */ + VkVertexInputBindingDescription vertex_binding = { + .binding = 0, + .stride = sizeof *render_data->objects.vertices, + .inputRate = VK_VERTEX_INPUT_RATE_VERTEX, + }; + + VkVertexInputAttributeDescription vertex_attributes[1] = { + { + .location = 0, + .binding = 0, + .format = VK_FORMAT_R32G32B32_SFLOAT, + .offset = 0, + }, + }; + render_data->main_pipeline = (struct vk_pipeline) { + .layout = &render_data->main_layout, + .vertex_input_state = + { + .sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO, + .vertexBindingDescriptionCount = 1, + .pVertexBindingDescriptions = &vertex_binding, + .vertexAttributeDescriptionCount = 1, + .pVertexAttributeDescriptions = vertex_attributes, + }, + .input_assembly_state = + { + .sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO, + .topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP, + }, + .tessellation_state = + { + .sType = VK_STRUCTURE_TYPE_PIPELINE_TESSELLATION_STATE_CREATE_INFO, + }, + .thread_count = 1, + }; + + retval = make_graphics_pipelines(dev, &render_data->main_pipeline, 1, false); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Could not create graphics pipeline\n"); + return retval; + } + + /* Descriptor Set */ + VkDescriptorSetAllocateInfo set_info = { + .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO, + .descriptorPool = render_data->main_pipeline.set_pool, + .descriptorSetCount = 1, + .pSetLayouts = &render_data->main_layout.set_layout, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkAllocateDescriptorSets(dev->device, &set_info, + &render_data->main_desc_set); + retval = VK_ERROR_NONE; + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Could not allocate descriptor set from pool\n"); + return retval; + } + } + + load_once = true; + free(image_pointer); + + return retval; +} + +void ShaderToy::free_render_data(struct vk_device *dev, struct vk_render_essentials *essentials, + struct render_data *render_data) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + free_pipelines(dev, &render_data->main_pipeline, 1); + free_layouts(dev, &render_data->main_layout, 1); + free_pipelines(dev, render_data->buf_pipeline, OFFSCREEN_BUFFERS); + free_layouts(dev, render_data->buf_layout, OFFSCREEN_BUFFERS); + free_images(dev, render_data->images, IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard); + + free_buffers(dev, render_data->buffers, 2); + free_shaders(dev, render_data->shaders, 2 + OFFSCREEN_BUFFERS * 2); + + for (int i = 0; i < OFFSCREEN_BUFFERS; i++) { + free_offscreen_buffers(dev, &render_data->buf_obuffers[i * 2], 2, render_data->buf_render_pass[i]); + } + free_graphics_buffers(dev, render_data->main_gbuffers, essentials->image_count, + render_data->main_render_pass); + + free(render_data->main_gbuffers); + free(render_data->buf_obuffers); +} + +// TO DO FREE BZUF FENCE LOOP +void ShaderToy::exit_cleanup_render_loop(struct vk_device *dev, struct vk_render_essentials *essentials, + struct render_data *render_data, VkSemaphore wait_buf_sem, + VkSemaphore wait_main_sem, VkFence offscreen_fence) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + if (offscreen_fence != VK_NULL_HANDLE) + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyFence(dev->device, offscreen_fence, nullptr); + if (wait_main_sem != VK_NULL_HANDLE) + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySemaphore(dev->device, wait_main_sem, nullptr); + if (wait_buf_sem != VK_NULL_HANDLE) + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySemaphore(dev->device, wait_buf_sem, nullptr); + free_render_data(dev, essentials, render_data); + cleanup_essentials(essentials, dev); +} + +void +ShaderToy::render_loop_init(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct app_os_window *os_window) { + int res; + vk_error retval = VK_ERROR_NONE; + static bool once = false; + + res = get_essentials(&essentials_, phy_dev, dev, swapchain); + if (res) { + cleanup_essentials(&essentials_, dev); + return; + } + + if (!once) { + uint32_t *presentable_queues = NULL; + uint32_t presentable_queue_count = 0; + + retval = get_presentable_queues(phy_dev, dev, swapchain->surface, &presentable_queues, + &presentable_queue_count); + if (!vk_error_is_success(&retval) || presentable_queue_count == 0) { + printf( + "No presentable queue families. You should have got this error in vk_render_get_essentials before.\n"); + free(presentable_queues); + cleanup_essentials(&essentials_, dev); + return; + } + + for (uint32_t i = 0; i < OFFSCREEN_BUFFERS; i++) { + offscreen_queue_[i] = + dev->command_pools[presentable_queues[0]].queues[0]; // used only one presentable queue always + offscreen_cmd_buffer_[i] = dev->command_pools[presentable_queues[0]].buffers[1 + i]; + } + + free(presentable_queues); + } + + retval = allocate_render_data(phy_dev, dev, swapchain, &essentials_, &render_data_, + os_window->reload_shaders_on_resize); + if (!vk_error_is_success(&retval)) { + free_render_data(dev, &essentials_, &render_data_); + cleanup_essentials(&essentials_, dev); + return; + } +#ifdef NO_RESIZE_BUF + if (!once) + { +#endif + for (int i = 0; i < OFFSCREEN_BUFFERS * 2; i++) { + retval = transition_images(dev, &essentials_, &render_data_.buf_obuffers[i].color, 1, + VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + VK_IMAGE_ASPECT_COLOR_BIT, "off-screen color"); + if (!vk_error_is_success(&retval)) { + free_render_data(dev, &essentials_, &render_data_); + cleanup_essentials(&essentials_, dev); + return; + } + } +#ifdef NO_RESIZE_BUF + } +#endif + if (!once) { + VkSemaphoreCreateInfo sem_info = { + .sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO, + }; + VkResult vk_res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateSemaphore(dev->device, &sem_info, NULL, &wait_buf_sem_); + vk_error_set_vkresult(&retval, vk_res); + if (vk_res) { + vk_error_printf(&retval, "Failed to create wait-render semaphore\n"); + exit_cleanup_render_loop(dev, &essentials_, &render_data_, wait_buf_sem_, wait_main_sem_, offscreen_fence_); + return; + } + vk_res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateSemaphore(dev->device, &sem_info, NULL, &wait_main_sem_); + vk_error_set_vkresult(&retval, vk_res); + if (vk_res) { + vk_error_printf(&retval, "Failed to create wait-post-process semaphore\n"); + exit_cleanup_render_loop(dev, &essentials_, &render_data_, wait_buf_sem_, wait_main_sem_, offscreen_fence_); + return; + } + + VkFenceCreateInfo fence_info = { + .sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO, + }; + vk_res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateFence(dev->device, &fence_info, NULL, &offscreen_fence_); + vk_error_set_vkresult(&retval, vk_res); + if (vk_res) { + vk_error_printf(&retval, "Failed to create fence\n"); + exit_cleanup_render_loop(dev, &essentials_, &render_data_, wait_buf_sem_, wait_main_sem_, offscreen_fence_); + return; + } + } + once = true; + os_window->prepared = true; + os_window->resize_event = false; +} + +void ShaderToy::exit_cleanup(VkInstance vk, struct vk_device *dev, struct vk_swapchain *swapchain) { + if (swapchain)free_swapchain(vk, dev, swapchain); + if (dev)cleanup(dev); + exit(vk); +} + +bool ShaderToy::on_window_resize(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, struct vk_swapchain *swapchain, + struct render_data *render_data, struct app_os_window *os_window) { + vk_error res = VK_ERROR_NONE; + + if (!os_window->prepared) + return true; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + os_window->prepared = false; + + resize_size_[0] = static_cast(os_window->app_data.iResolution[0]); + resize_size_[1] = static_cast(os_window->app_data.iResolution[1]); + + free_pipelines(dev, &render_data->main_pipeline, 1); + free_graphics_buffers(dev, render_data->main_gbuffers, essentials->image_count, + render_data->main_render_pass); + free_layouts(dev, &render_data->main_layout, 1); + +#ifndef NO_RESIZE_BUF + free_pipelines(dev, render_data->buf_pipeline, OFFSCREEN_BUFFERS); + for (int i = 0; i < OFFSCREEN_BUFFERS; i++) { + free_offscreen_buffers(dev, &render_data->buf_obuffers[i * 2], 2, render_data->buf_render_pass[i]); + } + free_layouts(dev, render_data->buf_layout, OFFSCREEN_BUFFERS); +#endif + + if (os_window->reload_shaders_on_resize) + free_shaders(dev, render_data->shaders, 2 + OFFSCREEN_BUFFERS * 2); + + cleanup_essentials(essentials, dev); + + free(render_data->main_gbuffers); + +#ifndef NO_RESIZE_BUF + free(render_data->buf_obuffers); +#endif + + res = get_swapchain(vk_, phy_dev, dev, swapchain, os_window, 1, &os_window->present_mode); + if (vk_error_is_error(&res)) { + vk_error_printf(&res, "Could not create wl_surface and swapchain\n"); + exit_cleanup(vk_, dev, swapchain); + return false; + } + + render_loop_init(phy_dev, dev, swapchain, os_window); + + return true; +} + +void ShaderToy::update_params(struct app_data_struct *app_data, bool fps_lock) { +#if 0 //TODO + if (fps_lock) { + FPS_LOCK(30); + } + float delta = update_fps_delta(); + if (!app_data->pause) { + app_data->iTime += delta; + } + app_data->iFrame++; + app_data->iTimeDelta = delta; +#endif //TODO +} + +void ShaderToy::set_push_constants(struct app_os_window *os_window) { +#if 0 //TODO + struct my_time_struct my_time{}; + get_local_time(&my_time); + float day_sec = ((float) my_time.msec) / 1000.0f + static_cast(my_time.sec) + + static_cast(my_time.min * 60) + static_cast(my_time.hour * 3600); +#endif //TODO + last_iMousel_clicked_[0] = last_iMousel_clicked_[1]; + last_iMousel_clicked_[1] = os_window->app_data.iMouse_click[0]; + + render_data_.push_constants.iResolution[0] = static_cast(os_window->app_data.iResolution[0]); + render_data_.push_constants.iResolution[1] = static_cast(os_window->app_data.iResolution[1]); + render_data_.push_constants.iTime = os_window->app_data.iTime; + render_data_.push_constants.iTimeDelta = os_window->app_data.iTimeDelta; + render_data_.push_constants.iFrame = os_window->app_data.iFrame; + render_data_.push_constants.iMouse[0] = static_cast(os_window->app_data.iMouse[0]); + render_data_.push_constants.iMouse[1] = static_cast(os_window->app_data.iMouse[1]); + render_data_.push_constants.iMouse[2] = static_cast(os_window->app_data.iMouse_lclick[0]); + render_data_.push_constants.iMouse[3] = static_cast((last_iMousel_clicked_[0]) ? -abs( + os_window->app_data.iMouse_lclick[1]) + : os_window->app_data.iMouse_lclick[1]); + render_data_.push_constants.iMouse_lr[0] = (int) os_window->app_data.iMouse_click[0]; + render_data_.push_constants.iMouse_lr[1] = (int) os_window->app_data.iMouse_click[1]; +#if 0 //TODO + render_data_.push_constants.iDate[0] = static_cast(my_time.year); + render_data_.push_constants.iDate[1] = static_cast(my_time.month); + render_data_.push_constants.iDate[2] = static_cast(my_time.day); + render_data_.push_constants.iDate[3] = day_sec; +#endif //TODO + render_data_.push_constants.debugdraw = (int) os_window->app_data.drawdebug; + render_data_.push_constants.pCustom = (os_window->app_data.pause ? 1 : 0) + (main_image_srgb_ ? 10 : 0); +} + +void ShaderToy::update_push_constants_window_size(struct app_os_window *os_window) { + render_data_.push_constants.iMouse[0] = static_cast(os_window->app_data.iMouse[0]); + render_data_.push_constants.iMouse[1] = static_cast(os_window->app_data.iMouse[1]); + render_data_.push_constants.iMouse[2] = static_cast(os_window->app_data.iMouse_lclick[0]); + render_data_.push_constants.iMouse[3] = static_cast( + (last_iMousel_clicked_[0]) ? -abs(os_window->app_data.iMouse_lclick[1]) + : os_window->app_data.iMouse_lclick[1]), + render_data_.push_constants.iResolution[0] = static_cast(os_window->app_data.iResolution[0]); + render_data_.push_constants.iResolution[1] = static_cast(os_window->app_data.iResolution[1]); +} + +#define sign(x) ((x > 0) ? 1 : ((x < 0) ? -1 : 0)) + +void ShaderToy::update_push_constants_local_size(float width, float height) { + render_data_.push_constants.iMouse[0] = + static_cast(((render_data_.push_constants.iMouse[0] / render_data_.push_constants.iResolution[1]) - + 0.5 * (render_data_.push_constants.iResolution[0] / + render_data_.push_constants.iResolution[1])) * + height + 0.5 * width); + render_data_.push_constants.iMouse[1] = static_cast( + ((render_data_.push_constants.iMouse[1] / render_data_.push_constants.iResolution[1]) - 0.5) * height + + 0.5 * height); + render_data_.push_constants.iMouse[2] = + static_cast(sign(render_data_.push_constants.iMouse[2]) * + (((fabs(render_data_.push_constants.iMouse[2]) / + render_data_.push_constants.iResolution[1]) - + 0.5 * (render_data_.push_constants.iResolution[0] / + render_data_.push_constants.iResolution[1])) * + height + 0.5 * width)); + render_data_.push_constants.iMouse[3] = + static_cast(sign(render_data_.push_constants.iMouse[3]) * + (((fabs(render_data_.push_constants.iMouse[3]) / + render_data_.push_constants.iResolution[1]) - 0.5) * height + + 0.5 * height)); + render_data_.push_constants.iResolution[0] = width; + render_data_.push_constants.iResolution[1] = height; +} + +bool ShaderToy::render_loop_buf(struct vk_physical_device * /* phy_dev */, struct vk_device *dev, + struct vk_render_essentials *essentials, struct render_data *render_data, + VkCommandBuffer cmd_buffer, int render_index, int buffer_index, + struct app_data_struct * /* app_data */) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + if ((!essentials->first_render) && (buffer_index == 0)) { + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for fence failed\n"); + return false; + } + } +#ifdef NO_RESIZE_BUF + update_push_constants_local_size(render_data->buf_obuffers[render_index + buffer_index * 2].surface_size.width, + render_data->buf_obuffers[render_index + buffer_index * 2].surface_size.height); +#endif + VULKAN_HPP_DEFAULT_DISPATCHER.vkResetCommandBuffer(cmd_buffer, 0); + VkCommandBufferBeginInfo begin_info = { + .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBeginCommandBuffer(cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "BUF: Couldn't even begin recording a command buffer\n"); + return false; + }; + VkImageMemoryBarrier image_barrier = { + .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER, + .srcAccessMask = VK_ACCESS_MEMORY_READ_BIT, + .dstAccessMask = VK_ACCESS_MEMORY_WRITE_BIT, + .oldLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + .newLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, + .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .image = render_data->buf_obuffers[render_index + buffer_index * 2].color.image, + .subresourceRange = + { + .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, + .baseMipLevel = 0, + .levelCount = 1, + .baseArrayLayer = 0, + .layerCount = 1, + }, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(cmd_buffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, + VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, 0, 0, NULL, + 0, NULL, 1, &image_barrier); + + VkClearValue clear_values = { + .color = + { + .float32 = {0.0, 0.0, 0.0, 0.0}, + }, + }; + VkRenderPassBeginInfo pass_info = { + .sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO, + .renderPass = render_data->buf_render_pass[buffer_index], + .framebuffer = render_data->buf_obuffers[render_index + buffer_index * 2].framebuffer, + .renderArea = + { + .offset = + { + .x = 0, + .y = 0, + }, + .extent = render_data->buf_obuffers[render_index + buffer_index * 2].surface_size, + }, + .clearValueCount = 1, + .pClearValues = &clear_values, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBeginRenderPass(cmd_buffer, &pass_info, VK_SUBPASS_CONTENTS_INLINE); + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindPipeline(cmd_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, + render_data->buf_pipeline[buffer_index].pipeline); + + int render_index_t[OFFSCREEN_BUFFERS]; + for (int i = 0; i < OFFSCREEN_BUFFERS; i++) { + if (i < buffer_index) { + render_index_t[i] = render_index + i * 2; + } else { + render_index_t[i] = render_index - 1 + i * 2; + if (render_index_t[i] < i * 2) + render_index_t[i] = 1 + i * 2; + } + } + + VkDescriptorImageInfo set_write_image_info[IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard] = {0}; + for (uint32_t i = 0; i < IMAGE_TEXTURES; i++) { + set_write_image_info[i] = (VkDescriptorImageInfo) { + .sampler = render_data->images[i].sampler, + .imageView = render_data->images[i].view, + .imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + }; + } + for (uint32_t i = 0; i < OFFSCREEN_BUFFERS; i++) { + set_write_image_info[IMAGE_TEXTURES + i] = (VkDescriptorImageInfo) { + .sampler = render_data->buf_obuffers[render_index_t[i]].color.sampler, + .imageView = render_data->buf_obuffers[render_index_t[i]].color.view, + .imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + }; + } + set_write_image_info[IMAGE_TEXTURES + OFFSCREEN_BUFFERS] = (VkDescriptorImageInfo) { + .sampler = render_data->images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS].sampler, + .imageView = render_data->images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS].view, + .imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + }; + + VkWriteDescriptorSet set_write[3] = { + { + .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, + .dstSet = render_data->buf_desc_set[buffer_index], + .dstBinding = 0, + .descriptorCount = IMAGE_TEXTURES, + .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .pImageInfo = &set_write_image_info[0], + }, + { + .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, + .dstSet = render_data->buf_desc_set[buffer_index], + .dstBinding = IMAGE_TEXTURES, + .descriptorCount = OFFSCREEN_BUFFERS, + .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .pImageInfo = &set_write_image_info[IMAGE_TEXTURES], + }, + { + .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, + .dstSet = render_data->buf_desc_set[buffer_index], + .dstBinding = IMAGE_TEXTURES + OFFSCREEN_BUFFERS, + .descriptorCount = iKeyboard, + .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .pImageInfo = &set_write_image_info[IMAGE_TEXTURES + OFFSCREEN_BUFFERS], + }, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkUpdateDescriptorSets(dev->device, 3, set_write, 0, NULL); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindDescriptorSets(cmd_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, + render_data->buf_layout[buffer_index].pipeline_layout, 0, 1, + &render_data->buf_desc_set[buffer_index], 0, NULL); + VkDeviceSize vertices_offset = 0; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindVertexBuffers(cmd_buffer, 0, 1, + &render_data->buffers[BUFFER_VERTICES].buffer, + &vertices_offset); + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindIndexBuffer(cmd_buffer, render_data->buffers[BUFFER_INDICES].buffer, 0, + VK_INDEX_TYPE_UINT16); + + VkViewport viewport = { + .x = 0, + .y = 0, + .width = static_cast(render_data->buf_obuffers[render_index + buffer_index * 2].surface_size.width), + .height = static_cast(render_data->buf_obuffers[render_index + + buffer_index * 2].surface_size.height), + .minDepth = 0, + .maxDepth = 1, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdSetViewport(cmd_buffer, 0, 1, &viewport); + + VkRect2D scissor = { + .offset = + { + .x = 0, + .y = 0, + }, + .extent = render_data->buf_obuffers[render_index + buffer_index * 2].surface_size, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdSetScissor(cmd_buffer, 0, 1, &scissor); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPushConstants(cmd_buffer, render_data->buf_layout[buffer_index].pipeline_layout, + VK_SHADER_STAGE_FRAGMENT_BIT, + 0, sizeof render_data->push_constants, + &render_data->push_constants); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdDrawIndexed(cmd_buffer, 3, 1, 0, 0, 0); + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdEndRenderPass(cmd_buffer); + + image_barrier = (VkImageMemoryBarrier) { + .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER, + .srcAccessMask = VK_ACCESS_MEMORY_WRITE_BIT, + .dstAccessMask = VK_ACCESS_MEMORY_READ_BIT, + .oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, + .newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .image = render_data->buf_obuffers[render_index + buffer_index * 2].color.image, + .subresourceRange = + { + .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, + .baseMipLevel = 0, + .levelCount = 1, + .baseArrayLayer = 0, + .layerCount = 1, + }, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(cmd_buffer, VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, + VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, + NULL, 0, NULL, 1, &image_barrier); + VULKAN_HPP_DEFAULT_DISPATCHER.vkEndCommandBuffer(cmd_buffer); + return true; +} + +bool +ShaderToy::render_loop_draw(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct app_os_window *os_window) { + if (!os_window->prepared) return true; + static int render_index = 0; + VkResult res; + vk_error retval = VK_ERROR_NONE; + + set_push_constants(os_window); + if (!update_iKeyboard_texture(phy_dev, dev, &essentials_, &render_data_)) + return false; + + for (int i = 0; i < OFFSCREEN_BUFFERS; i++) { + if (!render_loop_buf(phy_dev, dev, &essentials_, &render_data_, offscreen_cmd_buffer_[i], render_index, i, + &os_window->app_data)) { + printf("Error on rendering buffers \n"); + return false; + } + update_push_constants_window_size(os_window); + + if (i == 0) { // wait main screen + if (!first_submission_) { + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &offscreen_fence_, true, + 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for main fence failed\n"); + return false; + } + } + + VkPipelineStageFlags wait_sem_stages[1] = {VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT}; + VkSubmitInfo submit_info = { + .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO, + .waitSemaphoreCount = first_submission_ ? UINT32_C(0) : UINT32_C(1), + .pWaitSemaphores = &wait_main_sem_, + .pWaitDstStageMask = wait_sem_stages, + .commandBufferCount = 1, + .pCommandBuffers = &offscreen_cmd_buffer_[i], + .signalSemaphoreCount = 1, + .pSignalSemaphores = &wait_buf_sem_, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkResetFences(dev->device, 1, &offscreen_fence_); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return false; + } + VULKAN_HPP_DEFAULT_DISPATCHER.vkQueueSubmit(offscreen_queue_[i], 1, &submit_info, offscreen_fence_); + first_submission_ = false; + } else { // wait last buf/shader in loop, if multi VkQueue supported + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &offscreen_fence_, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for buf fence failed\n"); + return false; + } + + VkPipelineStageFlags wait_sem_stages[1] = {VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT}; + VkSubmitInfo submit_info = { + .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO, + .waitSemaphoreCount = 1, + .pWaitSemaphores = &wait_buf_sem_, + .pWaitDstStageMask = wait_sem_stages, + .commandBufferCount = 1, + .pCommandBuffers = &offscreen_cmd_buffer_[i], + .signalSemaphoreCount = 1, + .pSignalSemaphores = &wait_main_sem_, // used main sem + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkResetFences(dev->device, 1, &offscreen_fence_); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return false; + } + VULKAN_HPP_DEFAULT_DISPATCHER.vkQueueSubmit(offscreen_queue_[i], 1, &submit_info, offscreen_fence_); + VkSemaphore tmp_sem = wait_buf_sem_; + wait_buf_sem_ = wait_main_sem_; + wait_main_sem_ = tmp_sem; + } + } + + uint32_t image_index; + + int result = start(&essentials_, dev, swapchain, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, + &image_index); + if (result == VK_ERROR_OUT_OF_DATE_KHR) { + os_window->resize_event = true; + result = 0; + first_submission_ = true; + return true; + } else if (result == VK_ERROR_SURFACE_LOST_KHR) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySurfaceKHR(vk_, swapchain->surface, NULL); + retval = create_surface(vk_, &swapchain->surface, os_window); + if (!vk_error_is_success(&retval)) + return false; + os_window->resize_event = true; + result = 0; + first_submission_ = true; + return true; + } + if (result) + return false; + + VkClearValue clear_values = { + .color = + { + .float32 = {0.0f, 0.0f, 0.0f, 0.0f}, + }, + }; + VkRenderPassBeginInfo pass_info = { + .sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO, + .renderPass = render_data_.main_render_pass, + .framebuffer = render_data_.main_gbuffers[image_index].framebuffer, + .renderArea = + { + .offset = + { + .x = 0, + .y = 0, + }, + .extent = render_data_.main_gbuffers[image_index].surface_size, + }, + .clearValueCount = 1, + .pClearValues = &clear_values, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBeginRenderPass(essentials_.cmd_buffer, &pass_info, VK_SUBPASS_CONTENTS_INLINE); + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindPipeline(essentials_.cmd_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, + render_data_.main_pipeline.pipeline); + + VkDescriptorImageInfo set_write_image_info[IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard] = {0}; + for (uint32_t i = 0; i < IMAGE_TEXTURES; i++) { + set_write_image_info[i] = (VkDescriptorImageInfo) { + .sampler = render_data_.images[i].sampler, + .imageView = render_data_.images[i].view, + .imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + }; + } + for (uint32_t i = 0; i < OFFSCREEN_BUFFERS; i++) { + set_write_image_info[IMAGE_TEXTURES + i] = (VkDescriptorImageInfo) { + .sampler = render_data_.buf_obuffers[i * 2 + static_cast(render_index)].color.sampler, + .imageView = render_data_.buf_obuffers[i * 2 + static_cast(render_index)].color.view, + .imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + }; + } + set_write_image_info[IMAGE_TEXTURES + OFFSCREEN_BUFFERS] = (VkDescriptorImageInfo) { + .sampler = render_data_.images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS].sampler, + .imageView = render_data_.images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS].view, + .imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, + }; + + VkWriteDescriptorSet set_write[3] = { + { + .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, + .dstSet = render_data_.main_desc_set, + .dstBinding = 0, + .descriptorCount = IMAGE_TEXTURES, + .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .pImageInfo = &set_write_image_info[0], + }, + { + .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, + .dstSet = render_data_.main_desc_set, + .dstBinding = IMAGE_TEXTURES, + .descriptorCount = OFFSCREEN_BUFFERS, + .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .pImageInfo = &set_write_image_info[IMAGE_TEXTURES], + }, + { + .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET, + .dstSet = render_data_.main_desc_set, + .dstBinding = IMAGE_TEXTURES + OFFSCREEN_BUFFERS, + .descriptorCount = iKeyboard, + .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .pImageInfo = &set_write_image_info[IMAGE_TEXTURES + OFFSCREEN_BUFFERS], + }, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkUpdateDescriptorSets(dev->device, 3, set_write, 0, nullptr); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindDescriptorSets(essentials_.cmd_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, + render_data_.main_layout.pipeline_layout, 0, 1, + &render_data_.main_desc_set, 0, nullptr); + + VkDeviceSize vertices_offset = 0; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindVertexBuffers(essentials_.cmd_buffer, 0, 1, + &render_data_.buffers[BUFFER_VERTICES].buffer, + &vertices_offset); + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBindIndexBuffer(essentials_.cmd_buffer, + render_data_.buffers[BUFFER_INDICES].buffer, 0, + VK_INDEX_TYPE_UINT16); + + VkViewport viewport = { + .x = 0, + .y = 0, + .width = static_cast(render_data_.main_gbuffers[image_index].surface_size.width), + .height = static_cast(render_data_.main_gbuffers[image_index].surface_size.height), + .minDepth = 0, + .maxDepth = 1, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdSetViewport(essentials_.cmd_buffer, 0, 1, &viewport); + + VkRect2D scissor = { + .offset = + { + .x = 0, + .y = 0, + }, + .extent = render_data_.main_gbuffers[image_index].surface_size, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdSetScissor(essentials_.cmd_buffer, 0, 1, &scissor); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPushConstants(essentials_.cmd_buffer, render_data_.main_layout.pipeline_layout, + VK_SHADER_STAGE_FRAGMENT_BIT, + 0, + sizeof render_data_.push_constants, &render_data_.push_constants); + + // vkCmdDraw(essentials.cmd_buffer, 3, 1, 0, 0); + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdDrawIndexed(essentials_.cmd_buffer, 3, 1, 0, 0, 0); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdEndRenderPass(essentials_.cmd_buffer); + + result = finish(&essentials_, dev, swapchain, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, image_index, + wait_buf_sem_, wait_main_sem_); + + if (result == VK_ERROR_OUT_OF_DATE_KHR) { + os_window->resize_event = true; + result = 0; + } else if (result == VK_ERROR_SURFACE_LOST_KHR) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySurfaceKHR(vk_, swapchain->surface, NULL); + retval = create_surface(vk_, &swapchain->surface, os_window); + if (!vk_error_is_success(&retval)) + return false; + os_window->resize_event = true; + result = 0; + } + + if (result) + return false; + + if (screenshot_once) { + screenshot_once = false; + retval = make_screenshot(phy_dev, dev, swapchain, &essentials_, &render_data_, image_index); + if (!vk_error_is_success(&retval)) + return false; + } + + update_params(&os_window->app_data, os_window->fps_lock); + render_index = (render_index + 1) % 2; + return true; +} + +bool ShaderToy::update_iKeyboard_texture(struct vk_physical_device * /* phy_dev */, struct vk_device * /* dev */, + struct vk_render_essentials * /* essentials */, + struct render_data * /* render_data */) { +#if 0 + vk_error retval = VK_ERROR_NONE; + VkResult res; + if (!keyboard_draw) + return true; + if (!essentials->first_render) { + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for fence failed\n"); + return false; + } + } + + retval = + vk_render_update_texture(phy_dev, dev, essentials, &render_data->images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS], + VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, keyboard_texture, "iKeyboard"); + if (!vk_error_is_success(&retval)) + return false; +#endif + return true; +} + +vk_error +ShaderToy::transition_images_screenshot_swapchain_begin(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *srcImage, struct vk_image *dstImage) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + vkResetCommandBuffer(essentials->cmd_buffer, 0); + + VkCommandBufferBeginInfo begin_info{}; + begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; + begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; + + res = vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't begin recording a command buffer to screenshot image\n"); + return retval; + } + + VkImageMemoryBarrier image_barrier_dstImage{}; + image_barrier_dstImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_dstImage.srcAccessMask = 0; + image_barrier_dstImage.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + image_barrier_dstImage.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED; + image_barrier_dstImage.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + image_barrier_dstImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.image = dstImage->image; + image_barrier_dstImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_dstImage.subresourceRange.baseMipLevel = 0; + image_barrier_dstImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_dstImage.subresourceRange.baseArrayLayer = 0; + image_barrier_dstImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_dstImage); + + VkImageMemoryBarrier image_barrier_srcImage{}; + image_barrier_srcImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_srcImage.srcAccessMask = VK_ACCESS_MEMORY_READ_BIT; + image_barrier_srcImage.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + image_barrier_srcImage.oldLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; + image_barrier_srcImage.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + image_barrier_srcImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.image = srcImage->image; + image_barrier_srcImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_srcImage.subresourceRange.baseMipLevel = 0; + image_barrier_srcImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_srcImage.subresourceRange.baseArrayLayer = 0; + image_barrier_srcImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_srcImage); + + vkEndCommandBuffer(essentials->cmd_buffer); + + res = vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info{}; + submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; + submit_info.commandBufferCount = 1; + submit_info.pCommandBuffers = &essentials->cmd_buffer; + + vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + return retval; +} + +vk_error +ShaderToy::transition_images_screenshot_swapchain_end(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *srcImage, struct vk_image *dstImage) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + vkResetCommandBuffer(essentials->cmd_buffer, 0); + + VkCommandBufferBeginInfo begin_info{}; + begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; + begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; + + res = vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't begin recording a command buffer to screenshot image\n"); + return retval; + } + + VkImageMemoryBarrier image_barrier_dstImage{}; + image_barrier_dstImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_dstImage.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + image_barrier_dstImage.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; + image_barrier_dstImage.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + image_barrier_dstImage.newLayout = VK_IMAGE_LAYOUT_GENERAL; + image_barrier_dstImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_dstImage.image = dstImage->image; + image_barrier_dstImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_dstImage.subresourceRange.baseMipLevel = 0; + image_barrier_dstImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_dstImage.subresourceRange.baseArrayLayer = 0; + image_barrier_dstImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_dstImage); + + VkImageMemoryBarrier image_barrier_srcImage{}; + image_barrier_srcImage.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier_srcImage.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + image_barrier_srcImage.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; + image_barrier_srcImage.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + image_barrier_srcImage.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; + image_barrier_srcImage.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier_srcImage.image = srcImage->image; + image_barrier_srcImage.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + image_barrier_srcImage.subresourceRange.baseMipLevel = 0; + image_barrier_srcImage.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier_srcImage.subresourceRange.baseArrayLayer = 0; + image_barrier_srcImage.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_TRANSFER_BIT, + 0, + 0, nullptr, + 0, nullptr, + 1, &image_barrier_srcImage); + + vkEndCommandBuffer(essentials->cmd_buffer); + + res = vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info{}; + submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; + submit_info.commandBufferCount = 1; + submit_info.pCommandBuffers = &essentials->cmd_buffer; + + vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + return retval; +} + +// RGBA BMP from https://en.wikipedia.org/wiki/BMP_file_format +unsigned char ShaderToy::ev(int32_t v) { + static uint32_t counter = 0; + return (unsigned char) ((v) >> ((8 * (counter++)) % 32)); +} + +void ShaderToy::write_bmp(uint32_t w, uint32_t h, const uint8_t *rgba) { + + static int scr_id = 0; + + if (!rgba) { + return; + } + + auto img = (unsigned char *) malloc(4 * w * h); + memset(img, 0, 4 * w * h); + + for (unsigned int x = 0; x < w; x++) { + for (unsigned int y = 0; y < h; y++) { + img[(x + y * w) * 4 + 3] = rgba[(x + (h - 1 - y) * w) * 4 + 0]; + img[(x + y * w) * 4 + 2] = rgba[(x + (h - 1 - y) * w) * 4 + 1]; + img[(x + y * w) * 4 + 1] = rgba[(x + (h - 1 - y) * w) * 4 + 2]; + img[(x + y * w) * 4 + 0] = rgba[(x + (h - 1 - y) * w) * 4 + 3]; + } + } + + auto filesize = static_cast(108 + 14 + 4 * w * h); + unsigned char bmp_file_header[14] = {'B', 'M', ev(filesize), ev(filesize), ev(filesize), ev(filesize), 0, 0, 0, 0, + 108 + 14, 0, 0, 0}; + + unsigned char bmp_info_header[108] = {108, 0, 0, 0, + ev(static_cast(w)), ev(static_cast(w)), ev( + static_cast(w)), ev(static_cast(w)), ev(-((int32_t) h)), ev(-((int32_t) h)), + ev(-((int32_t) h)), ev(-((int32_t) h)), 1, 0, 32, 0, 3, 0, 0, 0, ev( + static_cast(w * h * 4)), + ev(static_cast(w * h * 4)), ev(static_cast(w * h * 4)), ev( + static_cast(w * h * 4)), + ev(0x0b13), ev(0x0b13), ev(0x0b13), ev(0x0b13), ev(0x0b13), ev(0x0b13), + ev(0x0b13), ev(0x0b13), + 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0xff, 0, 0, 0xff, 0, 0, 0xff, 0, 0, 0xff, 0, 0, 0, + ev(0x57696E20), ev(0x57696E20), ev(0x57696E20), ev(0x57696E20), + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + }; + + std::ostringstream ss; + ss << "screenshot_" << scr_id++ << ".bmp"; + auto f = fopen(ss.str().c_str(), "wb"); + fwrite(bmp_file_header, 1, 14, f); + fwrite(bmp_info_header, 1, 108, f); + for (int i = 0; i < h; i++) { + fwrite(img + (w * (h - static_cast(i) - 1) * 4), 4, w, f); + } + + free(img); + fclose(f); +} + +vk_error +ShaderToy::make_screenshot(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct vk_render_essentials *essentials, struct render_data *render_data, + uint32_t image_index) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + if (!essentials->first_render) { + res = vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for fence failed\n"); + return retval; + } + } + + uint32_t support_format_list[4] = {VK_FORMAT_B8G8R8A8_SRGB, VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_SRGB, + VK_FORMAT_R8G8B8A8_UNORM}; + bool supported = false; + for (int i = 0; (i < 4) && (!supported); i++) { + if (swapchain->surface_format.format == support_format_list[i])supported = true; + } + supported &= swapchain->surface_caps.supportedUsageFlags & VK_IMAGE_USAGE_TRANSFER_SRC_BIT; + + if (!supported) { + vk_error_printf(&retval, "Can not save screenshot, surface has unique format or not supported transfer %lu\n", + (unsigned long) swapchain->surface_format.format); + return retval; + } + + struct vk_image srcImage{}; + srcImage.image = essentials->images[image_index]; + + struct vk_image dstImage{}; + dstImage.format = VK_FORMAT_R8G8B8A8_UNORM; //VK_FORMAT_R8G8B8A8_SRGB + dstImage.extent = render_data->main_gbuffers[image_index].surface_size; + dstImage.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT; + dstImage.stage = VK_SHADER_STAGE_FRAGMENT_BIT; + dstImage.make_view = false; + dstImage.host_visible = true; + dstImage.anisotropyEnable = true; + dstImage.repeat_mode = VK_SAMPLER_ADDRESS_MODE_REPEAT; //VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER //VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE + dstImage.mipmaps = false; + dstImage.linear = true; + + retval = VulkanUtils::create_images(phy_dev, dev, &dstImage, 1); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Failed to create dstImage for screenshot\n"); + return retval; + } + + retval = transition_images_screenshot_swapchain_begin(dev, essentials, &srcImage, &dstImage); + if (!vk_error_is_success(&retval)) { + return retval; + } + + VkImageCopy imageCopyRegion{}; + imageCopyRegion.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + imageCopyRegion.srcSubresource.layerCount = 1; + imageCopyRegion.dstSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + imageCopyRegion.dstSubresource.layerCount = 1; + imageCopyRegion.extent.width = dstImage.extent.width; + imageCopyRegion.extent.height = dstImage.extent.height; + imageCopyRegion.extent.depth = 1; + + retval = VulkanRender::copy_image(dev, essentials, &dstImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &srcImage, + VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, &imageCopyRegion, "screenshot"); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Failed to copy image for screenshot\n"); + return retval; + } + + retval = transition_images_screenshot_swapchain_end(dev, essentials, &srcImage, &dstImage); + if (!vk_error_is_success(&retval)) { + return retval; + } + + VkImageSubresource subResource{}; + subResource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + + VkSubresourceLayout subResourceLayout; + vkGetImageSubresourceLayout(dev->device, dstImage.image, &subResource, &subResourceLayout); + + uint8_t *data; + vkMapMemory(dev->device, dstImage.image_mem, 0, VK_WHOLE_SIZE, 0, (void **) &data); + data += subResourceLayout.offset; + + int color_order[3] = {0, 1, 2}; + + if (swapchain->surface_format.format == VK_FORMAT_B8G8R8A8_SRGB || + swapchain->surface_format.format == VK_FORMAT_B8G8R8A8_UNORM) { + color_order[0] = 2; + color_order[1] = 1; + color_order[2] = 0; + } + + uint8_t *data_rgba; + data_rgba = (uint8_t *) malloc(4 * dstImage.extent.width * dstImage.extent.height); + for (uint32_t y = 0; y < dstImage.extent.height; y++) { + auto row = (uint8_t *) data; + for (uint32_t x = 0; x < dstImage.extent.width; x++) { + data_rgba[(x + y * dstImage.extent.width) * 4 + 0] = (uint8_t) row[x * 4 + + static_cast(color_order[0])]; + data_rgba[(x + y * dstImage.extent.width) * 4 + 1] = (uint8_t) row[x * 4 + + static_cast(color_order[1])]; + data_rgba[(x + y * dstImage.extent.width) * 4 + 2] = (uint8_t) row[x * 4 + + static_cast(color_order[2])]; + data_rgba[(x + y * dstImage.extent.width) * 4 + 3] = (uint8_t) row[x * 4 + 3]; + } + data += subResourceLayout.rowPitch; + } + + write_bmp(dstImage.extent.width, dstImage.extent.height, data_rgba); + + spdlog::info("screenshot done"); + + free(data_rgba); + vkUnmapMemory(dev->device, dstImage.image_mem); + VulkanUtils::free_images(dev, &dstImage, 1); + + return retval; +} diff --git a/examples/vk-shadertoy/shader_toy.h b/examples/vk-shadertoy/shader_toy.h new file mode 100644 index 0000000..7141657 --- /dev/null +++ b/examples/vk-shadertoy/shader_toy.h @@ -0,0 +1,177 @@ + +#pragma once + +#include "vulkan/utils.h" +#include "vulkan/render.h" + +class VulkanUtils; + +class VulkanRender; + +class ShaderToy : public VulkanUtils, public VulkanRender { +public: + + ShaderToy(); + + ~ShaderToy(); + + int init(int width, int height, struct wl_display *wl_display, struct wl_surface *wl_surface, uint32_t dev_index, + bool use_gpu_idx, bool debug, bool reload_shaders, + VkPresentModeKHR present_mode = VkPresentModeKHR::VK_PRESENT_MODE_FIFO_KHR); + +private: + + uint32_t resize_size_[2]; // = {1280, 720}; // in Wayland surface should set own size + + bool main_image_srgb_ = false; // srgb surface fix + + // keyboard is texture that send from this data + bool keyboard_map_[0xff][3]{}; //[ASCII code][0: current state of key, 1: Keypress, 2: toggle for key] + uint8_t keyboard_texture_[256 * 3 * 4]{}; // texture + bool keyboard_need_update_{}; + bool keyboard_draw_{}; + +// update to 2021 Shadertoy iMouse.w change https://www.shadertoy.com/view/llySRh (comments) + bool last_iMousel_clicked_[2] = {}; + +// do not edit, it just to see where keyboard texture used +#define iKeyboard 1 + +// to build-in compressed shaders into bin(exe) file +// used OFFSCREEN_BUFFERS size, names of .hex files should be set manually(and edit yariv_shaders[]), this example using 4 buffers same as on shadertoy +//#define YARIV_SHADER + + struct shaders_push_constants { + float iMouse[4]; + float iDate[4]; + int iMouse_lr[2]; + float iResolution[2]; + int debugdraw; // look function check_hotkeys + int pCustom; //custom data + float iTime; + float iTimeDelta; + int iFrame; + }; + + enum { + BUFFER_VERTICES = 0, + BUFFER_INDICES = 1, + }; + enum { + SHADER_MAIN_VERTEX = 0, + SHADER_MAIN_FRAGMENT = 1, + }; + + struct render_data { + struct objects { + struct vertex { + float pos[3]; + } vertices[3]; + + uint16_t indices[3]; + } objects; + + struct shaders_push_constants push_constants; + + struct vk_image images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard]; + struct vk_buffer buffers[2]; + struct vk_shader shaders[2 + OFFSCREEN_BUFFERS * 2]; + struct vk_graphics_buffers *main_gbuffers; + struct vk_offscreen_buffers *buf_obuffers; + + VkRenderPass buf_render_pass[OFFSCREEN_BUFFERS]; + struct vk_layout buf_layout[OFFSCREEN_BUFFERS]; + struct vk_pipeline buf_pipeline[OFFSCREEN_BUFFERS]; + VkDescriptorSet buf_desc_set[OFFSCREEN_BUFFERS]; + + VkRenderPass main_render_pass; + struct vk_layout main_layout; + struct vk_pipeline main_pipeline; + VkDescriptorSet main_desc_set; + + } render_data_; + + uint32_t dev_index_; + bool use_gpu_idx_; + + VkInstance vk_; + struct vk_physical_device phy_dev_{}; + struct vk_device dev_{}; + struct vk_swapchain swapchain_{}; + struct app_os_window os_window_{}; + + struct vk_render_essentials essentials_; + + VkFence offscreen_fence_ = VK_NULL_HANDLE; + VkQueue offscreen_queue_[OFFSCREEN_BUFFERS] = {VK_NULL_HANDLE}; + VkCommandBuffer offscreen_cmd_buffer_[OFFSCREEN_BUFFERS] = {VK_NULL_HANDLE}; + VkSemaphore wait_buf_sem_ = VK_NULL_HANDLE; + VkSemaphore wait_main_sem_ = VK_NULL_HANDLE; + bool first_submission_ = true; + + void update_key_map(int w, int h, bool val); + + void update_keypress(); + + void check_hotkeys(struct app_os_window *os_window); + + vk_error allocate_render_data(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_swapchain *swapchain, struct vk_render_essentials *essentials, + struct render_data *render_data, bool reload_shaders); + + void free_render_data(struct vk_device *dev, struct vk_render_essentials *essentials, + struct render_data *render_data); + + void exit_cleanup_render_loop(struct vk_device *dev, struct vk_render_essentials *essentials, + struct render_data *render_data, VkSemaphore wait_buf_sem, + VkSemaphore wait_main_sem, VkFence offscreen_fence); + + void + render_loop_init(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct app_os_window *os_window); + + void exit_cleanup(VkInstance vk, struct vk_device *dev, struct vk_swapchain *swapchain); + + bool on_window_resize(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, struct vk_swapchain *swapchain, + struct render_data *render_data, struct app_os_window *os_window); + + void update_params(struct app_data_struct *app_data, bool fps_lock); + + void set_push_constants(struct app_os_window *os_window); + + void update_push_constants_window_size(struct app_os_window *os_window); + + void update_push_constants_local_size(float width, float height); + + bool render_loop_buf(struct vk_physical_device * /* phy_dev */, struct vk_device *dev, + struct vk_render_essentials *essentials, struct render_data *render_data, + VkCommandBuffer cmd_buffer, int render_index, int buffer_index, + struct app_data_struct * /* app_data */); + + + bool + render_loop_draw(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct app_os_window *os_window); + + bool update_iKeyboard_texture(struct vk_physical_device * /* phy_dev */, struct vk_device * /* dev */, + struct vk_render_essentials * /* essentials */, + struct render_data * /* render_data */); + + vk_error + transition_images_screenshot_swapchain_begin(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *srcImage, struct vk_image *dstImage); + + vk_error + transition_images_screenshot_swapchain_end(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *srcImage, struct vk_image *dstImage); + +// RGBA BMP from https://en.wikipedia.org/wiki/BMP_file_format + inline unsigned char ev(int32_t v); + + void write_bmp(uint32_t w, uint32_t h, const uint8_t *rgba); + + vk_error make_screenshot(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_swapchain *swapchain, + struct vk_render_essentials *essentials, struct render_data *render_data, + uint32_t image_index); +}; \ No newline at end of file diff --git a/examples/vk-shadertoy/stb_image.h b/examples/vk-shadertoy/stb_image.h new file mode 100644 index 0000000..a3865f5 --- /dev/null +++ b/examples/vk-shadertoy/stb_image.h @@ -0,0 +1,8073 @@ +/* stb_image - v2.29 - public domain image loader - http://nothings.org/stb + no warranty implied; use at your own risk + + Do this: + #define STB_IMAGE_IMPLEMENTATION + before you include this file in *one* C or C++ file to create the implementation. + + // i.e. it should look like this: + #include ... + #include ... + #include ... + #define STB_IMAGE_IMPLEMENTATION + #include "stb_image.h" + + You can #define STBI_ASSERT(x) before the #include to avoid using assert.h. + And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free + + + QUICK NOTES: + Primarily of interest to game developers and other people who can + avoid problematic images and only need the trivial interface + + JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib) + PNG 1/2/4/8/16-bit-per-channel + + TGA (not sure what subset, if a subset) + BMP non-1bpp, non-RLE + PSD (composited view only, no extra channels, 8/16 bit-per-channel) + + GIF (*comp always reports as 4-channel) + HDR (radiance rgbE format) + PIC (Softimage PIC) + PNM (PPM and PGM binary only) + + Animated GIF still needs a proper API, but here's one way to do it: + http://gist.github.com/urraka/685d9a6340b26b830d49 + + - decode from memory or through FILE (define STBI_NO_STDIO to remove code) + - decode from arbitrary I/O callbacks + - SIMD acceleration on x86/x64 (SSE2) and ARM (NEON) + + Full documentation under "DOCUMENTATION" below. + + +LICENSE + + See end of file for license information. + +RECENT REVISION HISTORY: + + 2.29 (2023-05-xx) optimizations + 2.28 (2023-01-29) many error fixes, security errors, just tons of stuff + 2.27 (2021-07-11) document stbi_info better, 16-bit PNM support, bug fixes + 2.26 (2020-07-13) many minor fixes + 2.25 (2020-02-02) fix warnings + 2.24 (2020-02-02) fix warnings; thread-local failure_reason and flip_vertically + 2.23 (2019-08-11) fix clang static analysis warning + 2.22 (2019-03-04) gif fixes, fix warnings + 2.21 (2019-02-25) fix typo in comment + 2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) bugfix, 1-bit BMP, 16-bitness query, fix warnings + 2.16 (2017-07-23) all functions have 16-bit variants; optimizations; bugfixes + 2.15 (2017-03-18) fix png-1,2,4; all Imagenet JPGs; no runtime SSE detection on GCC + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-12-04) experimental 16-bit API, only for PNG so far; fixes + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) 16-bit PNGS; enable SSE2 in non-gcc x64 + RGB-format JPEG; remove white matting in PSD; + allocate large structures on the stack; + correct channel count for PNG & BMP + 2.10 (2016-01-22) avoid warning introduced in 2.09 + 2.09 (2016-01-16) 16-bit TGA; comments in PNM files; STBI_REALLOC_SIZED + + See end of file for full revision history. + + + ============================ Contributors ========================= + + Image formats Extensions, features + Sean Barrett (jpeg, png, bmp) Jetro Lauha (stbi_info) + Nicolas Schulz (hdr, psd) Martin "SpartanJ" Golini (stbi_info) + Jonathan Dummer (tga) James "moose2000" Brown (iPhone PNG) + Jean-Marc Lienher (gif) Ben "Disch" Wenger (io callbacks) + Tom Seddon (pic) Omar Cornut (1/2/4-bit PNG) + Thatcher Ulrich (psd) Nicolas Guillemot (vertical flip) + Ken Miller (pgm, ppm) Richard Mitton (16-bit PSD) + github:urraka (animated gif) Junggon Kim (PNM comments) + Christopher Forseth (animated gif) Daniel Gibson (16-bit TGA) + socks-the-fox (16-bit PNG) + Jeremy Sawicki (handle all ImageNet JPGs) + Optimizations & bugfixes Mikhail Morozov (1-bit BMP) + Fabian "ryg" Giesen Anael Seghezzi (is-16-bit query) + Arseny Kapoulkine Simon Breuss (16-bit PNM) + John-Mark Allen + Carmelo J Fdez-Aguera + + Bug & warning fixes + Marc LeBlanc David Woo Guillaume George Martins Mozeiko + Christpher Lloyd Jerry Jansson Joseph Thomson Blazej Dariusz Roszkowski + Phil Jordan Dave Moore Roy Eltham + Hayaki Saito Nathan Reed Won Chun + Luke Graham Johan Duparc Nick Verigakis the Horde3D community + Thomas Ruf Ronny Chevalier github:rlyeh + Janez Zemva John Bartholomew Michal Cichon github:romigrou + Jonathan Blow Ken Hamada Tero Hanninen github:svdijk + Eugene Golushkov Laurent Gomila Cort Stratton github:snagar + Aruelien Pocheville Sergio Gonzalez Thibault Reuille github:Zelex + Cass Everitt Ryamond Barbiero github:grim210 + Paul Du Bois Engin Manap Aldo Culquicondor github:sammyhw + Philipp Wiesemann Dale Weiler Oriol Ferrer Mesia github:phprus + Josh Tobin Neil Bickford Matthew Gregan github:poppolopoppo + Julian Raschke Gregory Mullen Christian Floisand github:darealshinji + Baldur Karlsson Kevin Schmidt JR Smith github:Michaelangel007 + Brad Weinberger Matvey Cherevko github:mosra + Luca Sas Alexander Veselov Zack Middleton [reserved] + Ryan C. Gordon [reserved] [reserved] + DO NOT ADD YOUR NAME HERE + + Jacko Dirks + + To add your name to the credits, pick a random blank space in the middle and fill it. + 80% of merge conflicts on stb PRs are due to people adding their name at the end + of the credits. +*/ + +#ifndef STBI_INCLUDE_STB_IMAGE_H +#define STBI_INCLUDE_STB_IMAGE_H + +// DOCUMENTATION +// +// Limitations: +// - no 12-bit-per-channel JPEG +// - no JPEGs with arithmetic coding +// - GIF always returns *comp=4 +// +// Basic usage (see HDR discussion below for HDR usage): +// int x,y,n; +// unsigned char *data = stbi_load(filename, &x, &y, &n, 0); +// // ... process data if not NULL ... +// // ... x = width, y = height, n = # 8-bit components per pixel ... +// // ... replace '0' with '1'..'4' to force that many components per pixel +// // ... but 'n' will always be the number that it would have been if you said 0 +// stbi_image_free(data); +// +// Standard parameters: +// int *x -- outputs image width in pixels +// int *y -- outputs image height in pixels +// int *channels_in_file -- outputs # of image components in image file +// int desired_channels -- if non-zero, # of image components requested in result +// +// The return value from an image loader is an 'unsigned char *' which points +// to the pixel data, or NULL on an allocation failure or if the image is +// corrupt or invalid. The pixel data consists of *y scanlines of *x pixels, +// with each pixel consisting of N interleaved 8-bit components; the first +// pixel pointed to is top-left-most in the image. There is no padding between +// image scanlines or between pixels, regardless of format. The number of +// components N is 'desired_channels' if desired_channels is non-zero, or +// *channels_in_file otherwise. If desired_channels is non-zero, +// *channels_in_file has the number of components that _would_ have been +// output otherwise. E.g. if you set desired_channels to 4, you will always +// get RGBA output, but you can check *channels_in_file to see if it's trivially +// opaque because e.g. there were only 3 channels in the source image. +// +// An output image with N components has the following components interleaved +// in this order in each pixel: +// +// N=#comp components +// 1 grey +// 2 grey, alpha +// 3 red, green, blue +// 4 red, green, blue, alpha +// +// If image loading fails for any reason, the return value will be NULL, +// and *x, *y, *channels_in_file will be unchanged. The function +// stbi_failure_reason() can be queried for an extremely brief, end-user +// unfriendly explanation of why the load failed. Define STBI_NO_FAILURE_STRINGS +// to avoid compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly +// more user-friendly ones. +// +// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. +// +// To query the width, height and component count of an image without having to +// decode the full file, you can use the stbi_info family of functions: +// +// int x,y,n,ok; +// ok = stbi_info(filename, &x, &y, &n); +// // returns ok=1 and sets x, y, n if image is a supported format, +// // 0 otherwise. +// +// Note that stb_image pervasively uses ints in its public API for sizes, +// including sizes of memory buffers. This is now part of the API and thus +// hard to change without causing breakage. As a result, the various image +// loaders all have certain limits on image size; these differ somewhat +// by format but generally boil down to either just under 2GB or just under +// 1GB. When the decoded image would be larger than this, stb_image decoding +// will fail. +// +// Additionally, stb_image will reject image files that have any of their +// dimensions set to a larger value than the configurable STBI_MAX_DIMENSIONS, +// which defaults to 2**24 = 16777216 pixels. Due to the above memory limit, +// the only way to have an image with such dimensions load correctly +// is for it to have a rather extreme aspect ratio. Either way, the +// assumption here is that such larger images are likely to be malformed +// or malicious. If you do need to load an image with individual dimensions +// larger than that, and it still fits in the overall size limit, you can +// #define STBI_MAX_DIMENSIONS on your own to be something larger. +// +// =========================================================================== +// +// UNICODE: +// +// If compiling for Windows and you wish to use Unicode filenames, compile +// with +// #define STBI_WINDOWS_UTF8 +// and pass utf8-encoded filenames. Call stbi_convert_wchar_to_utf8 to convert +// Windows wchar_t filenames to utf8. +// +// =========================================================================== +// +// Philosophy +// +// stb libraries are designed with the following priorities: +// +// 1. easy to use +// 2. easy to maintain +// 3. good performance +// +// Sometimes I let "good performance" creep up in priority over "easy to maintain", +// and for best performance I may provide less-easy-to-use APIs that give higher +// performance, in addition to the easy-to-use ones. Nevertheless, it's important +// to keep in mind that from the standpoint of you, a client of this library, +// all you care about is #1 and #3, and stb libraries DO NOT emphasize #3 above all. +// +// Some secondary priorities arise directly from the first two, some of which +// provide more explicit reasons why performance can't be emphasized. +// +// - Portable ("ease of use") +// - Small source code footprint ("easy to maintain") +// - No dependencies ("ease of use") +// +// =========================================================================== +// +// I/O callbacks +// +// I/O callbacks allow you to read from arbitrary sources, like packaged +// files or some other source. Data read from callbacks are processed +// through a small internal buffer (currently 128 bytes) to try to reduce +// overhead. +// +// The three functions you must define are "read" (reads some bytes of data), +// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). +// +// =========================================================================== +// +// SIMD support +// +// The JPEG decoder will try to automatically use SIMD kernels on x86 when +// supported by the compiler. For ARM Neon support, you must explicitly +// request it. +// +// (The old do-it-yourself SIMD API is no longer supported in the current +// code.) +// +// On x86, SSE2 will automatically be used when available based on a run-time +// test; if not, the generic C versions are used as a fall-back. On ARM targets, +// the typical path is to have separate builds for NEON and non-NEON devices +// (at least this is true for iOS and Android). Therefore, the NEON support is +// toggled by a build flag: define STBI_NEON to get NEON loops. +// +// If for some reason you do not want to use any of SIMD code, or if +// you have issues compiling it, you can disable it entirely by +// defining STBI_NO_SIMD. +// +// =========================================================================== +// +// HDR image support (disable by defining STBI_NO_HDR) +// +// stb_image supports loading HDR images in general, and currently the Radiance +// .HDR file format specifically. You can still load any file through the existing +// interface; if you attempt to load an HDR file, it will be automatically remapped +// to LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; +// both of these constants can be reconfigured through this interface: +// +// stbi_hdr_to_ldr_gamma(2.2f); +// stbi_hdr_to_ldr_scale(1.0f); +// +// (note, do not use _inverse_ constants; stbi_image will invert them +// appropriately). +// +// Additionally, there is a new, parallel interface for loading files as +// (linear) floats to preserve the full dynamic range: +// +// float *data = stbi_loadf(filename, &x, &y, &n, 0); +// +// If you load LDR images through this interface, those images will +// be promoted to floating point values, run through the inverse of +// constants corresponding to the above: +// +// stbi_ldr_to_hdr_scale(1.0f); +// stbi_ldr_to_hdr_gamma(2.2f); +// +// Finally, given a filename (or an open file or memory block--see header +// file for details) containing image data, you can query for the "most +// appropriate" interface to use (that is, whether the image is HDR or +// not), using: +// +// stbi_is_hdr(char *filename); +// +// =========================================================================== +// +// iPhone PNG support: +// +// We optionally support converting iPhone-formatted PNGs (which store +// premultiplied BGRA) back to RGB, even though they're internally encoded +// differently. To enable this conversion, call +// stbi_convert_iphone_png_to_rgb(1). +// +// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per +// pixel to remove any premultiplied alpha *only* if the image file explicitly +// says there's premultiplied data (currently only happens in iPhone images, +// and only if iPhone convert-to-rgb processing is on). +// +// =========================================================================== +// +// ADDITIONAL CONFIGURATION +// +// - You can suppress implementation of any of the decoders to reduce +// your code footprint by #defining one or more of the following +// symbols before creating the implementation. +// +// STBI_NO_JPEG +// STBI_NO_PNG +// STBI_NO_BMP +// STBI_NO_PSD +// STBI_NO_TGA +// STBI_NO_GIF +// STBI_NO_HDR +// STBI_NO_PIC +// STBI_NO_PNM (.ppm and .pgm) +// +// - You can request *only* certain decoders and suppress all other ones +// (this will be more forward-compatible, as addition of new decoders +// doesn't require you to disable them explicitly): +// +// STBI_ONLY_JPEG +// STBI_ONLY_PNG +// STBI_ONLY_BMP +// STBI_ONLY_PSD +// STBI_ONLY_TGA +// STBI_ONLY_GIF +// STBI_ONLY_HDR +// STBI_ONLY_PIC +// STBI_ONLY_PNM (.ppm and .pgm) +// +// - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still +// want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB +// +// - If you define STBI_MAX_DIMENSIONS, stb_image will reject images greater +// than that size (in either width or height) without further processing. +// This is to let programs in the wild set an upper bound to prevent +// denial-of-service attacks on untrusted data, as one could generate a +// valid image of gigantic dimensions and force stb_image to allocate a +// huge block of memory and spend disproportionate time decoding it. By +// default this is set to (1 << 24), which is 16777216, but that's still +// very big. + +#ifndef STBI_NO_STDIO + +#include + +#endif // STBI_NO_STDIO + +#define STBI_VERSION 1 + +enum { + STBI_default = 0, // only used for desired_channels + + STBI_grey = 1, + STBI_grey_alpha = 2, + STBI_rgb = 3, + STBI_rgb_alpha = 4 +}; + +#include + +typedef unsigned char stbi_uc; +typedef unsigned short stbi_us; + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef STBIDEF +#ifdef STB_IMAGE_STATIC +#define STBIDEF static +#else +#define STBIDEF extern +#endif +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// PRIMARY API - works on images of any type +// + +// +// load image by filename, open file, or memory buffer +// + +typedef struct { + int + (*read)(void *user, char *data, int size); // fill 'data' with 'size' bytes. return number of bytes actually read + void + (*skip)(void *user, int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative + int (*eof)(void *user); // returns nonzero if we are at end of file/data +} stbi_io_callbacks; + +//////////////////////////////////// +// +// 8-bits-per-channel interface +// + +STBIDEF stbi_uc * +stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc * +stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, + int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +// for stbi_load_from_file, file pointer is left pointing immediately after image +#endif + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc * +stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, + int req_comp); +#endif + +#ifdef STBI_WINDOWS_UTF8 +STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input); +#endif + +//////////////////////////////////// +// +// 16-bits-per-channel interface +// + +STBIDEF stbi_us * +stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us * +stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, + int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_from_file_16(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +#endif + +//////////////////////////////////// +// +// float-per-channel interface +// +#ifndef STBI_NO_LINEAR +STBIDEF float * +stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF float * +stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, + int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +#endif +#endif + +#ifndef STBI_NO_HDR +STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); +STBIDEF void stbi_hdr_to_ldr_scale(float scale); +#endif // STBI_NO_HDR + +#ifndef STBI_NO_LINEAR +STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); +STBIDEF void stbi_ldr_to_hdr_scale(float scale); +#endif // STBI_NO_LINEAR + +// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr(char const *filename); +STBIDEF int stbi_is_hdr_from_file(FILE *f); +#endif // STBI_NO_STDIO + + +// get a VERY brief reason for failure +// on most compilers (and ALL modern mainstream compilers) this is threadsafe +STBIDEF const char *stbi_failure_reason(void); + +// free the loaded image -- this is just free() +STBIDEF void stbi_image_free(void *retval_from_stbi_load); + +// get image dimensions & components without fully decoding +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len); +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *clbk, void *user); + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit(char const *filename); +STBIDEF int stbi_is_16_bit_from_file(FILE *f); +#endif + + + +// for image formats that explicitly notate that they have premultiplied alpha, +// we just return the colors as stored in the file. set this flag to force +// unpremultiplication. results are undefined if the unpremultiply overflow. +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); + +// indicate whether we should process iphone images back to canonical format, +// or just pass them through "as-is" +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); + +// flip the image vertically, so the first pixel in the output array is the bottom left +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); + +// as above, but only applies to images loaded on the thread that calls the function +// this function is only available if your compiler supports thread-local variables; +// calling it will fail to link if your compiler doesn't +STBIDEF void stbi_set_unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply); +STBIDEF void stbi_convert_iphone_png_to_rgb_thread(int flag_true_if_should_convert); +STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip); + +// ZLIB client - used by PNG, available for other purposes + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, + int parse_header); +STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + +STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + +#ifdef __cplusplus +} +#endif + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBI_INCLUDE_STB_IMAGE_H + +#ifdef STB_IMAGE_IMPLEMENTATION + +#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ + || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ + || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ + || defined(STBI_ONLY_ZLIB) +#ifndef STBI_ONLY_JPEG +#define STBI_NO_JPEG +#endif +#ifndef STBI_ONLY_PNG +#define STBI_NO_PNG +#endif +#ifndef STBI_ONLY_BMP +#define STBI_NO_BMP +#endif +#ifndef STBI_ONLY_PSD +#define STBI_NO_PSD +#endif +#ifndef STBI_ONLY_TGA +#define STBI_NO_TGA +#endif +#ifndef STBI_ONLY_GIF +#define STBI_NO_GIF +#endif +#ifndef STBI_ONLY_HDR +#define STBI_NO_HDR +#endif +#ifndef STBI_ONLY_PIC +#define STBI_NO_PIC +#endif +#ifndef STBI_ONLY_PNM +#define STBI_NO_PNM +#endif +#endif + +#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) +#define STBI_NO_ZLIB +#endif + + +#include +#include // ptrdiff_t on osx +#include +#include +#include + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) + +#include // ldexp, pow + +#endif + +#ifndef STBI_NO_STDIO + +#include + +#endif + +#ifndef STBI_ASSERT + +#include + +#define STBI_ASSERT(x) assert(x) +#endif + +#ifdef __cplusplus +#define STBI_EXTERN extern "C" +#else +#define STBI_EXTERN extern +#endif + + +#ifndef _MSC_VER +#ifdef __cplusplus +#define stbi_inline inline +#else +#define stbi_inline +#endif +#else +#define stbi_inline __forceinline +#endif + +#ifndef STBI_NO_THREAD_LOCALS +#if defined(__cplusplus) && __cplusplus >= 201103L +#define STBI_THREAD_LOCAL thread_local +#elif defined(__GNUC__) && __GNUC__ < 5 +#define STBI_THREAD_LOCAL __thread +#elif defined(_MSC_VER) +#define STBI_THREAD_LOCAL __declspec(thread) +#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_THREADS__) +#define STBI_THREAD_LOCAL _Thread_local +#endif + +#ifndef STBI_THREAD_LOCAL +#if defined(__GNUC__) +#define STBI_THREAD_LOCAL __thread +#endif +#endif +#endif + +#if defined(_MSC_VER) || defined(__SYMBIAN32__) +typedef unsigned short stbi__uint16; +typedef signed short stbi__int16; +typedef unsigned int stbi__uint32; +typedef signed int stbi__int32; +#else + +#include + +typedef uint16_t stbi__uint16; +typedef int16_t stbi__int16; +typedef uint32_t stbi__uint32; +typedef int32_t stbi__int32; +#endif + +// should produce compiler error if size is wrong +typedef unsigned char validate_uint32[sizeof(stbi__uint32) == 4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBI_NOTUSED(v) (void)(v) +#else +#define STBI_NOTUSED(v) (void)sizeof(v) +#endif + +#ifdef _MSC_VER +#define STBI_HAS_LROTL +#endif + +#ifdef STBI_HAS_LROTL +#define stbi_lrot(x,y) _lrotl(x,y) +#else +#define stbi_lrot(x, y) (((x) << (y)) | ((x) >> (-(y) & 31))) +#endif + +#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) +// ok +#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) +// ok +#else +#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." +#endif + +#ifndef STBI_MALLOC +#define STBI_MALLOC(sz) malloc(sz) +#define STBI_REALLOC(p, newsz) realloc(p,newsz) +#define STBI_FREE(p) free(p) +#endif + +#ifndef STBI_REALLOC_SIZED +#define STBI_REALLOC_SIZED(p, oldsz, newsz) STBI_REALLOC(p,newsz) +#endif + +// x86/x64 detection +#if defined(__x86_64__) || defined(_M_X64) +#define STBI__X64_TARGET +#elif defined(__i386) || defined(_M_IX86) +#define STBI__X86_TARGET +#endif + +#if defined(__GNUC__) && defined(STBI__X86_TARGET) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) +// gcc doesn't support sse2 intrinsics unless you compile with -msse2, +// which in turn means it gets to use SSE2 everywhere. This is unfortunate, +// but previous attempts to provide the SSE2 functions with runtime +// detection caused numerous issues. The way architecture extensions are +// exposed in GCC/Clang is, sadly, not really suited for one-file libs. +// New behavior: if compiled with -msse2, we use SSE2 without any +// detection; if not, we don't use it at all. +#define STBI_NO_SIMD +#endif + +#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) +// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET +// +// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the +// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. +// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not +// simultaneously enabling "-mstackrealign". +// +// See https://github.com/nothings/stb/issues/81 for more information. +// +// So default to no SSE2 on 32-bit MinGW. If you've read this far and added +// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. +#define STBI_NO_SIMD +#endif + +#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) +#define STBI_SSE2 + +#include + +#ifdef _MSC_VER + +#if _MSC_VER >= 1400 // not VC6 +#include // __cpuid +static int stbi__cpuid3(void) +{ + int info[4]; + __cpuid(info,1); + return info[3]; +} +#else +static int stbi__cpuid3(void) +{ + int res; + __asm { + mov eax,1 + cpuid + mov res,edx + } + return res; +} +#endif + +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name + +#if !defined(STBI_NO_JPEG) && defined(STBI_SSE2) +static int stbi__sse2_available(void) +{ + int info3 = stbi__cpuid3(); + return ((info3 >> 26) & 1) != 0; +} +#endif + +#else // assume GCC-style if not VC++ +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) + +#if !defined(STBI_NO_JPEG) && defined(STBI_SSE2) +static int stbi__sse2_available(void) +{ + // If we're even attempting to compile this on GCC/Clang, that means + // -msse2 is on, which means the compiler is allowed to use SSE2 + // instructions at will, and so are we. + return 1; +} +#endif + +#endif +#endif + +// ARM NEON +#if defined(STBI_NO_SIMD) && defined(STBI_NEON) +#undef STBI_NEON +#endif + +#ifdef STBI_NEON +#include +#ifdef _MSC_VER +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name +#else +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) +#endif +#endif + +#ifndef STBI_SIMD_ALIGN +#define STBI_SIMD_ALIGN(type, name) type name +#endif + +#ifndef STBI_MAX_DIMENSIONS +#define STBI_MAX_DIMENSIONS (1 << 24) +#endif + +/////////////////////////////////////////////// +// +// stbi__context struct and start_xxx functions + +// stbi__context structure is our basic context used by all images, so it +// contains all the IO context, plus some basic image information +typedef struct { + stbi__uint32 img_x, img_y; + int img_n, img_out_n; + + stbi_io_callbacks io; + void *io_user_data; + + int read_from_callbacks; + int buflen; + stbi_uc buffer_start[128]; + int callback_already_read; + + stbi_uc *img_buffer, *img_buffer_end; + stbi_uc *img_buffer_original, *img_buffer_original_end; +} stbi__context; + + +static void stbi__refill_buffer(stbi__context *s); + +// initialize a memory-decode context +static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) { + s->io.read = NULL; + s->read_from_callbacks = 0; + s->callback_already_read = 0; + s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; + s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer + len; +} + +// initialize a callback-based context +static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) { + s->io = *c; + s->io_user_data = user; + s->buflen = sizeof(s->buffer_start); + s->read_from_callbacks = 1; + s->callback_already_read = 0; + s->img_buffer = s->img_buffer_original = s->buffer_start; + stbi__refill_buffer(s); + s->img_buffer_original_end = s->img_buffer_end; +} + +#ifndef STBI_NO_STDIO + +static int stbi__stdio_read(void *user, char *data, int size) { + return (int) fread(data, 1, static_cast(size), (FILE *) user); +} + +static void stbi__stdio_skip(void *user, int n) { + int ch; + fseek((FILE *) user, n, SEEK_CUR); + ch = fgetc((FILE *) user); /* have to read a byte to reset feof()'s flag */ + if (ch != EOF) { + ungetc(ch, (FILE *) user); /* push byte back onto stream if valid. */ + } +} + +static int stbi__stdio_eof(void *user) { + return feof((FILE *) user) || ferror((FILE *) user); +} + +static stbi_io_callbacks stbi__stdio_callbacks = + { + stbi__stdio_read, + stbi__stdio_skip, + stbi__stdio_eof, + }; + +static void stbi__start_file(stbi__context *s, FILE *f) { + stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); +} + +//static void stop_file(stbi__context *s) { } + +#endif // !STBI_NO_STDIO + +static void stbi__rewind(stbi__context *s) { + // conceptually rewind SHOULD rewind to the beginning of the stream, + // but we just rewind to the beginning of the initial buffer, because + // we only use it after doing 'test', which only ever looks at at most 92 bytes + s->img_buffer = s->img_buffer_original; + s->img_buffer_end = s->img_buffer_original_end; +} + +enum { + STBI_ORDER_RGB, + STBI_ORDER_BGR +}; + +typedef struct { + int bits_per_channel; + int num_channels; + int channel_order; +} stbi__result_info; + +#ifndef STBI_NO_JPEG +static int stbi__jpeg_test(stbi__context *s); +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNG + +static int stbi__png_test(stbi__context *s); + +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); + +static int stbi__png_is16(stbi__context *s); + +#endif + +#ifndef STBI_NO_BMP +static int stbi__bmp_test(stbi__context *s); +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_TGA +static int stbi__tga_test(stbi__context *s); +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s); +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc); +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__psd_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_HDR +static int stbi__hdr_test(stbi__context *s); +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_test(stbi__context *s); +static void *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_GIF +static int stbi__gif_test(stbi__context *s); +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNM +static int stbi__pnm_test(stbi__context *s); +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__pnm_is16(stbi__context *s); +#endif + +static +#ifdef STBI_THREAD_LOCAL +STBI_THREAD_LOCAL +#endif +const char *stbi__g_failure_reason; + +STBIDEF const char *stbi_failure_reason(void) { + return stbi__g_failure_reason; +} + +#ifndef STBI_NO_FAILURE_STRINGS + +static int stbi__err(const char *str) { + stbi__g_failure_reason = str; + return 0; +} + +#endif + +static void *stbi__malloc(size_t size) { + return STBI_MALLOC(size); +} + +// stb_image uses ints pervasively, including for offset calculations. +// therefore the largest decoded image size we can support with the +// current code, even on 64-bit targets, is INT_MAX. this is not a +// significant limitation for the intended use case. +// +// we do, however, need to make sure our size calculations don't +// overflow. hence a few helper functions for size calculations that +// multiply integers together, making sure that they're non-negative +// and no overflow occurs. + +// return 1 if the sum is valid, 0 on overflow. +// negative terms are considered invalid. +static int stbi__addsizes_valid(int a, int b) { + if (b < 0) return 0; + // now 0 <= b <= INT_MAX, hence also + // 0 <= INT_MAX - b <= INTMAX. + // And "a + b <= INT_MAX" (which might overflow) is the + // same as a <= INT_MAX - b (no overflow) + return a <= INT_MAX - b; +} + +// returns 1 if the product is valid, 0 on overflow. +// negative factors are considered invalid. +static int stbi__mul2sizes_valid(int a, int b) { + if (a < 0 || b < 0) return 0; + if (b == 0) return 1; // mul-by-0 is always safe + // portable way to check for no overflows in a*b + return a <= INT_MAX / b; +} + +#if !defined(STBI_NO_JPEG) || !defined(STBI_NO_PNG) || !defined(STBI_NO_TGA) || !defined(STBI_NO_HDR) + +// returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow +static int stbi__mad2sizes_valid(int a, int b, int add) { + return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a * b, add); +} + +#endif + +// returns 1 if "a*b*c + add" has no negative terms/factors and doesn't overflow +static int stbi__mad3sizes_valid(int a, int b, int c, int add) { + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a * b, c) && + stbi__addsizes_valid(a * b * c, add); +} + +// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) || !defined(STBI_NO_PNM) + +static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add) { + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a * b, c) && + stbi__mul2sizes_valid(a * b * c, d) && stbi__addsizes_valid(a * b * c * d, add); +} + +#endif + +#if !defined(STBI_NO_JPEG) || !defined(STBI_NO_PNG) || !defined(STBI_NO_TGA) || !defined(STBI_NO_HDR) + +// mallocs with size overflow checking +static void *stbi__malloc_mad2(int a, int b, int add) { + if (!stbi__mad2sizes_valid(a, b, add)) return NULL; + return stbi__malloc(a * b + add); +} + +#endif + +static void *stbi__malloc_mad3(int a, int b, int c, int add) { + if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; + return stbi__malloc(a * b * c + add); +} + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) || !defined(STBI_NO_PNM) + +static void *stbi__malloc_mad4(int a, int b, int c, int d, int add) { + if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL; + return stbi__malloc(a * b * c * d + add); +} + +#endif + +#if 0 +// returns 1 if the sum of two signed ints is valid (between -2^31 and 2^31-1 inclusive), 0 on overflow. +static int stbi__addints_valid(int a, int b) { + if ((a >= 0) != (b >= 0)) return 1; // a and b have different signs, so no overflow + if (a < 0 && b < 0) return a >= INT_MIN - b; // same as a + b >= INT_MIN; INT_MIN - b cannot overflow since b < 0. + return a <= INT_MAX - b; +} + +// returns 1 if the product of two ints fits in a signed short, 0 on overflow. +static int stbi__mul2shorts_valid(int a, int b) { + if (b == 0 || b == -1) return 1; // multiplication by 0 is always 0; check for -1 so SHRT_MIN/b doesn't overflow + if ((a >= 0) == (b >= 0)) return a <= SHRT_MAX / b; // product is positive, so similar to mul2sizes_valid + if (b < 0) return a <= SHRT_MIN / b; // same as a * b >= SHRT_MIN + return a >= SHRT_MIN / b; +} +#endif + +// stbi__err - error +// stbi__errpf - error returning pointer to float +// stbi__errpuc - error returning pointer to unsigned char + +#ifdef STBI_NO_FAILURE_STRINGS +#define stbi__err(x,y) 0 +#elif defined(STBI_FAILURE_USERMSG) +#define stbi__err(x,y) stbi__err(y) +#else +#define stbi__err(x, y) stbi__err(x) +#endif + +#define stbi__errpf(x, y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) +#define stbi__errpuc(x, y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) + +STBIDEF void stbi_image_free(void *retval_from_stbi_load) { + STBI_FREE(retval_from_stbi_load); +} + +#ifndef STBI_NO_LINEAR + +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); + +#endif + +#ifndef STBI_NO_HDR +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); +#endif + +static int stbi__vertically_flip_on_load_global = 0; + +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) { + stbi__vertically_flip_on_load_global = flag_true_if_should_flip; +} + +#ifndef STBI_THREAD_LOCAL +#define stbi__vertically_flip_on_load stbi__vertically_flip_on_load_global +#else +static STBI_THREAD_LOCAL int stbi__vertically_flip_on_load_local, stbi__vertically_flip_on_load_set; + +STBIDEF void stbi_set_flip_vertically_on_load_thread(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load_local = flag_true_if_should_flip; + stbi__vertically_flip_on_load_set = 1; +} + +#define stbi__vertically_flip_on_load (stbi__vertically_flip_on_load_set \ + ? stbi__vertically_flip_on_load_local \ + : stbi__vertically_flip_on_load_global) +#endif // STBI_THREAD_LOCAL + +static void * +stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) { + memset(ri, 0, sizeof(*ri)); // make sure it's initialized if we add new fields + ri->bits_per_channel = 8; // default is 8 so most paths don't have to be changed + ri->channel_order = STBI_ORDER_RGB; // all current input & output are this, but this is here so we can add BGR order + ri->num_channels = 0; + + // test the formats with a very explicit header first (at least a FOURCC + // or distinctive magic number first) +#ifndef STBI_NO_PNG + if (stbi__png_test(s)) return stbi__png_load(s, x, y, comp, req_comp, ri); +#endif +#ifndef STBI_NO_BMP + if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp, ri); +#endif +#ifndef STBI_NO_GIF + if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp, ri); +#endif +#ifndef STBI_NO_PSD + if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp, ri, bpc); +#else + STBI_NOTUSED(bpc); +#endif +#ifndef STBI_NO_PIC + if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp, ri); +#endif + + // then the formats that can end up attempting to load with just 1 or 2 + // bytes matching expectations; these are prone to false positives, so + // try them later +#ifndef STBI_NO_JPEG + if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp, ri); +#endif +#ifndef STBI_NO_PNM + if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp, ri); +#endif + +#ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr = stbi__hdr_load(s, x,y,comp,req_comp, ri); + return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); + } +#endif + +#ifndef STBI_NO_TGA + // test tga last because it's a crappy test! + if (stbi__tga_test(s)) + return stbi__tga_load(s,x,y,comp,req_comp, ri); +#endif + + return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); +} + +static stbi_uc *stbi__convert_16_to_8(stbi__uint16 *orig, int w, int h, int channels) { + int i; + int img_len = w * h * channels; + stbi_uc *reduced; + + reduced = (stbi_uc *) stbi__malloc(img_len); + if (reduced == NULL) return stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + reduced[i] = (stbi_uc) ((orig[i] >> 8) & + 0xFF); // top half of each byte is sufficient approx of 16->8 bit scaling + + STBI_FREE(orig); + return reduced; +} + +static stbi__uint16 *stbi__convert_8_to_16(stbi_uc *orig, int w, int h, int channels) { + int i; + int img_len = w * h * channels; + stbi__uint16 *enlarged; + + enlarged = (stbi__uint16 *) stbi__malloc(img_len * 2); + if (enlarged == NULL) return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + enlarged[i] = (stbi__uint16) ((orig[i] << 8) + + orig[i]); // replicate to high and low byte, maps 0->0, 255->0xffff + + STBI_FREE(orig); + return enlarged; +} + +static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) { + int row; + size_t bytes_per_row = (size_t) w * bytes_per_pixel; + stbi_uc temp[2048]; + stbi_uc *bytes = (stbi_uc *) image; + + for (row = 0; row < (h >> 1); row++) { + stbi_uc *row0 = bytes + row * bytes_per_row; + stbi_uc *row1 = bytes + (h - row - 1) * bytes_per_row; + // swap row0 with row1 + size_t bytes_left = bytes_per_row; + while (bytes_left) { + size_t bytes_copy = (bytes_left < sizeof(temp)) ? bytes_left : sizeof(temp); + memcpy(temp, row0, bytes_copy); + memcpy(row0, row1, bytes_copy); + memcpy(row1, temp, bytes_copy); + row0 += bytes_copy; + row1 += bytes_copy; + bytes_left -= bytes_copy; + } + } +} + +#ifndef STBI_NO_GIF +static void stbi__vertical_flip_slices(void *image, int w, int h, int z, int bytes_per_pixel) +{ + int slice; + int slice_size = w * h * bytes_per_pixel; + + stbi_uc *bytes = (stbi_uc *)image; + for (slice = 0; slice < z; ++slice) { + stbi__vertical_flip(bytes, w, h, bytes_per_pixel); + bytes += slice_size; + } +} +#endif + +static unsigned char *stbi__load_and_postprocess_8bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) { + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 8); + + if (result == NULL) + return NULL; + + // it is the responsibility of the loaders to make sure we get either 8 or 16 bit. + STBI_ASSERT(ri.bits_per_channel == 8 || ri.bits_per_channel == 16); + + if (ri.bits_per_channel != 8) { + result = stbi__convert_16_to_8((stbi__uint16 *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 8; + } + + // @TODO: move stbi__convert_format to here + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi_uc)); + } + + return (unsigned char *) result; +} + +static stbi__uint16 *stbi__load_and_postprocess_16bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) { + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 16); + + if (result == NULL) + return NULL; + + // it is the responsibility of the loaders to make sure we get either 8 or 16 bit. + STBI_ASSERT(ri.bits_per_channel == 8 || ri.bits_per_channel == 16); + + if (ri.bits_per_channel != 16) { + result = stbi__convert_8_to_16((stbi_uc *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 16; + } + + // @TODO: move stbi__convert_format16 to here + // @TODO: special case RGB-to-Y (and RGBA-to-YA) for 8-bit-to-16-bit case to keep more precision + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi__uint16)); + } + + return (stbi__uint16 *) result; +} + +#if !defined(STBI_NO_HDR) && !defined(STBI_NO_LINEAR) +static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) +{ + if (stbi__vertically_flip_on_load && result != NULL) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(float)); + } +} +#endif + +#ifndef STBI_NO_STDIO + +#if defined(_WIN32) && defined(STBI_WINDOWS_UTF8) +STBI_EXTERN __declspec(dllimport) int __stdcall MultiByteToWideChar(unsigned int cp, unsigned long flags, const char *str, int cbmb, wchar_t *widestr, int cchwide); +STBI_EXTERN __declspec(dllimport) int __stdcall WideCharToMultiByte(unsigned int cp, unsigned long flags, const wchar_t *widestr, int cchwide, char *str, int cbmb, const char *defchar, int *used_default); +#endif + +#if defined(_WIN32) && defined(STBI_WINDOWS_UTF8) +STBIDEF int stbi_convert_wchar_to_utf8(char *buffer, size_t bufferlen, const wchar_t* input) +{ + return WideCharToMultiByte(65001 /* UTF8 */, 0, input, -1, buffer, (int) bufferlen, NULL, NULL); +} +#endif + +static FILE *stbi__fopen(char const *filename, char const *mode) { + FILE *f; +#if defined(_WIN32) && defined(STBI_WINDOWS_UTF8) + wchar_t wMode[64]; + wchar_t wFilename[1024]; + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, filename, -1, wFilename, sizeof(wFilename)/sizeof(*wFilename))) + return 0; + + if (0 == MultiByteToWideChar(65001 /* UTF8 */, 0, mode, -1, wMode, sizeof(wMode)/sizeof(*wMode))) + return 0; + +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != _wfopen_s(&f, wFilename, wMode)) + f = 0; +#else + f = _wfopen(wFilename, wMode); +#endif + +#elif defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + + +STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) { + FILE *f = stbi__fopen(filename, "rb"); + unsigned char *result; + if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file(f, x, y, comp, req_comp); + fclose(f); + return result; +} + +STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) { + unsigned char *result; + stbi__context s; + stbi__start_file(&s, f); + result = stbi__load_and_postprocess_8bit(&s, x, y, comp, req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, -(int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi__uint16 *stbi_load_from_file_16(FILE *f, int *x, int *y, int *comp, int req_comp) { + stbi__uint16 *result; + stbi__context s; + stbi__start_file(&s, f); + result = stbi__load_and_postprocess_16bit(&s, x, y, comp, req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, -(int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *comp, int req_comp) { + FILE *f = stbi__fopen(filename, "rb"); + stbi__uint16 *result; + if (!f) return (stbi_us *) stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file_16(f, x, y, comp, req_comp); + fclose(f); + return result; +} + + +#endif //!STBI_NO_STDIO + +STBIDEF stbi_us * +stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels) { + stbi__context s; + stbi__start_mem(&s, buffer, len); + return stbi__load_and_postprocess_16bit(&s, x, y, channels_in_file, desired_channels); +} + +STBIDEF stbi_us * +stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, + int desired_channels) { + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__load_and_postprocess_16bit(&s, x, y, channels_in_file, desired_channels); +} + +STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) { + stbi__context s; + stbi__start_mem(&s, buffer, len); + return stbi__load_and_postprocess_8bit(&s, x, y, comp, req_comp); +} + +STBIDEF stbi_uc * +stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) { + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__load_and_postprocess_8bit(&s, x, y, comp, req_comp); +} + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_mem(&s,buffer,len); + + result = (unsigned char*) stbi__load_gif_main(&s, delays, x, y, z, comp, req_comp); + if (stbi__vertically_flip_on_load) { + stbi__vertical_flip_slices( result, *x, *y, *z, *comp ); + } + + return result; +} +#endif + +#ifndef STBI_NO_LINEAR + +static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) { + unsigned char *data; +#ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + stbi__result_info ri; + float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp, &ri); + if (hdr_data) + stbi__float_postprocess(hdr_data,x,y,comp,req_comp); + return hdr_data; + } +#endif + data = stbi__load_and_postprocess_8bit(s, x, y, comp, req_comp); + if (data) + return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); + return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); +} + +STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) { + stbi__context s; + stbi__start_mem(&s, buffer, len); + return stbi__loadf_main(&s, x, y, comp, req_comp); +} + +STBIDEF float * +stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) { + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__loadf_main(&s, x, y, comp, req_comp); +} + +#ifndef STBI_NO_STDIO + +STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) { + float *result; + FILE *f = stbi__fopen(filename, "rb"); + if (!f) return stbi__errpf("can't fopen", "Unable to open file"); + result = stbi_loadf_from_file(f, x, y, comp, req_comp); + fclose(f); + return result; +} + +STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) { + stbi__context s; + stbi__start_file(&s, f); + return stbi__loadf_main(&s, x, y, comp, req_comp); +} + +#endif // !STBI_NO_STDIO + +#endif // !STBI_NO_LINEAR + +// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is +// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always +// reports false! + +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) { +#ifndef STBI_NO_HDR + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__hdr_test(&s); +#else + STBI_NOTUSED(buffer); + STBI_NOTUSED(len); + return 0; +#endif +} + +#ifndef STBI_NO_STDIO + +STBIDEF int stbi_is_hdr(char const *filename) { + FILE *f = stbi__fopen(filename, "rb"); + int result = 0; + if (f) { + result = stbi_is_hdr_from_file(f); + fclose(f); + } + return result; +} + +STBIDEF int stbi_is_hdr_from_file(FILE *f) { +#ifndef STBI_NO_HDR + long pos = ftell(f); + int res; + stbi__context s; + stbi__start_file(&s,f); + res = stbi__hdr_test(&s); + fseek(f, pos, SEEK_SET); + return res; +#else + STBI_NOTUSED(f); + return 0; +#endif +} + +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) { +#ifndef STBI_NO_HDR + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__hdr_test(&s); +#else + STBI_NOTUSED(clbk); + STBI_NOTUSED(user); + return 0; +#endif +} + +#ifndef STBI_NO_LINEAR +static float stbi__l2h_gamma = 2.2f, stbi__l2h_scale = 1.0f; + +STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } + +STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } + +#endif + +static float stbi__h2l_gamma_i = 1.0f / 2.2f, stbi__h2l_scale_i = 1.0f; + +STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1 / gamma; } + +STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1 / scale; } + + +////////////////////////////////////////////////////////////////////////////// +// +// Common code used by all image loaders +// + +enum { + STBI__SCAN_load = 0, + STBI__SCAN_type, + STBI__SCAN_header +}; + +static void stbi__refill_buffer(stbi__context *s) { + int n = (s->io.read)(s->io_user_data, (char *) s->buffer_start, s->buflen); + s->callback_already_read += (int) (s->img_buffer - s->img_buffer_original); + if (n == 0) { + // at end of file, treat same as if from memory, but need to handle case + // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file + s->read_from_callbacks = 0; + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + 1; + *s->img_buffer = 0; + } else { + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + n; + } +} + +stbi_inline static stbi_uc stbi__get8(stbi__context *s) { + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + if (s->read_from_callbacks) { + stbi__refill_buffer(s); + return *s->img_buffer++; + } + return 0; +} + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_HDR) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +stbi_inline static int stbi__at_eof(stbi__context *s) +{ + if (s->io.read) { + if (!(s->io.eof)(s->io_user_data)) return 0; + // if feof() is true, check if buffer = end + // special case: we've only got the special 0 character at the end + if (s->read_from_callbacks == 0) return 1; + } + + return s->img_buffer >= s->img_buffer_end; +} +#endif + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) +// nothing +#else + +static void stbi__skip(stbi__context *s, int n) { + if (n == 0) return; // already there! + if (n < 0) { + s->img_buffer = s->img_buffer_end; + return; + } + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + s->img_buffer = s->img_buffer_end; + (s->io.skip)(s->io_user_data, n - blen); + return; + } + } + s->img_buffer += n; +} + +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_TGA) && defined(STBI_NO_HDR) && defined(STBI_NO_PNM) +// nothing +#else + +static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) { + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + int res, count; + + memcpy(buffer, s->img_buffer, blen); + + count = (s->io.read)(s->io_user_data, (char *) buffer + blen, n - blen); + res = (count == (n - blen)); + s->img_buffer = s->img_buffer_end; + return res; + } + } + + if (s->img_buffer + n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} + +#endif + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PIC) +// nothing +#else + +static int stbi__get16be(stbi__context *s) { + int z = stbi__get8(s); + return (z << 8) + stbi__get8(s); +} + +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) && defined(STBI_NO_PIC) +// nothing +#else + +static stbi__uint32 stbi__get32be(stbi__context *s) { + stbi__uint32 z = stbi__get16be(s); + return (z << 16) + stbi__get16be(s); +} + +#endif + +#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) +// nothing +#else +static int stbi__get16le(stbi__context *s) +{ + int z = stbi__get8(s); + return z + (stbi__get8(s) << 8); +} +#endif + +#ifndef STBI_NO_BMP +static stbi__uint32 stbi__get32le(stbi__context *s) +{ + stbi__uint32 z = stbi__get16le(s); + z += (stbi__uint32)stbi__get16le(s) << 16; + return z; +} +#endif + +#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings + +#if defined(STBI_NO_JPEG) && defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else +////////////////////////////////////////////////////////////////////////////// +// +// generic converter from built-in img_n to req_comp +// individual types do this automatically as much as possible (e.g. jpeg +// does all cases internally since it needs to colorspace convert anyway, +// and it never has alpha, so very few cases ). png can automatically +// interleave an alpha=255 channel, but falls back to this for other cases +// +// assume data buffer is malloced, so malloc a new one and free that one +// only failure mode is malloc failing + +static stbi_uc stbi__compute_y(int r, int g, int b) { + return (stbi_uc) (((r * 77) + (g * 150) + (29 * b)) >> 8); +} + +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_BMP) && defined(STBI_NO_PSD) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) && defined(STBI_NO_PIC) && defined(STBI_NO_PNM) +// nothing +#else + +static unsigned char * +stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) { + int i, j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); + if (good == NULL) { + STBI_FREE(data); + return stbi__errpuc("outofmem", "Out of memory"); + } + + for (j = 0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n; + unsigned char *dest = good + j * x * req_comp; + +#define STBI__COMBO(a, b) ((a)*8+(b)) +#define STBI__CASE(a, b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1, 2) { + dest[0] = src[0]; + dest[1] = 255; + } + break; + STBI__CASE(1, 3) { dest[0] = dest[1] = dest[2] = src[0]; } + break; + STBI__CASE(1, 4) { + dest[0] = dest[1] = dest[2] = src[0]; + dest[3] = 255; + } + break; + STBI__CASE(2, 1) { dest[0] = src[0]; } + break; + STBI__CASE(2, 3) { dest[0] = dest[1] = dest[2] = src[0]; } + break; + STBI__CASE(2, 4) { + dest[0] = dest[1] = dest[2] = src[0]; + dest[3] = src[1]; + } + break; + STBI__CASE(3, 4) { + dest[0] = src[0]; + dest[1] = src[1]; + dest[2] = src[2]; + dest[3] = 255; + } + break; + STBI__CASE(3, 1) { dest[0] = stbi__compute_y(src[0], src[1], src[2]); } + break; + STBI__CASE(3, 2) { + dest[0] = stbi__compute_y(src[0], src[1], src[2]); + dest[1] = 255; + } + break; + STBI__CASE(4, 1) { dest[0] = stbi__compute_y(src[0], src[1], src[2]); } + break; + STBI__CASE(4, 2) { + dest[0] = stbi__compute_y(src[0], src[1], src[2]); + dest[1] = src[3]; + } + break; + STBI__CASE(4, 3) { + dest[0] = src[0]; + dest[1] = src[1]; + dest[2] = src[2]; + } + break; + default: + STBI_ASSERT(0); + STBI_FREE(data); + STBI_FREE(good); + return stbi__errpuc("unsupported", "Unsupported format conversion"); + } +#undef STBI__CASE + } + + STBI_FREE(data); + return good; +} + +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) +// nothing +#else + +static stbi__uint16 stbi__compute_y_16(int r, int g, int b) { + return (stbi__uint16) (((r * 77) + (g * 150) + (29 * b)) >> 8); +} + +#endif + +#if defined(STBI_NO_PNG) && defined(STBI_NO_PSD) +// nothing +#else + +static stbi__uint16 * +stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) { + int i, j; + stbi__uint16 *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); + if (good == NULL) { + STBI_FREE(data); + return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + } + + for (j = 0; j < (int) y; ++j) { + stbi__uint16 *src = data + j * x * img_n; + stbi__uint16 *dest = good + j * x * req_comp; + +#define STBI__COMBO(a, b) ((a)*8+(b)) +#define STBI__CASE(a, b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1, 2) { + dest[0] = src[0]; + dest[1] = 0xffff; + } + break; + STBI__CASE(1, 3) { dest[0] = dest[1] = dest[2] = src[0]; } + break; + STBI__CASE(1, 4) { + dest[0] = dest[1] = dest[2] = src[0]; + dest[3] = 0xffff; + } + break; + STBI__CASE(2, 1) { dest[0] = src[0]; } + break; + STBI__CASE(2, 3) { dest[0] = dest[1] = dest[2] = src[0]; } + break; + STBI__CASE(2, 4) { + dest[0] = dest[1] = dest[2] = src[0]; + dest[3] = src[1]; + } + break; + STBI__CASE(3, 4) { + dest[0] = src[0]; + dest[1] = src[1]; + dest[2] = src[2]; + dest[3] = 0xffff; + } + break; + STBI__CASE(3, 1) { dest[0] = stbi__compute_y_16(src[0], src[1], src[2]); } + break; + STBI__CASE(3, 2) { + dest[0] = stbi__compute_y_16(src[0], src[1], src[2]); + dest[1] = 0xffff; + } + break; + STBI__CASE(4, 1) { dest[0] = stbi__compute_y_16(src[0], src[1], src[2]); } + break; + STBI__CASE(4, 2) { + dest[0] = stbi__compute_y_16(src[0], src[1], src[2]); + dest[1] = src[3]; + } + break; + STBI__CASE(4, 3) { + dest[0] = src[0]; + dest[1] = src[1]; + dest[2] = src[2]; + } + break; + default: + STBI_ASSERT(0); + STBI_FREE(data); + STBI_FREE(good); + return (stbi__uint16 *) stbi__errpuc("unsupported", "Unsupported format conversion"); + } +#undef STBI__CASE + } + + STBI_FREE(data); + return good; +} + +#endif + +#ifndef STBI_NO_LINEAR + +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) { + int i, k, n; + float *output; + if (!data) return NULL; + output = (float *) stbi__malloc_mad4(x, y, comp, sizeof(float), 0); + if (output == NULL) { + STBI_FREE(data); + return stbi__errpf("outofmem", "Out of memory"); + } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp - 1; + for (i = 0; i < x * y; ++i) { + for (k = 0; k < n; ++k) { + output[i * comp + k] = (float) (pow(data[i * comp + k] / 255.0f, stbi__l2h_gamma) * stbi__l2h_scale); + } + } + if (n < comp) { + for (i = 0; i < x * y; ++i) { + output[i * comp + n] = data[i * comp + n] / 255.0f; + } + } + STBI_FREE(data); + return output; +} + +#endif + +#ifndef STBI_NO_HDR +#define stbi__float2int(x) ((int) (x)) +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) +{ + int i,k,n; + stbi_uc *output; + if (!data) return NULL; + output = (stbi_uc *) stbi__malloc_mad3(x, y, comp, 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + if (k < comp) { + float z = data[i*comp+k] * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + } + STBI_FREE(data); + return output; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// "baseline" JPEG/JFIF decoder +// +// simple implementation +// - doesn't support delayed output of y-dimension +// - simple interface (only one output format: 8-bit interleaved RGB) +// - doesn't try to recover corrupt jpegs +// - doesn't allow partial loading, loading multiple at once +// - still fast on x86 (copying globals into locals doesn't help x86) +// - allocates lots of intermediate memory (full size of all components) +// - non-interleaved case requires this anyway +// - allows good upsampling (see next) +// high-quality +// - upsampled channels are bilinearly interpolated, even across blocks +// - quality integer IDCT derived from IJG's 'slow' +// performance +// - fast huffman; reasonable integer IDCT +// - some SIMD kernels for common paths on targets with SSE2/NEON +// - uses a lot of intermediate memory, could cache poorly + +#ifndef STBI_NO_JPEG + +// huffman decoding acceleration +#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache + +typedef struct +{ + stbi_uc fast[1 << FAST_BITS]; + // weirdly, repacking this into AoS is a 10% speed loss, instead of a win + stbi__uint16 code[256]; + stbi_uc values[256]; + stbi_uc size[257]; + unsigned int maxcode[18]; + int delta[17]; // old 'firstsymbol' - old 'firstcode' +} stbi__huffman; + +typedef struct +{ + stbi__context *s; + stbi__huffman huff_dc[4]; + stbi__huffman huff_ac[4]; + stbi__uint16 dequant[4][64]; + stbi__int16 fast_ac[4][1 << FAST_BITS]; + +// sizes for components, interleaved MCUs + int img_h_max, img_v_max; + int img_mcu_x, img_mcu_y; + int img_mcu_w, img_mcu_h; + +// definition of jpeg image component + struct + { + int id; + int h,v; + int tq; + int hd,ha; + int dc_pred; + + int x,y,w2,h2; + stbi_uc *data; + void *raw_data, *raw_coeff; + stbi_uc *linebuf; + short *coeff; // progressive only + int coeff_w, coeff_h; // number of 8x8 coefficient blocks + } img_comp[4]; + + stbi__uint32 code_buffer; // jpeg entropy-coded buffer + int code_bits; // number of valid bits + unsigned char marker; // marker seen while filling entropy buffer + int nomore; // flag if we saw a marker so must stop + + int progressive; + int spec_start; + int spec_end; + int succ_high; + int succ_low; + int eob_run; + int jfif; + int app14_color_transform; // Adobe APP14 tag + int rgb; + + int scan_n, order[4]; + int restart_interval, todo; + +// kernels + void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); + void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); + stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); +} stbi__jpeg; + +static int stbi__build_huffman(stbi__huffman *h, int *count) +{ + int i,j,k=0; + unsigned int code; + // build size list for each symbol (from JPEG spec) + for (i=0; i < 16; ++i) { + for (j=0; j < count[i]; ++j) { + h->size[k++] = (stbi_uc) (i+1); + if(k >= 257) return stbi__err("bad size list","Corrupt JPEG"); + } + } + h->size[k] = 0; + + // compute actual symbols (from jpeg spec) + code = 0; + k = 0; + for(j=1; j <= 16; ++j) { + // compute delta to add to code to compute symbol id + h->delta[j] = k - code; + if (h->size[k] == j) { + while (h->size[k] == j) + h->code[k++] = (stbi__uint16) (code++); + if (code-1 >= (1u << j)) return stbi__err("bad code lengths","Corrupt JPEG"); + } + // compute largest code + 1 for this size, preshifted as needed later + h->maxcode[j] = code << (16-j); + code <<= 1; + } + h->maxcode[j] = 0xffffffff; + + // build non-spec acceleration table; 255 is flag for not-accelerated + memset(h->fast, 255, 1 << FAST_BITS); + for (i=0; i < k; ++i) { + int s = h->size[i]; + if (s <= FAST_BITS) { + int c = h->code[i] << (FAST_BITS-s); + int m = 1 << (FAST_BITS-s); + for (j=0; j < m; ++j) { + h->fast[c+j] = (stbi_uc) i; + } + } + } + return 1; +} + +// build a table that decodes both magnitude and value of small ACs in +// one go. +static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) +{ + int i; + for (i=0; i < (1 << FAST_BITS); ++i) { + stbi_uc fast = h->fast[i]; + fast_ac[i] = 0; + if (fast < 255) { + int rs = h->values[fast]; + int run = (rs >> 4) & 15; + int magbits = rs & 15; + int len = h->size[fast]; + + if (magbits && len + magbits <= FAST_BITS) { + // magnitude code followed by receive_extend code + int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); + int m = 1 << (magbits - 1); + if (k < m) k += (~0U << magbits) + 1; + // if the result is small enough, we can fit it in fast_ac table + if (k >= -128 && k <= 127) + fast_ac[i] = (stbi__int16) ((k * 256) + (run * 16) + (len + magbits)); + } + } + } +} + +static void stbi__grow_buffer_unsafe(stbi__jpeg *j) +{ + do { + unsigned int b = j->nomore ? 0 : stbi__get8(j->s); + if (b == 0xff) { + int c = stbi__get8(j->s); + while (c == 0xff) c = stbi__get8(j->s); // consume fill bytes + if (c != 0) { + j->marker = (unsigned char) c; + j->nomore = 1; + return; + } + } + j->code_buffer |= b << (24 - j->code_bits); + j->code_bits += 8; + } while (j->code_bits <= 24); +} + +// (1 << n) - 1 +static const stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; + +// decode a jpeg huffman value from the bitstream +stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) +{ + unsigned int temp; + int c,k; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + // look at the top FAST_BITS and determine what symbol ID it is, + // if the code is <= FAST_BITS + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + k = h->fast[c]; + if (k < 255) { + int s = h->size[k]; + if (s > j->code_bits) + return -1; + j->code_buffer <<= s; + j->code_bits -= s; + return h->values[k]; + } + + // naive test is to shift the code_buffer down so k bits are + // valid, then test against maxcode. To speed this up, we've + // preshifted maxcode left so that it has (16-k) 0s at the + // end; in other words, regardless of the number of bits, it + // wants to be compared against something shifted to have 16; + // that way we don't need to shift inside the loop. + temp = j->code_buffer >> 16; + for (k=FAST_BITS+1 ; ; ++k) + if (temp < h->maxcode[k]) + break; + if (k == 17) { + // error! code not found + j->code_bits -= 16; + return -1; + } + + if (k > j->code_bits) + return -1; + + // convert the huffman code to the symbol id + c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; + if(c < 0 || c >= 256) // symbol id out of bounds! + return -1; + STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); + + // convert the id to a symbol + j->code_bits -= k; + j->code_buffer <<= k; + return h->values[c]; +} + +// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); + if (j->code_bits < n) return 0; // ran out of bits from stream, return 0s intead of continuing + + sgn = j->code_buffer >> 31; // sign bit always in MSB; 0 if MSB clear (positive), 1 if MSB set (negative) + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k + (stbi__jbias[n] & (sgn - 1)); +} + +// get some unsigned bits +stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) +{ + unsigned int k; + if (j->code_bits < n) stbi__grow_buffer_unsafe(j); + if (j->code_bits < n) return 0; // ran out of bits from stream, return 0s intead of continuing + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k; +} + +stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) +{ + unsigned int k; + if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); + if (j->code_bits < 1) return 0; // ran out of bits from stream, return 0s intead of continuing + k = j->code_buffer; + j->code_buffer <<= 1; + --j->code_bits; + return k & 0x80000000; +} + +// given a value that's at position X in the zigzag stream, +// where does it appear in the 8x8 matrix coded as row-major? +static const stbi_uc stbi__jpeg_dezigzag[64+15] = +{ + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63, + // let corrupt input sample past end + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63 +}; + +// decode one 64-entry block-- +static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi__uint16 *dequant) +{ + int diff,dc,k; + int t; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0 || t > 15) return stbi__err("bad huffman code","Corrupt JPEG"); + + // 0 all the ac values now so we can do it 32-bits at a time + memset(data,0,64*sizeof(data[0])); + + diff = t ? stbi__extend_receive(j, t) : 0; + if (!stbi__addints_valid(j->img_comp[b].dc_pred, diff)) return stbi__err("bad delta","Corrupt JPEG"); + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + if (!stbi__mul2shorts_valid(dc, dequant[0])) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + data[0] = (short) (dc * dequant[0]); + + // decode AC components, see JPEG spec + k = 1; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + if (s > j->code_bits) return stbi__err("bad huffman code", "Combined length longer than code bits available"); + j->code_buffer <<= s; + j->code_bits -= s; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * dequant[zig]); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (rs != 0xf0) break; // end block + k += 16; + } else { + k += r; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); + } + } + } while (k < 64); + return 1; +} + +static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) +{ + int diff,dc; + int t; + if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + if (j->succ_high == 0) { + // first scan for DC coefficient, must be first + memset(data,0,64*sizeof(data[0])); // 0 all the ac values now + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0 || t > 15) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + diff = t ? stbi__extend_receive(j, t) : 0; + + if (!stbi__addints_valid(j->img_comp[b].dc_pred, diff)) return stbi__err("bad delta", "Corrupt JPEG"); + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + if (!stbi__mul2shorts_valid(dc, 1 << j->succ_low)) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + data[0] = (short) (dc * (1 << j->succ_low)); + } else { + // refinement scan for DC coefficient + if (stbi__jpeg_get_bit(j)) + data[0] += (short) (1 << j->succ_low); + } + return 1; +} + +// @OPTIMIZE: store non-zigzagged during the decode passes, +// and only de-zigzag when dequantizing +static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) +{ + int k; + if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->succ_high == 0) { + int shift = j->succ_low; + + if (j->eob_run) { + --j->eob_run; + return 1; + } + + k = j->spec_start; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + if (s > j->code_bits) return stbi__err("bad huffman code", "Combined length longer than code bits available"); + j->code_buffer <<= s; + j->code_bits -= s; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * (1 << shift)); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r); + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + --j->eob_run; + break; + } + k += 16; + } else { + k += r; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * (1 << shift)); + } + } + } while (k <= j->spec_end); + } else { + // refinement scan for these AC coefficients + + short bit = (short) (1 << j->succ_low); + + if (j->eob_run) { + --j->eob_run; + for (k = j->spec_start; k <= j->spec_end; ++k) { + short *p = &data[stbi__jpeg_dezigzag[k]]; + if (*p != 0) + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } + } else { + k = j->spec_start; + do { + int r,s; + int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r) - 1; + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + r = 64; // force end of block + } else { + // r=15 s=0 should write 16 0s, so we just do + // a run of 15 0s and then write s (which is 0), + // so we don't have to do anything special here + } + } else { + if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); + // sign bit + if (stbi__jpeg_get_bit(j)) + s = bit; + else + s = -bit; + } + + // advance by r + while (k <= j->spec_end) { + short *p = &data[stbi__jpeg_dezigzag[k++]]; + if (*p != 0) { + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } else { + if (r == 0) { + *p = (short) s; + break; + } + --r; + } + } + } while (k <= j->spec_end); + } + } + return 1; +} + +// take a -128..127 value and stbi__clamp it and convert to 0..255 +stbi_inline static stbi_uc stbi__clamp(int x) +{ + // trick to use a single test to catch both cases + if ((unsigned int) x > 255) { + if (x < 0) return 0; + if (x > 255) return 255; + } + return (stbi_uc) x; +} + +#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) +#define stbi__fsh(x) ((x) * 4096) + +// derived from jidctint -- DCT_ISLOW +#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ + int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ + p2 = s2; \ + p3 = s6; \ + p1 = (p2+p3) * stbi__f2f(0.5411961f); \ + t2 = p1 + p3*stbi__f2f(-1.847759065f); \ + t3 = p1 + p2*stbi__f2f( 0.765366865f); \ + p2 = s0; \ + p3 = s4; \ + t0 = stbi__fsh(p2+p3); \ + t1 = stbi__fsh(p2-p3); \ + x0 = t0+t3; \ + x3 = t0-t3; \ + x1 = t1+t2; \ + x2 = t1-t2; \ + t0 = s7; \ + t1 = s5; \ + t2 = s3; \ + t3 = s1; \ + p3 = t0+t2; \ + p4 = t1+t3; \ + p1 = t0+t3; \ + p2 = t1+t2; \ + p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ + t0 = t0*stbi__f2f( 0.298631336f); \ + t1 = t1*stbi__f2f( 2.053119869f); \ + t2 = t2*stbi__f2f( 3.072711026f); \ + t3 = t3*stbi__f2f( 1.501321110f); \ + p1 = p5 + p1*stbi__f2f(-0.899976223f); \ + p2 = p5 + p2*stbi__f2f(-2.562915447f); \ + p3 = p3*stbi__f2f(-1.961570560f); \ + p4 = p4*stbi__f2f(-0.390180644f); \ + t3 += p1+p4; \ + t2 += p2+p3; \ + t1 += p2+p4; \ + t0 += p1+p3; + +static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) +{ + int i,val[64],*v=val; + stbi_uc *o; + short *d = data; + + // columns + for (i=0; i < 8; ++i,++d, ++v) { + // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing + if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 + && d[40]==0 && d[48]==0 && d[56]==0) { + // no shortcut 0 seconds + // (1|2|3|4|5|6|7)==0 0 seconds + // all separate -0.047 seconds + // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds + int dcterm = d[0]*4; + v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; + } else { + STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) + // constants scaled things up by 1<<12; let's bring them back + // down, but keep 2 extra bits of precision + x0 += 512; x1 += 512; x2 += 512; x3 += 512; + v[ 0] = (x0+t3) >> 10; + v[56] = (x0-t3) >> 10; + v[ 8] = (x1+t2) >> 10; + v[48] = (x1-t2) >> 10; + v[16] = (x2+t1) >> 10; + v[40] = (x2-t1) >> 10; + v[24] = (x3+t0) >> 10; + v[32] = (x3-t0) >> 10; + } + } + + for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { + // no fast case since the first 1D IDCT spread components out + STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) + // constants scaled things up by 1<<12, plus we had 1<<2 from first + // loop, plus horizontal and vertical each scale by sqrt(8) so together + // we've got an extra 1<<3, so 1<<17 total we need to remove. + // so we want to round that, which means adding 0.5 * 1<<17, + // aka 65536. Also, we'll end up with -128 to 127 that we want + // to encode as 0..255 by adding 128, so we'll add that before the shift + x0 += 65536 + (128<<17); + x1 += 65536 + (128<<17); + x2 += 65536 + (128<<17); + x3 += 65536 + (128<<17); + // tried computing the shifts into temps, or'ing the temps to see + // if any were out of range, but that was slower + o[0] = stbi__clamp((x0+t3) >> 17); + o[7] = stbi__clamp((x0-t3) >> 17); + o[1] = stbi__clamp((x1+t2) >> 17); + o[6] = stbi__clamp((x1-t2) >> 17); + o[2] = stbi__clamp((x2+t1) >> 17); + o[5] = stbi__clamp((x2-t1) >> 17); + o[3] = stbi__clamp((x3+t0) >> 17); + o[4] = stbi__clamp((x3-t0) >> 17); + } +} + +#ifdef STBI_SSE2 +// sse2 integer IDCT. not the fastest possible implementation but it +// produces bit-identical results to the generic C version so it's +// fully "transparent". +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + // This is constructed to match our regular (generic) integer IDCT exactly. + __m128i row0, row1, row2, row3, row4, row5, row6, row7; + __m128i tmp; + + // dot product constant: even elems=x, odd elems=y +#define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) + + // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) + // out(1) = c1[even]*x + c1[odd]*y +#define dct_rot(out0,out1, x,y,c0,c1) \ + __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ + __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ + __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ + __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ + __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ + __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) + + // out = in << 12 (in 16-bit, out 32-bit) +#define dct_widen(out, in) \ + __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ + __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) + + // wide add +#define dct_wadd(out, a, b) \ + __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_add_epi32(a##_h, b##_h) + + // wide sub +#define dct_wsub(out, a, b) \ + __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) + + // butterfly a/b, add bias, then shift by "s" and pack +#define dct_bfly32o(out0, out1, a,b,bias,s) \ + { \ + __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ + __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ + dct_wadd(sum, abiased, b); \ + dct_wsub(dif, abiased, b); \ + out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ + out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ + } + + // 8-bit interleave step (for transposes) +#define dct_interleave8(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi8(a, b); \ + b = _mm_unpackhi_epi8(tmp, b) + + // 16-bit interleave step (for transposes) +#define dct_interleave16(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi16(a, b); \ + b = _mm_unpackhi_epi16(tmp, b) + +#define dct_pass(bias,shift) \ + { \ + /* even part */ \ + dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ + __m128i sum04 = _mm_add_epi16(row0, row4); \ + __m128i dif04 = _mm_sub_epi16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ + dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ + __m128i sum17 = _mm_add_epi16(row1, row7); \ + __m128i sum35 = _mm_add_epi16(row3, row5); \ + dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ + dct_wadd(x4, y0o, y4o); \ + dct_wadd(x5, y1o, y5o); \ + dct_wadd(x6, y2o, y5o); \ + dct_wadd(x7, y3o, y4o); \ + dct_bfly32o(row0,row7, x0,x7,bias,shift); \ + dct_bfly32o(row1,row6, x1,x6,bias,shift); \ + dct_bfly32o(row2,row5, x2,x5,bias,shift); \ + dct_bfly32o(row3,row4, x3,x4,bias,shift); \ + } + + __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); + __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); + __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); + __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); + __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); + __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); + __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); + __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); + + // rounding biases in column/row passes, see stbi__idct_block for explanation. + __m128i bias_0 = _mm_set1_epi32(512); + __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); + + // load + row0 = _mm_load_si128((const __m128i *) (data + 0*8)); + row1 = _mm_load_si128((const __m128i *) (data + 1*8)); + row2 = _mm_load_si128((const __m128i *) (data + 2*8)); + row3 = _mm_load_si128((const __m128i *) (data + 3*8)); + row4 = _mm_load_si128((const __m128i *) (data + 4*8)); + row5 = _mm_load_si128((const __m128i *) (data + 5*8)); + row6 = _mm_load_si128((const __m128i *) (data + 6*8)); + row7 = _mm_load_si128((const __m128i *) (data + 7*8)); + + // column pass + dct_pass(bias_0, 10); + + { + // 16bit 8x8 transpose pass 1 + dct_interleave16(row0, row4); + dct_interleave16(row1, row5); + dct_interleave16(row2, row6); + dct_interleave16(row3, row7); + + // transpose pass 2 + dct_interleave16(row0, row2); + dct_interleave16(row1, row3); + dct_interleave16(row4, row6); + dct_interleave16(row5, row7); + + // transpose pass 3 + dct_interleave16(row0, row1); + dct_interleave16(row2, row3); + dct_interleave16(row4, row5); + dct_interleave16(row6, row7); + } + + // row pass + dct_pass(bias_1, 17); + + { + // pack + __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 + __m128i p1 = _mm_packus_epi16(row2, row3); + __m128i p2 = _mm_packus_epi16(row4, row5); + __m128i p3 = _mm_packus_epi16(row6, row7); + + // 8bit 8x8 transpose pass 1 + dct_interleave8(p0, p2); // a0e0a1e1... + dct_interleave8(p1, p3); // c0g0c1g1... + + // transpose pass 2 + dct_interleave8(p0, p1); // a0c0e0g0... + dct_interleave8(p2, p3); // b0d0f0h0... + + // transpose pass 3 + dct_interleave8(p0, p2); // a0b0c0d0... + dct_interleave8(p1, p3); // a4b4c4d4... + + // store + _mm_storel_epi64((__m128i *) out, p0); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p2); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p1); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p3); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); + } + +#undef dct_const +#undef dct_rot +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_interleave8 +#undef dct_interleave16 +#undef dct_pass +} + +#endif // STBI_SSE2 + +#ifdef STBI_NEON + +// NEON integer IDCT. should produce bit-identical +// results to the generic C version. +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; + + int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); + int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); + int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); + int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); + int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); + int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); + int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); + int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); + int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); + int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); + int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); + int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); + +#define dct_long_mul(out, inq, coeff) \ + int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) + +#define dct_long_mac(out, acc, inq, coeff) \ + int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) + +#define dct_widen(out, inq) \ + int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ + int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) + +// wide add +#define dct_wadd(out, a, b) \ + int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vaddq_s32(a##_h, b##_h) + +// wide sub +#define dct_wsub(out, a, b) \ + int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vsubq_s32(a##_h, b##_h) + +// butterfly a/b, then shift using "shiftop" by "s" and pack +#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ + { \ + dct_wadd(sum, a, b); \ + dct_wsub(dif, a, b); \ + out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ + out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ + } + +#define dct_pass(shiftop, shift) \ + { \ + /* even part */ \ + int16x8_t sum26 = vaddq_s16(row2, row6); \ + dct_long_mul(p1e, sum26, rot0_0); \ + dct_long_mac(t2e, p1e, row6, rot0_1); \ + dct_long_mac(t3e, p1e, row2, rot0_2); \ + int16x8_t sum04 = vaddq_s16(row0, row4); \ + int16x8_t dif04 = vsubq_s16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + int16x8_t sum15 = vaddq_s16(row1, row5); \ + int16x8_t sum17 = vaddq_s16(row1, row7); \ + int16x8_t sum35 = vaddq_s16(row3, row5); \ + int16x8_t sum37 = vaddq_s16(row3, row7); \ + int16x8_t sumodd = vaddq_s16(sum17, sum35); \ + dct_long_mul(p5o, sumodd, rot1_0); \ + dct_long_mac(p1o, p5o, sum17, rot1_1); \ + dct_long_mac(p2o, p5o, sum35, rot1_2); \ + dct_long_mul(p3o, sum37, rot2_0); \ + dct_long_mul(p4o, sum15, rot2_1); \ + dct_wadd(sump13o, p1o, p3o); \ + dct_wadd(sump24o, p2o, p4o); \ + dct_wadd(sump23o, p2o, p3o); \ + dct_wadd(sump14o, p1o, p4o); \ + dct_long_mac(x4, sump13o, row7, rot3_0); \ + dct_long_mac(x5, sump24o, row5, rot3_1); \ + dct_long_mac(x6, sump23o, row3, rot3_2); \ + dct_long_mac(x7, sump14o, row1, rot3_3); \ + dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ + dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ + dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ + dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ + } + + // load + row0 = vld1q_s16(data + 0*8); + row1 = vld1q_s16(data + 1*8); + row2 = vld1q_s16(data + 2*8); + row3 = vld1q_s16(data + 3*8); + row4 = vld1q_s16(data + 4*8); + row5 = vld1q_s16(data + 5*8); + row6 = vld1q_s16(data + 6*8); + row7 = vld1q_s16(data + 7*8); + + // add DC bias + row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); + + // column pass + dct_pass(vrshrn_n_s32, 10); + + // 16bit 8x8 transpose + { +// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. +// whether compilers actually get this is another story, sadly. +#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } +#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } + + // pass 1 + dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 + dct_trn16(row2, row3); + dct_trn16(row4, row5); + dct_trn16(row6, row7); + + // pass 2 + dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 + dct_trn32(row1, row3); + dct_trn32(row4, row6); + dct_trn32(row5, row7); + + // pass 3 + dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 + dct_trn64(row1, row5); + dct_trn64(row2, row6); + dct_trn64(row3, row7); + +#undef dct_trn16 +#undef dct_trn32 +#undef dct_trn64 + } + + // row pass + // vrshrn_n_s32 only supports shifts up to 16, we need + // 17. so do a non-rounding shift of 16 first then follow + // up with a rounding shift by 1. + dct_pass(vshrn_n_s32, 16); + + { + // pack and round + uint8x8_t p0 = vqrshrun_n_s16(row0, 1); + uint8x8_t p1 = vqrshrun_n_s16(row1, 1); + uint8x8_t p2 = vqrshrun_n_s16(row2, 1); + uint8x8_t p3 = vqrshrun_n_s16(row3, 1); + uint8x8_t p4 = vqrshrun_n_s16(row4, 1); + uint8x8_t p5 = vqrshrun_n_s16(row5, 1); + uint8x8_t p6 = vqrshrun_n_s16(row6, 1); + uint8x8_t p7 = vqrshrun_n_s16(row7, 1); + + // again, these can translate into one instruction, but often don't. +#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } +#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } + + // sadly can't use interleaved stores here since we only write + // 8 bytes to each scan line! + + // 8x8 8-bit transpose pass 1 + dct_trn8_8(p0, p1); + dct_trn8_8(p2, p3); + dct_trn8_8(p4, p5); + dct_trn8_8(p6, p7); + + // pass 2 + dct_trn8_16(p0, p2); + dct_trn8_16(p1, p3); + dct_trn8_16(p4, p6); + dct_trn8_16(p5, p7); + + // pass 3 + dct_trn8_32(p0, p4); + dct_trn8_32(p1, p5); + dct_trn8_32(p2, p6); + dct_trn8_32(p3, p7); + + // store + vst1_u8(out, p0); out += out_stride; + vst1_u8(out, p1); out += out_stride; + vst1_u8(out, p2); out += out_stride; + vst1_u8(out, p3); out += out_stride; + vst1_u8(out, p4); out += out_stride; + vst1_u8(out, p5); out += out_stride; + vst1_u8(out, p6); out += out_stride; + vst1_u8(out, p7); + +#undef dct_trn8_8 +#undef dct_trn8_16 +#undef dct_trn8_32 + } + +#undef dct_long_mul +#undef dct_long_mac +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_pass +} + +#endif // STBI_NEON + +#define STBI__MARKER_none 0xff +// if there's a pending marker from the entropy stream, return that +// otherwise, fetch from the stream and get a marker. if there's no +// marker, return 0xff, which is never a valid marker value +static stbi_uc stbi__get_marker(stbi__jpeg *j) +{ + stbi_uc x; + if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } + x = stbi__get8(j->s); + if (x != 0xff) return STBI__MARKER_none; + while (x == 0xff) + x = stbi__get8(j->s); // consume repeated 0xff fill bytes + return x; +} + +// in each scan, we'll have scan_n components, and the order +// of the components is specified by order[] +#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) + +// after a restart interval, stbi__jpeg_reset the entropy decoder and +// the dc prediction +static void stbi__jpeg_reset(stbi__jpeg *j) +{ + j->code_bits = 0; + j->code_buffer = 0; + j->nomore = 0; + j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = j->img_comp[3].dc_pred = 0; + j->marker = STBI__MARKER_none; + j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; + j->eob_run = 0; + // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, + // since we don't even allow 1<<30 pixels +} + +static int stbi__parse_entropy_coded_data(stbi__jpeg *z) +{ + stbi__jpeg_reset(z); + if (!z->progressive) { + if (z->scan_n == 1) { + int i,j; + STBI_SIMD_ALIGN(short, data[64]); + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + STBI_SIMD_ALIGN(short, data[64]); + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x)*8; + int y2 = (j*z->img_comp[n].v + y)*8; + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } else { + if (z->scan_n == 1) { + int i,j; + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + if (z->spec_start == 0) { + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } else { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) + return 0; + } + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x); + int y2 = (j*z->img_comp[n].v + y); + short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } +} + +static void stbi__jpeg_dequantize(short *data, stbi__uint16 *dequant) +{ + int i; + for (i=0; i < 64; ++i) + data[i] *= dequant[i]; +} + +static void stbi__jpeg_finish(stbi__jpeg *z) +{ + if (z->progressive) { + // dequantize and idct the data + int i,j,n; + for (n=0; n < z->s->img_n; ++n) { + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + } + } + } + } +} + +static int stbi__process_marker(stbi__jpeg *z, int m) +{ + int L; + switch (m) { + case STBI__MARKER_none: // no marker found + return stbi__err("expected marker","Corrupt JPEG"); + + case 0xDD: // DRI - specify restart interval + if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); + z->restart_interval = stbi__get16be(z->s); + return 1; + + case 0xDB: // DQT - define quantization table + L = stbi__get16be(z->s)-2; + while (L > 0) { + int q = stbi__get8(z->s); + int p = q >> 4, sixteen = (p != 0); + int t = q & 15,i; + if (p != 0 && p != 1) return stbi__err("bad DQT type","Corrupt JPEG"); + if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); + + for (i=0; i < 64; ++i) + z->dequant[t][stbi__jpeg_dezigzag[i]] = (stbi__uint16)(sixteen ? stbi__get16be(z->s) : stbi__get8(z->s)); + L -= (sixteen ? 129 : 65); + } + return L==0; + + case 0xC4: // DHT - define huffman table + L = stbi__get16be(z->s)-2; + while (L > 0) { + stbi_uc *v; + int sizes[16],i,n=0; + int q = stbi__get8(z->s); + int tc = q >> 4; + int th = q & 15; + if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); + for (i=0; i < 16; ++i) { + sizes[i] = stbi__get8(z->s); + n += sizes[i]; + } + if(n > 256) return stbi__err("bad DHT header","Corrupt JPEG"); // Loop over i < n would write past end of values! + L -= 17; + if (tc == 0) { + if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; + v = z->huff_dc[th].values; + } else { + if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; + v = z->huff_ac[th].values; + } + for (i=0; i < n; ++i) + v[i] = stbi__get8(z->s); + if (tc != 0) + stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); + L -= n; + } + return L==0; + } + + // check for comment block or APP blocks + if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { + L = stbi__get16be(z->s); + if (L < 2) { + if (m == 0xFE) + return stbi__err("bad COM len","Corrupt JPEG"); + else + return stbi__err("bad APP len","Corrupt JPEG"); + } + L -= 2; + + if (m == 0xE0 && L >= 5) { // JFIF APP0 segment + static const unsigned char tag[5] = {'J','F','I','F','\0'}; + int ok = 1; + int i; + for (i=0; i < 5; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 5; + if (ok) + z->jfif = 1; + } else if (m == 0xEE && L >= 12) { // Adobe APP14 segment + static const unsigned char tag[6] = {'A','d','o','b','e','\0'}; + int ok = 1; + int i; + for (i=0; i < 6; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 6; + if (ok) { + stbi__get8(z->s); // version + stbi__get16be(z->s); // flags0 + stbi__get16be(z->s); // flags1 + z->app14_color_transform = stbi__get8(z->s); // color transform + L -= 6; + } + } + + stbi__skip(z->s, L); + return 1; + } + + return stbi__err("unknown marker","Corrupt JPEG"); +} + +// after we see SOS +static int stbi__process_scan_header(stbi__jpeg *z) +{ + int i; + int Ls = stbi__get16be(z->s); + z->scan_n = stbi__get8(z->s); + if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); + if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); + for (i=0; i < z->scan_n; ++i) { + int id = stbi__get8(z->s), which; + int q = stbi__get8(z->s); + for (which = 0; which < z->s->img_n; ++which) + if (z->img_comp[which].id == id) + break; + if (which == z->s->img_n) return 0; // no match + z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); + z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); + z->order[i] = which; + } + + { + int aa; + z->spec_start = stbi__get8(z->s); + z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 + aa = stbi__get8(z->s); + z->succ_high = (aa >> 4); + z->succ_low = (aa & 15); + if (z->progressive) { + if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) + return stbi__err("bad SOS", "Corrupt JPEG"); + } else { + if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); + if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); + z->spec_end = 63; + } + } + + return 1; +} + +static int stbi__free_jpeg_components(stbi__jpeg *z, int ncomp, int why) +{ + int i; + for (i=0; i < ncomp; ++i) { + if (z->img_comp[i].raw_data) { + STBI_FREE(z->img_comp[i].raw_data); + z->img_comp[i].raw_data = NULL; + z->img_comp[i].data = NULL; + } + if (z->img_comp[i].raw_coeff) { + STBI_FREE(z->img_comp[i].raw_coeff); + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].coeff = 0; + } + if (z->img_comp[i].linebuf) { + STBI_FREE(z->img_comp[i].linebuf); + z->img_comp[i].linebuf = NULL; + } + } + return why; +} + +static int stbi__process_frame_header(stbi__jpeg *z, int scan) +{ + stbi__context *s = z->s; + int Lf,p,i,q, h_max=1,v_max=1,c; + Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG + p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline + s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG + s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + c = stbi__get8(s); + if (c != 3 && c != 1 && c != 4) return stbi__err("bad component count","Corrupt JPEG"); + s->img_n = c; + for (i=0; i < c; ++i) { + z->img_comp[i].data = NULL; + z->img_comp[i].linebuf = NULL; + } + + if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); + + z->rgb = 0; + for (i=0; i < s->img_n; ++i) { + static const unsigned char rgb[3] = { 'R', 'G', 'B' }; + z->img_comp[i].id = stbi__get8(s); + if (s->img_n == 3 && z->img_comp[i].id == rgb[i]) + ++z->rgb; + q = stbi__get8(s); + z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); + z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); + z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); + } + + if (scan != STBI__SCAN_load) return 1; + + if (!stbi__mad3sizes_valid(s->img_x, s->img_y, s->img_n, 0)) return stbi__err("too large", "Image too large to decode"); + + for (i=0; i < s->img_n; ++i) { + if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; + if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; + } + + // check that plane subsampling factors are integer ratios; our resamplers can't deal with fractional ratios + // and I've never seen a non-corrupted JPEG file actually use them + for (i=0; i < s->img_n; ++i) { + if (h_max % z->img_comp[i].h != 0) return stbi__err("bad H","Corrupt JPEG"); + if (v_max % z->img_comp[i].v != 0) return stbi__err("bad V","Corrupt JPEG"); + } + + // compute interleaved mcu info + z->img_h_max = h_max; + z->img_v_max = v_max; + z->img_mcu_w = h_max * 8; + z->img_mcu_h = v_max * 8; + // these sizes can't be more than 17 bits + z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; + z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; + + for (i=0; i < s->img_n; ++i) { + // number of effective pixels (e.g. for non-interleaved MCU) + z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; + z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; + // to simplify generation, we'll allocate enough memory to decode + // the bogus oversized data from using interleaved MCUs and their + // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't + // discard the extra data until colorspace conversion + // + // img_mcu_x, img_mcu_y: <=17 bits; comp[i].h and .v are <=4 (checked earlier) + // so these muls can't overflow with 32-bit ints (which we require) + z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; + z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; + z->img_comp[i].coeff = 0; + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].linebuf = NULL; + z->img_comp[i].raw_data = stbi__malloc_mad2(z->img_comp[i].w2, z->img_comp[i].h2, 15); + if (z->img_comp[i].raw_data == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + // align blocks for idct using mmx/sse + z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); + if (z->progressive) { + // w2, h2 are multiples of 8 (see above) + z->img_comp[i].coeff_w = z->img_comp[i].w2 / 8; + z->img_comp[i].coeff_h = z->img_comp[i].h2 / 8; + z->img_comp[i].raw_coeff = stbi__malloc_mad3(z->img_comp[i].w2, z->img_comp[i].h2, sizeof(short), 15); + if (z->img_comp[i].raw_coeff == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); + } + } + + return 1; +} + +// use comparisons since in some cases we handle more than one case (e.g. SOF) +#define stbi__DNL(x) ((x) == 0xdc) +#define stbi__SOI(x) ((x) == 0xd8) +#define stbi__EOI(x) ((x) == 0xd9) +#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) +#define stbi__SOS(x) ((x) == 0xda) + +#define stbi__SOF_progressive(x) ((x) == 0xc2) + +static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) +{ + int m; + z->jfif = 0; + z->app14_color_transform = -1; // valid values are 0,1,2 + z->marker = STBI__MARKER_none; // initialize cached marker to empty + m = stbi__get_marker(z); + if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); + if (scan == STBI__SCAN_type) return 1; + m = stbi__get_marker(z); + while (!stbi__SOF(m)) { + if (!stbi__process_marker(z,m)) return 0; + m = stbi__get_marker(z); + while (m == STBI__MARKER_none) { + // some files have extra padding after their blocks, so ok, we'll scan + if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); + m = stbi__get_marker(z); + } + } + z->progressive = stbi__SOF_progressive(m); + if (!stbi__process_frame_header(z, scan)) return 0; + return 1; +} + +static stbi_uc stbi__skip_jpeg_junk_at_end(stbi__jpeg *j) +{ + // some JPEGs have junk at end, skip over it but if we find what looks + // like a valid marker, resume there + while (!stbi__at_eof(j->s)) { + stbi_uc x = stbi__get8(j->s); + while (x == 0xff) { // might be a marker + if (stbi__at_eof(j->s)) return STBI__MARKER_none; + x = stbi__get8(j->s); + if (x != 0x00 && x != 0xff) { + // not a stuffed zero or lead-in to another marker, looks + // like an actual marker, return it + return x; + } + // stuffed zero has x=0 now which ends the loop, meaning we go + // back to regular scan loop. + // repeated 0xff keeps trying to read the next byte of the marker. + } + } + return STBI__MARKER_none; +} + +// decode image to YCbCr format +static int stbi__decode_jpeg_image(stbi__jpeg *j) +{ + int m; + for (m = 0; m < 4; m++) { + j->img_comp[m].raw_data = NULL; + j->img_comp[m].raw_coeff = NULL; + } + j->restart_interval = 0; + if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; + m = stbi__get_marker(j); + while (!stbi__EOI(m)) { + if (stbi__SOS(m)) { + if (!stbi__process_scan_header(j)) return 0; + if (!stbi__parse_entropy_coded_data(j)) return 0; + if (j->marker == STBI__MARKER_none ) { + j->marker = stbi__skip_jpeg_junk_at_end(j); + // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 + } + m = stbi__get_marker(j); + if (STBI__RESTART(m)) + m = stbi__get_marker(j); + } else if (stbi__DNL(m)) { + int Ld = stbi__get16be(j->s); + stbi__uint32 NL = stbi__get16be(j->s); + if (Ld != 4) return stbi__err("bad DNL len", "Corrupt JPEG"); + if (NL != j->s->img_y) return stbi__err("bad DNL height", "Corrupt JPEG"); + m = stbi__get_marker(j); + } else { + if (!stbi__process_marker(j, m)) return 1; + m = stbi__get_marker(j); + } + } + if (j->progressive) + stbi__jpeg_finish(j); + return 1; +} + +// static jfif-centered resampling (across block boundaries) + +typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, + int w, int hs); + +#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) + +static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + STBI_NOTUSED(out); + STBI_NOTUSED(in_far); + STBI_NOTUSED(w); + STBI_NOTUSED(hs); + return in_near; +} + +static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples vertically for every one in input + int i; + STBI_NOTUSED(hs); + for (i=0; i < w; ++i) + out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); + return out; +} + +static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples horizontally for every one in input + int i; + stbi_uc *input = in_near; + + if (w == 1) { + // if only one sample, can't do any interpolation + out[0] = out[1] = input[0]; + return out; + } + + out[0] = input[0]; + out[1] = stbi__div4(input[0]*3 + input[1] + 2); + for (i=1; i < w-1; ++i) { + int n = 3*input[i]+2; + out[i*2+0] = stbi__div4(n+input[i-1]); + out[i*2+1] = stbi__div4(n+input[i+1]); + } + out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); + out[i*2+1] = input[w-1]; + + STBI_NOTUSED(in_far); + STBI_NOTUSED(hs); + + return out; +} + +#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) + +static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i,t0,t1; + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + out[0] = stbi__div4(t1+2); + for (i=1; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i=0,t0,t1; + + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + // process groups of 8 pixels for as long as we can. + // note we can't handle the last pixel in a row in this loop + // because we need to handle the filter boundary conditions. + for (; i < ((w-1) & ~7); i += 8) { +#if defined(STBI_SSE2) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + __m128i zero = _mm_setzero_si128(); + __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); + __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); + __m128i farw = _mm_unpacklo_epi8(farb, zero); + __m128i nearw = _mm_unpacklo_epi8(nearb, zero); + __m128i diff = _mm_sub_epi16(farw, nearw); + __m128i nears = _mm_slli_epi16(nearw, 2); + __m128i curr = _mm_add_epi16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + __m128i prv0 = _mm_slli_si128(curr, 2); + __m128i nxt0 = _mm_srli_si128(curr, 2); + __m128i prev = _mm_insert_epi16(prv0, t1, 0); + __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + __m128i bias = _mm_set1_epi16(8); + __m128i curs = _mm_slli_epi16(curr, 2); + __m128i prvd = _mm_sub_epi16(prev, curr); + __m128i nxtd = _mm_sub_epi16(next, curr); + __m128i curb = _mm_add_epi16(curs, bias); + __m128i even = _mm_add_epi16(prvd, curb); + __m128i odd = _mm_add_epi16(nxtd, curb); + + // interleave even and odd pixels, then undo scaling. + __m128i int0 = _mm_unpacklo_epi16(even, odd); + __m128i int1 = _mm_unpackhi_epi16(even, odd); + __m128i de0 = _mm_srli_epi16(int0, 4); + __m128i de1 = _mm_srli_epi16(int1, 4); + + // pack and write output + __m128i outv = _mm_packus_epi16(de0, de1); + _mm_storeu_si128((__m128i *) (out + i*2), outv); +#elif defined(STBI_NEON) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + uint8x8_t farb = vld1_u8(in_far + i); + uint8x8_t nearb = vld1_u8(in_near + i); + int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); + int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); + int16x8_t curr = vaddq_s16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + int16x8_t prv0 = vextq_s16(curr, curr, 7); + int16x8_t nxt0 = vextq_s16(curr, curr, 1); + int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); + int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + int16x8_t curs = vshlq_n_s16(curr, 2); + int16x8_t prvd = vsubq_s16(prev, curr); + int16x8_t nxtd = vsubq_s16(next, curr); + int16x8_t even = vaddq_s16(curs, prvd); + int16x8_t odd = vaddq_s16(curs, nxtd); + + // undo scaling and round, then store with even/odd phases interleaved + uint8x8x2_t o; + o.val[0] = vqrshrun_n_s16(even, 4); + o.val[1] = vqrshrun_n_s16(odd, 4); + vst2_u8(out + i*2, o); +#endif + + // "previous" value for next iter + t1 = 3*in_near[i+7] + in_far[i+7]; + } + + t0 = t1; + t1 = 3*in_near[i] + in_far[i]; + out[i*2] = stbi__div16(3*t1 + t0 + 8); + + for (++i; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} +#endif + +static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // resample with nearest-neighbor + int i,j; + STBI_NOTUSED(in_far); + for (i=0; i < w; ++i) + for (j=0; j < hs; ++j) + out[i*hs+j] = in_near[i]; + return out; +} + +// this is a reduced-precision calculation of YCbCr-to-RGB introduced +// to make sure the code produces the same results in both SIMD and scalar +#define stbi__float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + (cr*-stbi__float2fixed(0.71414f)) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) +{ + int i = 0; + +#ifdef STBI_SSE2 + // step == 3 is pretty ugly on the final interleave, and i'm not convinced + // it's useful in practice (you wouldn't use it for textures, for example). + // so just accelerate step == 4 case. + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + __m128i signflip = _mm_set1_epi8(-0x80); + __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); + __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); + __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); + __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); + __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); + __m128i xw = _mm_set1_epi16(255); // alpha channel + + for (; i+7 < count; i += 8) { + // load + __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); + __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); + __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); + __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 + __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 + + // unpack to short (and left-shift cr, cb by 8) + __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); + __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); + __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); + + // color transform + __m128i yws = _mm_srli_epi16(yw, 4); + __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); + __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); + __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); + __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); + __m128i rws = _mm_add_epi16(cr0, yws); + __m128i gwt = _mm_add_epi16(cb0, yws); + __m128i bws = _mm_add_epi16(yws, cb1); + __m128i gws = _mm_add_epi16(gwt, cr1); + + // descale + __m128i rw = _mm_srai_epi16(rws, 4); + __m128i bw = _mm_srai_epi16(bws, 4); + __m128i gw = _mm_srai_epi16(gws, 4); + + // back to byte, set up for transpose + __m128i brb = _mm_packus_epi16(rw, bw); + __m128i gxb = _mm_packus_epi16(gw, xw); + + // transpose to interleave channels + __m128i t0 = _mm_unpacklo_epi8(brb, gxb); + __m128i t1 = _mm_unpackhi_epi8(brb, gxb); + __m128i o0 = _mm_unpacklo_epi16(t0, t1); + __m128i o1 = _mm_unpackhi_epi16(t0, t1); + + // store + _mm_storeu_si128((__m128i *) (out + 0), o0); + _mm_storeu_si128((__m128i *) (out + 16), o1); + out += 32; + } + } +#endif + +#ifdef STBI_NEON + // in this version, step=3 support would be easy to add. but is there demand? + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + uint8x8_t signflip = vdup_n_u8(0x80); + int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); + int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); + int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); + int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); + + for (; i+7 < count; i += 8) { + // load + uint8x8_t y_bytes = vld1_u8(y + i); + uint8x8_t cr_bytes = vld1_u8(pcr + i); + uint8x8_t cb_bytes = vld1_u8(pcb + i); + int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); + int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); + + // expand to s16 + int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); + int16x8_t crw = vshll_n_s8(cr_biased, 7); + int16x8_t cbw = vshll_n_s8(cb_biased, 7); + + // color transform + int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); + int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); + int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); + int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); + int16x8_t rws = vaddq_s16(yws, cr0); + int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); + int16x8_t bws = vaddq_s16(yws, cb1); + + // undo scaling, round, convert to byte + uint8x8x4_t o; + o.val[0] = vqrshrun_n_s16(rws, 4); + o.val[1] = vqrshrun_n_s16(gws, 4); + o.val[2] = vqrshrun_n_s16(bws, 4); + o.val[3] = vdup_n_u8(255); + + // store, interleaving r/g/b/a + vst4_u8(out, o); + out += 8*4; + } + } +#endif + + for (; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + cr*-stbi__float2fixed(0.71414f) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#endif + +// set up the kernels +static void stbi__setup_jpeg(stbi__jpeg *j) +{ + j->idct_block_kernel = stbi__idct_block; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; + +#ifdef STBI_SSE2 + if (stbi__sse2_available()) { + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; + } +#endif + +#ifdef STBI_NEON + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; +#endif +} + +// clean up the temporary component buffers +static void stbi__cleanup_jpeg(stbi__jpeg *j) +{ + stbi__free_jpeg_components(j, j->s->img_n, 0); +} + +typedef struct +{ + resample_row_func resample; + stbi_uc *line0,*line1; + int hs,vs; // expansion factor in each axis + int w_lores; // horizontal pixels pre-expansion + int ystep; // how far through vertical expansion we are + int ypos; // which pre-expansion row we're on +} stbi__resample; + +// fast 0..255 * 0..255 => 0..255 rounded multiplication +static stbi_uc stbi__blinn_8x8(stbi_uc x, stbi_uc y) +{ + unsigned int t = x*y + 128; + return (stbi_uc) ((t + (t >>8)) >> 8); +} + +static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) +{ + int n, decode_n, is_rgb; + z->s->img_n = 0; // make stbi__cleanup_jpeg safe + + // validate req_comp + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + + // load a jpeg image from whichever source, but leave in YCbCr format + if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } + + // determine actual number of components to generate + n = req_comp ? req_comp : z->s->img_n >= 3 ? 3 : 1; + + is_rgb = z->s->img_n == 3 && (z->rgb == 3 || (z->app14_color_transform == 0 && !z->jfif)); + + if (z->s->img_n == 3 && n < 3 && !is_rgb) + decode_n = 1; + else + decode_n = z->s->img_n; + + // nothing to do if no components requested; check this now to avoid + // accessing uninitialized coutput[0] later + if (decode_n <= 0) { stbi__cleanup_jpeg(z); return NULL; } + + // resample and color-convert + { + int k; + unsigned int i,j; + stbi_uc *output; + stbi_uc *coutput[4] = { NULL, NULL, NULL, NULL }; + + stbi__resample res_comp[4]; + + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + + // allocate line buffer big enough for upsampling off the edges + // with upsample factor of 4 + z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); + if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + r->hs = z->img_h_max / z->img_comp[k].h; + r->vs = z->img_v_max / z->img_comp[k].v; + r->ystep = r->vs >> 1; + r->w_lores = (z->s->img_x + r->hs-1) / r->hs; + r->ypos = 0; + r->line0 = r->line1 = z->img_comp[k].data; + + if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; + else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; + else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; + else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; + else r->resample = stbi__resample_row_generic; + } + + // can't error after this so, this is safe + output = (stbi_uc *) stbi__malloc_mad3(n, z->s->img_x, z->s->img_y, 1); + if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + // now go ahead and resample + for (j=0; j < z->s->img_y; ++j) { + stbi_uc *out = output + n * z->s->img_x * j; + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + int y_bot = r->ystep >= (r->vs >> 1); + coutput[k] = r->resample(z->img_comp[k].linebuf, + y_bot ? r->line1 : r->line0, + y_bot ? r->line0 : r->line1, + r->w_lores, r->hs); + if (++r->ystep >= r->vs) { + r->ystep = 0; + r->line0 = r->line1; + if (++r->ypos < z->img_comp[k].y) + r->line1 += z->img_comp[k].w2; + } + } + if (n >= 3) { + stbi_uc *y = coutput[0]; + if (z->s->img_n == 3) { + if (is_rgb) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = y[i]; + out[1] = coutput[1][i]; + out[2] = coutput[2][i]; + out[3] = 255; + out += n; + } + } else { + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else if (z->s->img_n == 4) { + if (z->app14_color_transform == 0) { // CMYK + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(coutput[0][i], m); + out[1] = stbi__blinn_8x8(coutput[1][i], m); + out[2] = stbi__blinn_8x8(coutput[2][i], m); + out[3] = 255; + out += n; + } + } else if (z->app14_color_transform == 2) { // YCCK + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(255 - out[0], m); + out[1] = stbi__blinn_8x8(255 - out[1], m); + out[2] = stbi__blinn_8x8(255 - out[2], m); + out += n; + } + } else { // YCbCr + alpha? Ignore the fourth channel for now + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else + for (i=0; i < z->s->img_x; ++i) { + out[0] = out[1] = out[2] = y[i]; + out[3] = 255; // not used if n==3 + out += n; + } + } else { + if (is_rgb) { + if (n == 1) + for (i=0; i < z->s->img_x; ++i) + *out++ = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + else { + for (i=0; i < z->s->img_x; ++i, out += 2) { + out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + out[1] = 255; + } + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 0) { + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + stbi_uc r = stbi__blinn_8x8(coutput[0][i], m); + stbi_uc g = stbi__blinn_8x8(coutput[1][i], m); + stbi_uc b = stbi__blinn_8x8(coutput[2][i], m); + out[0] = stbi__compute_y(r, g, b); + out[1] = 255; + out += n; + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 2) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = stbi__blinn_8x8(255 - coutput[0][i], coutput[3][i]); + out[1] = 255; + out += n; + } + } else { + stbi_uc *y = coutput[0]; + if (n == 1) + for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; + else + for (i=0; i < z->s->img_x; ++i) { *out++ = y[i]; *out++ = 255; } + } + } + } + stbi__cleanup_jpeg(z); + *out_x = z->s->img_x; + *out_y = z->s->img_y; + if (comp) *comp = z->s->img_n >= 3 ? 3 : 1; // report original components, not output + return output; + } +} + +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + unsigned char* result; + stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); + if (!j) return stbi__errpuc("outofmem", "Out of memory"); + memset(j, 0, sizeof(stbi__jpeg)); + STBI_NOTUSED(ri); + j->s = s; + stbi__setup_jpeg(j); + result = load_jpeg_image(j, x,y,comp,req_comp); + STBI_FREE(j); + return result; +} + +static int stbi__jpeg_test(stbi__context *s) +{ + int r; + stbi__jpeg* j = (stbi__jpeg*)stbi__malloc(sizeof(stbi__jpeg)); + if (!j) return stbi__err("outofmem", "Out of memory"); + memset(j, 0, sizeof(stbi__jpeg)); + j->s = s; + stbi__setup_jpeg(j); + r = stbi__decode_jpeg_header(j, STBI__SCAN_type); + stbi__rewind(s); + STBI_FREE(j); + return r; +} + +static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) +{ + if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { + stbi__rewind( j->s ); + return 0; + } + if (x) *x = j->s->img_x; + if (y) *y = j->s->img_y; + if (comp) *comp = j->s->img_n >= 3 ? 3 : 1; + return 1; +} + +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) +{ + int result; + stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); + if (!j) return stbi__err("outofmem", "Out of memory"); + memset(j, 0, sizeof(stbi__jpeg)); + j->s = s; + result = stbi__jpeg_info_raw(j, x, y, comp); + STBI_FREE(j); + return result; +} +#endif + +// public domain zlib decode v0.2 Sean Barrett 2006-11-18 +// simple implementation +// - all input must be provided in an upfront buffer +// - all output is written to a single output buffer (can malloc/realloc) +// performance +// - fast huffman + +#ifndef STBI_NO_ZLIB + +// fast-way is faster to check than jpeg huffman, but slow way is slower +#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) +#define STBI__ZNSYMS 288 // number of symbols in literal/length alphabet + +// zlib-style huffman encoding +// (jpegs packs from left, zlib from right, so can't share code) +typedef struct { + stbi__uint16 fast[1 << STBI__ZFAST_BITS]; + stbi__uint16 firstcode[16]; + int maxcode[17]; + stbi__uint16 firstsymbol[16]; + stbi_uc size[STBI__ZNSYMS]; + stbi__uint16 value[STBI__ZNSYMS]; +} stbi__zhuffman; + +stbi_inline static int stbi__bitreverse16(int n) { + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +stbi_inline static int stbi__bit_reverse(int v, int bits) { + STBI_ASSERT(bits <= 16); + // to bit reverse n bits, reverse 16 and shift + // e.g. 11 bits, bit reverse and shift away 5 + return stbi__bitreverse16(v) >> (16 - bits); +} + +static int stbi__zbuild_huffman(stbi__zhuffman *z, const stbi_uc *sizelist, int num) { + int i, k = 0; + int code, next_code[16], sizes[17]; + + // DEFLATE spec for generating codes + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 0, sizeof(z->fast)); + for (i = 0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i = 1; i < 16; ++i) + if (sizes[i] > (1 << i)) + return stbi__err("bad sizes", "Corrupt PNG"); + code = 0; + for (i = 1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (stbi__uint16) code; + z->firstsymbol[i] = (stbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code - 1 >= (1 << i)) return stbi__err("bad codelengths", "Corrupt PNG"); + z->maxcode[i] = code << (16 - i); // preshift for inner loop + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; // sentinel + for (i = 0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); + z->size[c] = (stbi_uc) s; + z->value[c] = (stbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int j = stbi__bit_reverse(next_code[s], s); + while (j < (1 << STBI__ZFAST_BITS)) { + z->fast[j] = fastv; + j += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +// zlib-from-memory implementation for PNG reading +// because PNG allows splitting the zlib stream arbitrarily, +// and it's annoying structurally to have PNG call ZLIB call PNG, +// we require PNG read all the IDATs and combine them into a single +// memory buffer + +typedef struct { + stbi_uc *zbuffer, *zbuffer_end; + int num_bits; + int hit_zeof_once; + stbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + stbi__zhuffman z_length, z_distance; +} stbi__zbuf; + +stbi_inline static int stbi__zeof(stbi__zbuf *z) { + return (z->zbuffer >= z->zbuffer_end); +} + +stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) { + return stbi__zeof(z) ? 0 : *z->zbuffer++; +} + +static void stbi__fill_bits(stbi__zbuf *z) { + do { + if (z->code_buffer >= (1U << z->num_bits)) { + z->zbuffer = z->zbuffer_end; /* treat this as EOF so we fail. */ + return; + } + z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) { + unsigned int k; + if (z->num_bits < n) stbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) { + int b, s, k; + // not resolved by fast table, so compute it the slow way + // use jpeg approach, which requires MSbits at top + k = stbi__bit_reverse(a->code_buffer, 16); + for (s = STBI__ZFAST_BITS + 1;; ++s) + if (k < z->maxcode[s]) + break; + if (s >= 16) return -1; // invalid code! + // code size is s, so: + b = (k >> (16 - s)) - z->firstcode[s] + z->firstsymbol[s]; + if (b >= STBI__ZNSYMS) return -1; // some data was corrupt somewhere! + if (z->size[b] != s) return -1; // was originally an assert, but report failure instead. + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) { + int b, s; + if (a->num_bits < 16) { + if (stbi__zeof(a)) { + if (!a->hit_zeof_once) { + // This is the first time we hit eof, insert 16 extra padding btis + // to allow us to keep going; if we actually consume any of them + // though, that is invalid data. This is caught later. + a->hit_zeof_once = 1; + a->num_bits += 16; // add 16 implicit zero bits + } else { + // We already inserted our extra 16 padding bits and are again + // out, this stream is actually prematurely terminated. + return -1; + } + } else { + stbi__fill_bits(a); + } + } + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b) { + s = b >> 9; + a->code_buffer >>= s; + a->num_bits -= s; + return b & 511; + } + return stbi__zhuffman_decode_slowpath(a, z); +} + +static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes +{ + char *q; + unsigned int cur, limit, old_limit; + z->zout = zout; + if (!z->z_expandable) return stbi__err("output buffer limit", "Corrupt PNG"); + cur = (unsigned int) (z->zout - z->zout_start); + limit = old_limit = (unsigned) (z->zout_end - z->zout_start); + if (UINT_MAX - cur < (unsigned) n) return stbi__err("outofmem", "Out of memory"); + while (cur + n > limit) { + if (limit > UINT_MAX / 2) return stbi__err("outofmem", "Out of memory"); + limit *= 2; + } + q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); + STBI_NOTUSED(old_limit); + if (q == NULL) return stbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static const int stbi__zlength_base[31] = { + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, + 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, + 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; + +static const int stbi__zlength_extra[31] = + {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 0, 0}; + +static const int stbi__zdist_base[32] = {1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, + 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, + 24577, 0, 0}; + +static const int stbi__zdist_extra[32] = + {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + +static int stbi__parse_huffman_block(stbi__zbuf *a) { + char *zout = a->zout; + for (;;) { + int z = stbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return stbi__err("bad huffman code", "Corrupt PNG"); // error in huffman codes + if (zout >= a->zout_end) { + if (!stbi__zexpand(a, zout, 1)) return 0; + zout = a->zout; + } + *zout++ = (char) z; + } else { + stbi_uc *p; + int len, dist; + if (z == 256) { + a->zout = zout; + if (a->hit_zeof_once && a->num_bits < 16) { + // The first time we hit zeof, we inserted 16 extra zero bits into our bit + // buffer so the decoder can just do its speculative decoding. But if we + // actually consumed any of those bits (which is the case when num_bits < 16), + // the stream actually read past the end so it is malformed. + return stbi__err("unexpected end", "Corrupt PNG"); + } + return 1; + } + if (z >= 286) + return stbi__err("bad huffman code", + "Corrupt PNG"); // per DEFLATE, length codes 286 and 287 must not appear in compressed data + z -= 257; + len = stbi__zlength_base[z]; + if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); + z = stbi__zhuffman_decode(a, &a->z_distance); + if (z < 0 || z >= 30) + return stbi__err("bad huffman code", + "Corrupt PNG"); // per DEFLATE, distance codes 30 and 31 must not appear in compressed data + dist = stbi__zdist_base[z]; + if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return stbi__err("bad dist", "Corrupt PNG"); + if (len > a->zout_end - zout) { + if (!stbi__zexpand(a, zout, len)) return 0; + zout = a->zout; + } + p = (stbi_uc *) (zout - dist); + if (dist == 1) { // run of one byte; common in images. + stbi_uc v = *p; + if (len) { do *zout++ = v; while (--len); } + } else { + if (len) { do *zout++ = *p++; while (--len); } + } + } + } +} + +static int stbi__compute_huffman_codes(stbi__zbuf *a) { + static const stbi_uc length_dezigzag[19] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; + stbi__zhuffman z_codelength; + stbi_uc lencodes[286 + 32 + 137];//padding for maximum single op + stbi_uc codelength_sizes[19]; + int i, n; + + int hlit = stbi__zreceive(a, 5) + 257; + int hdist = stbi__zreceive(a, 5) + 1; + int hclen = stbi__zreceive(a, 4) + 4; + int ntot = hlit + hdist; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i = 0; i < hclen; ++i) { + int s = stbi__zreceive(a, 3); + codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + } + if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < ntot) { + int c = stbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); + if (c < 16) + lencodes[n++] = (stbi_uc) c; + else { + stbi_uc fill = 0; + if (c == 16) { + c = stbi__zreceive(a, 2) + 3; + if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); + fill = lencodes[n - 1]; + } else if (c == 17) { + c = stbi__zreceive(a, 3) + 3; + } else if (c == 18) { + c = stbi__zreceive(a, 7) + 11; + } else { + return stbi__err("bad codelengths", "Corrupt PNG"); + } + if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); + memset(lencodes + n, fill, c); + n += c; + } + } + if (n != ntot) return stbi__err("bad codelengths", "Corrupt PNG"); + if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, lencodes + hlit, hdist)) return 0; + return 1; +} + +static int stbi__parse_uncompressed_block(stbi__zbuf *a) { + stbi_uc header[4]; + int len, nlen, k; + if (a->num_bits & 7) + stbi__zreceive(a, a->num_bits & 7); // discard + // drain the bit-packed data into header + k = 0; + while (a->num_bits > 0) { + header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check + a->code_buffer >>= 8; + a->num_bits -= 8; + } + if (a->num_bits < 0) return stbi__err("zlib corrupt", "Corrupt PNG"); + // now fill header the normal way + while (k < 4) + header[k++] = stbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt", "Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer", "Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!stbi__zexpand(a, a->zout, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int stbi__parse_zlib_header(stbi__zbuf *a) { + int cmf = stbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = stbi__zget8(a); + if (stbi__zeof(a)) return stbi__err("bad zlib header", "Corrupt PNG"); // zlib spec + if ((cmf * 256 + flg) % 31 != 0) return stbi__err("bad zlib header", "Corrupt PNG"); // zlib spec + if (flg & 32) return stbi__err("no preset dict", "Corrupt PNG"); // preset dictionary not allowed in png + if (cm != 8) return stbi__err("bad compression", "Corrupt PNG"); // DEFLATE required for png + // window = 1 << (8 + cinfo)... but who cares, we fully buffer output + return 1; +} + +static const stbi_uc stbi__zdefault_length[STBI__ZNSYMS] = + { + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, + 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8 + }; +static const stbi_uc stbi__zdefault_distance[32] = + { + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 + }; + +/* +Init algorithm: +{ + int i; // use <= to match clearly with spec + for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + + for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; +} +*/ + +static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) { + int final, type; + if (parse_header) + if (!stbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + a->hit_zeof_once = 0; + do { + final = stbi__zreceive(a, 1); + type = stbi__zreceive(a, 2); + if (type == 0) { + if (!stbi__parse_uncompressed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + // use fixed code lengths + if (!stbi__zbuild_huffman(&a->z_length, stbi__zdefault_length, STBI__ZNSYMS)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + } else { + if (!stbi__compute_huffman_codes(a)) return 0; + } + if (!stbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) { + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + + return stbi__parse_zlib(a, parse_header); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) { + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) { + return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, + int parse_header) { + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) { + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) { + stbi__zbuf a; + char *p = (char *) stbi__malloc(16384); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, 16384, 1, 0)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) { + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +#endif + +// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 +// simple implementation +// - only 8-bit samples +// - no CRC checking +// - allocates lots of intermediate memory +// - avoids problem of streaming data between subsystems +// - avoids explicit window management +// performance +// - uses stb_zlib, a PD zlib implementation with fast huffman decoding + +#ifndef STBI_NO_PNG +typedef struct { + stbi__uint32 length; + stbi__uint32 type; +} stbi__pngchunk; + +static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) { + stbi__pngchunk c; + c.length = stbi__get32be(s); + c.type = stbi__get32be(s); + return c; +} + +static int stbi__check_png_header(stbi__context *s) { + static const stbi_uc png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10}; + int i; + for (i = 0; i < 8; ++i) + if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig", "Not a PNG"); + return 1; +} + +typedef struct { + stbi__context *s; + stbi_uc *idata, *expanded, *out; + int depth; +} stbi__png; + + +enum { + STBI__F_none = 0, + STBI__F_sub = 1, + STBI__F_up = 2, + STBI__F_avg = 3, + STBI__F_paeth = 4, + // synthetic filter used for first scanline to avoid needing a dummy row of 0s + STBI__F_avg_first +}; + +static stbi_uc first_row_filter[5] = + { + STBI__F_none, + STBI__F_sub, + STBI__F_none, + STBI__F_avg_first, + STBI__F_sub // Paeth with b=c=0 turns out to be equivalent to sub + }; + +static int stbi__paeth(int a, int b, int c) { + // This formulation looks very different from the reference in the PNG spec, but is + // actually equivalent and has favorable data dependencies and admits straightforward + // generation of branch-free code, which helps performance significantly. + int thresh = c * 3 - (a + b); + int lo = a < b ? a : b; + int hi = a < b ? b : a; + int t0 = (hi <= thresh) ? lo : c; + int t1 = (thresh <= lo) ? hi : t0; + return t1; +} + +static const stbi_uc stbi__depth_scale_table[9] = {0, 0xff, 0x55, 0, 0x11, 0, 0, 0, 0x01}; + +// adds an extra all-255 alpha channel +// dest == src is legal +// img_n must be 1 or 3 +static void stbi__create_png_alpha_expand8(stbi_uc *dest, stbi_uc *src, stbi__uint32 x, int img_n) { + int i; + // must process data backwards since we allow dest==src + if (img_n == 1) { + for (i = x - 1; i >= 0; --i) { + dest[i * 2 + 1] = 255; + dest[i * 2 + 0] = src[i]; + } + } else { + STBI_ASSERT(img_n == 3); + for (i = x - 1; i >= 0; --i) { + dest[i * 4 + 3] = 255; + dest[i * 4 + 2] = src[i * 3 + 2]; + dest[i * 4 + 1] = src[i * 3 + 1]; + dest[i * 4 + 0] = src[i * 3 + 0]; + } + } +} + +// create the png data from post-deflated data +static int +stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, + int depth, int color) { + int bytes = (depth == 16 ? 2 : 1); + stbi__context *s = a->s; + stbi__uint32 i, j, stride = x * out_n * bytes; + stbi__uint32 img_len, img_width_bytes; + stbi_uc *filter_buf; + int all_ok = 1; + int k; + int img_n = s->img_n; // copy it into a local for later + + int output_bytes = out_n * bytes; + int filter_bytes = img_n * bytes; + int width = x; + + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n + 1); + a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); // extra bytes to write off the end into + if (!a->out) return stbi__err("outofmem", "Out of memory"); + + // note: error exits here don't need to clean up a->out individually, + // stbi__do_png always does on error. + if (!stbi__mad3sizes_valid(img_n, x, depth, 7)) return stbi__err("too large", "Corrupt PNG"); + img_width_bytes = (((img_n * x * depth) + 7) >> 3); + if (!stbi__mad2sizes_valid(img_width_bytes, y, img_width_bytes)) return stbi__err("too large", "Corrupt PNG"); + img_len = (img_width_bytes + 1) * y; + + // we used to check for exact match between raw_len and img_len on non-interlaced PNGs, + // but issue #276 reported a PNG in the wild that had extra data at the end (all zeros), + // so just check for raw_len < img_len always. + if (raw_len < img_len) return stbi__err("not enough pixels", "Corrupt PNG"); + + // Allocate two scan lines worth of filter workspace buffer. + filter_buf = (stbi_uc *) stbi__malloc_mad2(img_width_bytes, 2, 0); + if (!filter_buf) return stbi__err("outofmem", "Out of memory"); + + // Filtering for low-bit-depth images + if (depth < 8) { + filter_bytes = 1; + width = img_width_bytes; + } + + for (j = 0; j < y; ++j) { + // cur/prior filter buffers alternate + stbi_uc *cur = filter_buf + (j & 1) * img_width_bytes; + stbi_uc *prior = filter_buf + (~j & 1) * img_width_bytes; + stbi_uc *dest = a->out + stride * j; + int nk = width * filter_bytes; + int filter = *raw++; + + // check filter type + if (filter > 4) { + all_ok = stbi__err("invalid filter", "Corrupt PNG"); + break; + } + + // if first row, use special filter that doesn't sample previous row + if (j == 0) filter = first_row_filter[filter]; + + // perform actual filtering + switch (filter) { + case STBI__F_none: + memcpy(cur, raw, nk); + break; + case STBI__F_sub: + memcpy(cur, raw, filter_bytes); + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + cur[k - filter_bytes]); + break; + case STBI__F_up: + for (k = 0; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + prior[k]); + break; + case STBI__F_avg: + for (k = 0; k < filter_bytes; ++k) + cur[k] = STBI__BYTECAST(raw[k] + (prior[k] >> 1)); + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k - filter_bytes]) >> 1)); + break; + case STBI__F_paeth: + for (k = 0; k < filter_bytes; ++k) + cur[k] = STBI__BYTECAST(raw[k] + prior[k]); // prior[k] == stbi__paeth(0,prior[k],0) + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST( + raw[k] + stbi__paeth(cur[k - filter_bytes], prior[k], prior[k - filter_bytes])); + break; + case STBI__F_avg_first: + memcpy(cur, raw, filter_bytes); + for (k = filter_bytes; k < nk; ++k) + cur[k] = STBI__BYTECAST(raw[k] + (cur[k - filter_bytes] >> 1)); + break; + } + + raw += nk; + + // expand decoded bits in cur to dest, also adding an extra alpha channel if desired + if (depth < 8) { + stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range + stbi_uc *in = cur; + stbi_uc *out = dest; + stbi_uc inb = 0; + stbi__uint32 nsmp = x * img_n; + + // expand bits to bytes first + if (depth == 4) { + for (i = 0; i < nsmp; ++i) { + if ((i & 1) == 0) inb = *in++; + *out++ = scale * (inb >> 4); + inb <<= 4; + } + } else if (depth == 2) { + for (i = 0; i < nsmp; ++i) { + if ((i & 3) == 0) inb = *in++; + *out++ = scale * (inb >> 6); + inb <<= 2; + } + } else { + STBI_ASSERT(depth == 1); + for (i = 0; i < nsmp; ++i) { + if ((i & 7) == 0) inb = *in++; + *out++ = scale * (inb >> 7); + inb <<= 1; + } + } + + // insert alpha=255 values if desired + if (img_n != out_n) + stbi__create_png_alpha_expand8(dest, dest, x, img_n); + } else if (depth == 8) { + if (img_n == out_n) + memcpy(dest, cur, x * img_n); + else + stbi__create_png_alpha_expand8(dest, cur, x, img_n); + } else if (depth == 16) { + // convert the image data from big-endian to platform-native + stbi__uint16 *dest16 = (stbi__uint16 *) dest; + stbi__uint32 nsmp = x * img_n; + + if (img_n == out_n) { + for (i = 0; i < nsmp; ++i, ++dest16, cur += 2) + *dest16 = (cur[0] << 8) | cur[1]; + } else { + STBI_ASSERT(img_n + 1 == out_n); + if (img_n == 1) { + for (i = 0; i < x; ++i, dest16 += 2, cur += 2) { + dest16[0] = (cur[0] << 8) | cur[1]; + dest16[1] = 0xffff; + } + } else { + STBI_ASSERT(img_n == 3); + for (i = 0; i < x; ++i, dest16 += 4, cur += 6) { + dest16[0] = (cur[0] << 8) | cur[1]; + dest16[1] = (cur[2] << 8) | cur[3]; + dest16[2] = (cur[4] << 8) | cur[5]; + dest16[3] = 0xffff; + } + } + } + } + } + + STBI_FREE(filter_buf); + if (!all_ok) return 0; + + return 1; +} + +static int +stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, + int interlaced) { + int bytes = (depth == 16 ? 2 : 1); + int out_bytes = out_n * bytes; + stbi_uc *final; + int p; + if (!interlaced) + return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + + // de-interlacing + final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); + if (!final) return stbi__err("outofmem", "Out of memory"); + for (p = 0; p < 7; ++p) { + int xorig[] = {0, 4, 0, 2, 0, 1, 0}; + int yorig[] = {0, 0, 4, 0, 2, 0, 1}; + int xspc[] = {8, 8, 4, 4, 2, 2, 1}; + int yspc[] = {8, 8, 8, 4, 4, 2, 2}; + int i, j, x, y; + // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 + x = (a->s->img_x - xorig[p] + xspc[p] - 1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p] - 1) / yspc[p]; + if (x && y) { + stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + STBI_FREE(final); + return 0; + } + for (j = 0; j < y; ++j) { + for (i = 0; i < x; ++i) { + int out_y = j * yspc[p] + yorig[p]; + int out_x = i * xspc[p] + xorig[p]; + memcpy(final + out_y * a->s->img_x * out_bytes + out_x * out_bytes, + a->out + (j * x + i) * out_bytes, out_bytes); + } + } + STBI_FREE(a->out); + image_data += img_len; + image_data_len -= img_len; + } + } + a->out = final; + + return 1; +} + +static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) { + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + // compute color-based transparency, assuming we've + // already got 255 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) { + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi__uint16 *p = (stbi__uint16 *) z->out; + + // compute color-based transparency, assuming we've + // already got 65535 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 65535); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) { + stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + stbi_uc *p, *temp_out, *orig = a->out; + + p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + // between here and free(out) below, exitting would leak + temp_out = p; + + if (pal_img_n == 3) { + for (i = 0; i < pixel_count; ++i) { + int n = orig[i] * 4; + p[0] = palette[n]; + p[1] = palette[n + 1]; + p[2] = palette[n + 2]; + p += 3; + } + } else { + for (i = 0; i < pixel_count; ++i) { + int n = orig[i] * 4; + p[0] = palette[n]; + p[1] = palette[n + 1]; + p[2] = palette[n + 2]; + p[3] = palette[n + 3]; + p += 4; + } + } + STBI_FREE(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +static int stbi__unpremultiply_on_load_global = 0; +static int stbi__de_iphone_flag_global = 0; + +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) { + stbi__unpremultiply_on_load_global = flag_true_if_should_unpremultiply; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) { + stbi__de_iphone_flag_global = flag_true_if_should_convert; +} + +#ifndef STBI_THREAD_LOCAL +#define stbi__unpremultiply_on_load stbi__unpremultiply_on_load_global +#define stbi__de_iphone_flag stbi__de_iphone_flag_global +#else +static STBI_THREAD_LOCAL int stbi__unpremultiply_on_load_local, stbi__unpremultiply_on_load_set; +static STBI_THREAD_LOCAL int stbi__de_iphone_flag_local, stbi__de_iphone_flag_set; + +STBIDEF void stbi_set_unpremultiply_on_load_thread(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load_local = flag_true_if_should_unpremultiply; + stbi__unpremultiply_on_load_set = 1; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb_thread(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag_local = flag_true_if_should_convert; + stbi__de_iphone_flag_set = 1; +} + +#define stbi__unpremultiply_on_load (stbi__unpremultiply_on_load_set \ + ? stbi__unpremultiply_on_load_local \ + : stbi__unpremultiply_on_load_global) +#define stbi__de_iphone_flag (stbi__de_iphone_flag_set \ + ? stbi__de_iphone_flag_local \ + : stbi__de_iphone_flag_global) +#endif // STBI_THREAD_LOCAL + +static void stbi__de_iphone(stbi__png *z) { + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + if (s->img_out_n == 3) { // convert bgr to rgb + for (i = 0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 3; + } + } else { + STBI_ASSERT(s->img_out_n == 4); + if (stbi__unpremultiply_on_load) { + // convert bgr to rgb and unpremultiply + for (i = 0; i < pixel_count; ++i) { + stbi_uc a = p[3]; + stbi_uc t = p[0]; + if (a) { + stbi_uc half = a / 2; + p[0] = (p[2] * 255 + half) / a; + p[1] = (p[1] * 255 + half) / a; + p[2] = (t * 255 + half) / a; + } else { + p[0] = p[2]; + p[2] = t; + } + p += 4; + } + } else { + // convert bgr to rgb + for (i = 0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 4; + } + } + } +} + +#define STBI__PNG_TYPE(a, b, c, d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) + +static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) { + stbi_uc palette[1024], pal_img_n = 0; + stbi_uc has_trans = 0, tc[3] = {0}; + stbi__uint16 tc16[3]; + stbi__uint32 ioff = 0, idata_limit = 0, i, pal_len = 0; + int first = 1, k, interlace = 0, color = 0, is_iphone = 0; + stbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!stbi__check_png_header(s)) return 0; + + if (scan == STBI__SCAN_type) return 1; + + for (;;) { + stbi__pngchunk c = stbi__get_chunk_header(s); + switch (c.type) { + case STBI__PNG_TYPE('C', 'g', 'B', 'I'): + is_iphone = 1; + stbi__skip(s, c.length); + break; + case STBI__PNG_TYPE('I', 'H', 'D', 'R'): { + int comp, filter; + if (!first) return stbi__err("multiple IHDR", "Corrupt PNG"); + first = 0; + if (c.length != 13) return stbi__err("bad IHDR len", "Corrupt PNG"); + s->img_x = stbi__get32be(s); + s->img_y = stbi__get32be(s); + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__err("too large", "Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__err("too large", "Very large image (corrupt?)"); + z->depth = stbi__get8(s); + if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) + return stbi__err("1/2/4/8/16-bit only", "PNG not supported: 1/2/4/8/16-bit only"); + color = stbi__get8(s); + if (color > 6) return stbi__err("bad ctype", "Corrupt PNG"); + if (color == 3 && z->depth == 16) return stbi__err("bad ctype", "Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype", "Corrupt PNG"); + comp = stbi__get8(s); + if (comp) return stbi__err("bad comp method", "Corrupt PNG"); + filter = stbi__get8(s); + if (filter) return stbi__err("bad filter method", "Corrupt PNG"); + interlace = stbi__get8(s); + if (interlace > 1) return stbi__err("bad interlace method", "Corrupt PNG"); + if (!s->img_x || !s->img_y) return stbi__err("0-pixel image", "Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) + return stbi__err("too large", "Image too large to decode"); + } else { + // if paletted, then pal_n is our final components, and + // img_n is # components to decompress/filter. + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large", "Corrupt PNG"); + } + // even with SCAN_header, have to scan to see if we have a tRNS + break; + } + + case STBI__PNG_TYPE('P', 'L', 'T', 'E'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256 * 3) return stbi__err("invalid PLTE", "Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return stbi__err("invalid PLTE", "Corrupt PNG"); + for (i = 0; i < pal_len; ++i) { + palette[i * 4 + 0] = stbi__get8(s); + palette[i * 4 + 1] = stbi__get8(s); + palette[i * 4 + 2] = stbi__get8(s); + palette[i * 4 + 3] = 255; + } + break; + } + + case STBI__PNG_TYPE('t', 'R', 'N', 'S'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return stbi__err("tRNS after IDAT", "Corrupt PNG"); + if (pal_img_n) { + if (scan == STBI__SCAN_header) { + s->img_n = 4; + return 1; + } + if (pal_len == 0) return stbi__err("tRNS before PLTE", "Corrupt PNG"); + if (c.length > pal_len) return stbi__err("bad tRNS len", "Corrupt PNG"); + pal_img_n = 4; + for (i = 0; i < c.length; ++i) + palette[i * 4 + 3] = stbi__get8(s); + } else { + if (!(s->img_n & 1)) return stbi__err("tRNS with alpha", "Corrupt PNG"); + if (c.length != (stbi__uint32) s->img_n * 2) return stbi__err("bad tRNS len", "Corrupt PNG"); + has_trans = 1; + // non-paletted with tRNS = constant alpha. if header-scanning, we can stop now. + if (scan == STBI__SCAN_header) { + ++s->img_n; + return 1; + } + if (z->depth == 16) { + for (k = 0; k < s->img_n; ++k) + tc16[k] = (stbi__uint16) stbi__get16be(s); // copy the values as-is + } else { + for (k = 0; k < s->img_n; ++k) + tc[k] = (stbi_uc) (stbi__get16be(s) & 255) * + stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger + } + } + break; + } + + case STBI__PNG_TYPE('I', 'D', 'A', 'T'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return stbi__err("no PLTE", "Corrupt PNG"); + if (scan == STBI__SCAN_header) { + // header scan definitely stops at first IDAT + if (pal_img_n) + s->img_n = pal_img_n; + return 1; + } + if (c.length > (1u << 30)) return stbi__err("IDAT size limit", "IDAT section larger than 2^30 bytes"); + if ((int) (ioff + c.length) < (int) ioff) return 0; + if (ioff + c.length > idata_limit) { + stbi__uint32 idata_limit_old = idata_limit; + stbi_uc *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + STBI_NOTUSED(idata_limit_old); + p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!stbi__getn(s, z->idata + ioff, c.length)) return stbi__err("outofdata", "Corrupt PNG"); + ioff += c.length; + break; + } + + case STBI__PNG_TYPE('I', 'E', 'N', 'D'): { + stbi__uint32 raw_len, bpl; + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (scan != STBI__SCAN_load) return 1; + if (z->idata == NULL) return stbi__err("no IDAT", "Corrupt PNG"); + // initial guess for decoded data size to avoid unnecessary reallocs + bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component + raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; + z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, + (int *) &raw_len, !is_iphone); + if (z->expanded == NULL) return 0; // zlib should set error + STBI_FREE(z->idata); + z->idata = NULL; + if ((req_comp == s->img_n + 1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n + 1; + else + s->img_out_n = s->img_n; + if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) + return 0; + if (has_trans) { + if (z->depth == 16) { + if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + } else { + if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + } + } + if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) + stbi__de_iphone(z); + if (pal_img_n) { + // pal_img_n == 3 or 4 + s->img_n = pal_img_n; // record the actual colors we had + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } else if (has_trans) { + // non-paletted image with tRNS -> source image has (constant) alpha + ++s->img_n; + } + STBI_FREE(z->expanded); + z->expanded = NULL; + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + return 1; + } + + default: + // if critical, fail + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { +#ifndef STBI_NO_FAILURE_STRINGS + // not threadsafe + static char invalid_chunk[] = "XXXX PNG chunk not known"; + invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); + invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); + invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); + invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); +#endif + return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); + } + stbi__skip(s, static_cast(c.length)); + break; + } + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + } +} + +static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) { + void *result = NULL; + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth <= 8) + ri->bits_per_channel = 8; + else if (p->depth == 16) + ri->bits_per_channel = 16; + else + return stbi__errpuc("bad bits_per_channel", "PNG not supported: unsupported color depth"); + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + if (ri->bits_per_channel == 8) + result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, + p->s->img_y); + else + result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, + p->s->img_y); + p->s->img_out_n = req_comp; + if (result == nullptr) return result; + } + *x = static_cast(p->s->img_x); + *y = static_cast(p->s->img_y); + if (n) *n = p->s->img_n; + } + STBI_FREE(p->out); + p->out = nullptr; + STBI_FREE(p->expanded); + p->expanded = nullptr; + STBI_FREE(p->idata); + p->idata = nullptr; + + return result; +} + +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) { + stbi__png p; + p.s = s; + return stbi__do_png(&p, x, y, comp, req_comp, ri); +} + +static int stbi__png_test(stbi__context *s) { + int r; + r = stbi__check_png_header(s); + stbi__rewind(s); + return r; +} + +static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) { + if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { + stbi__rewind(p->s); + return 0; + } + if (x) *x = static_cast(p->s->img_x); + if (y) *y = static_cast(p->s->img_y); + if (comp) *comp = p->s->img_n; + return 1; +} + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) { + stbi__png p; + p.s = s; + return stbi__png_info_raw(&p, x, y, comp); +} + +static int stbi__png_is16(stbi__context *s) { + stbi__png p; + p.s = s; + if (!stbi__png_info_raw(&p, nullptr, nullptr, nullptr)) + return 0; + if (p.depth != 16) { + stbi__rewind(p.s); + return 0; + } + return 1; +} + +#endif + +// Microsoft/Windows BMP image + +#ifndef STBI_NO_BMP +static int stbi__bmp_test_raw(stbi__context *s) +{ + int r; + int sz; + if (stbi__get8(s) != 'B') return 0; + if (stbi__get8(s) != 'M') return 0; + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + stbi__get32le(s); // discard data offset + sz = stbi__get32le(s); + r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); + return r; +} + +static int stbi__bmp_test(stbi__context *s) +{ + int r = stbi__bmp_test_raw(s); + stbi__rewind(s); + return r; +} + + +// returns 0..31 for the highest set bit +static int stbi__high_bit(unsigned int z) +{ + int n=0; + if (z == 0) return -1; + if (z >= 0x10000) { n += 16; z >>= 16; } + if (z >= 0x00100) { n += 8; z >>= 8; } + if (z >= 0x00010) { n += 4; z >>= 4; } + if (z >= 0x00004) { n += 2; z >>= 2; } + if (z >= 0x00002) { n += 1;/* >>= 1;*/ } + return n; +} + +static int stbi__bitcount(unsigned int a) +{ + a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 + a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 + a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits + a = (a + (a >> 8)); // max 16 per 8 bits + a = (a + (a >> 16)); // max 32 per 8 bits + return a & 0xff; +} + +// extract an arbitrarily-aligned N-bit value (N=bits) +// from v, and then make it 8-bits long and fractionally +// extend it to full full range. +static int stbi__shiftsigned(unsigned int v, int shift, int bits) +{ + static unsigned int mul_table[9] = { + 0, + 0xff/*0b11111111*/, 0x55/*0b01010101*/, 0x49/*0b01001001*/, 0x11/*0b00010001*/, + 0x21/*0b00100001*/, 0x41/*0b01000001*/, 0x81/*0b10000001*/, 0x01/*0b00000001*/, + }; + static unsigned int shift_table[9] = { + 0, 0,0,1,0,2,4,6,0, + }; + if (shift < 0) + v <<= -shift; + else + v >>= shift; + STBI_ASSERT(v < 256); + v >>= (8-bits); + STBI_ASSERT(bits >= 0 && bits <= 8); + return (int) ((unsigned) v * mul_table[bits]) >> shift_table[bits]; +} + +typedef struct +{ + int bpp, offset, hsz; + unsigned int mr,mg,mb,ma, all_a; + int extra_read; +} stbi__bmp_data; + +static int stbi__bmp_set_mask_defaults(stbi__bmp_data *info, int compress) +{ + // BI_BITFIELDS specifies masks explicitly, don't override + if (compress == 3) + return 1; + + if (compress == 0) { + if (info->bpp == 16) { + info->mr = 31u << 10; + info->mg = 31u << 5; + info->mb = 31u << 0; + } else if (info->bpp == 32) { + info->mr = 0xffu << 16; + info->mg = 0xffu << 8; + info->mb = 0xffu << 0; + info->ma = 0xffu << 24; + info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 + } else { + // otherwise, use defaults, which is all-0 + info->mr = info->mg = info->mb = info->ma = 0; + } + return 1; + } + return 0; // error +} + +static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) +{ + int hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + info->offset = stbi__get32le(s); + info->hsz = hsz = stbi__get32le(s); + info->mr = info->mg = info->mb = info->ma = 0; + info->extra_read = 14; + + if (info->offset < 0) return stbi__errpuc("bad BMP", "bad BMP"); + + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); + if (hsz == 12) { + s->img_x = stbi__get16le(s); + s->img_y = stbi__get16le(s); + } else { + s->img_x = stbi__get32le(s); + s->img_y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); + info->bpp = stbi__get16le(s); + if (hsz != 12) { + int compress = stbi__get32le(s); + if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); + if (compress >= 4) return stbi__errpuc("BMP JPEG/PNG", "BMP type not supported: unsupported compression"); // this includes PNG/JPEG modes + if (compress == 3 && info->bpp != 16 && info->bpp != 32) return stbi__errpuc("bad BMP", "bad BMP"); // bitfields requires 16 or 32 bits/pixel + stbi__get32le(s); // discard sizeof + stbi__get32le(s); // discard hres + stbi__get32le(s); // discard vres + stbi__get32le(s); // discard colorsused + stbi__get32le(s); // discard max important + if (hsz == 40 || hsz == 56) { + if (hsz == 56) { + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + } + if (info->bpp == 16 || info->bpp == 32) { + if (compress == 0) { + stbi__bmp_set_mask_defaults(info, compress); + } else if (compress == 3) { + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->extra_read += 12; + // not documented, but generated by photoshop and handled by mspaint + if (info->mr == info->mg && info->mg == info->mb) { + // ?!?!? + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else { + // V4/V5 header + int i; + if (hsz != 108 && hsz != 124) + return stbi__errpuc("bad BMP", "bad BMP"); + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->ma = stbi__get32le(s); + if (compress != 3) // override mr/mg/mb unless in BI_BITFIELDS mode, as per docs + stbi__bmp_set_mask_defaults(info, compress); + stbi__get32le(s); // discard color space + for (i=0; i < 12; ++i) + stbi__get32le(s); // discard color space parameters + if (hsz == 124) { + stbi__get32le(s); // discard rendering intent + stbi__get32le(s); // discard offset of profile data + stbi__get32le(s); // discard size of profile data + stbi__get32le(s); // discard reserved + } + } + } + return (void *) 1; +} + + +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + unsigned int mr=0,mg=0,mb=0,ma=0, all_a; + stbi_uc pal[256][4]; + int psize=0,i,j,width; + int flip_vertically, pad, target; + stbi__bmp_data info; + STBI_NOTUSED(ri); + + info.all_a = 255; + if (stbi__bmp_parse_header(s, &info) == NULL) + return NULL; // error code already set + + flip_vertically = ((int) s->img_y) > 0; + s->img_y = abs((int) s->img_y); + + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + mr = info.mr; + mg = info.mg; + mb = info.mb; + ma = info.ma; + all_a = info.all_a; + + if (info.hsz == 12) { + if (info.bpp < 24) + psize = (info.offset - info.extra_read - 24) / 3; + } else { + if (info.bpp < 16) + psize = (info.offset - info.extra_read - info.hsz) >> 2; + } + if (psize == 0) { + // accept some number of extra bytes after the header, but if the offset points either to before + // the header ends or implies a large amount of extra data, reject the file as malformed + int bytes_read_so_far = s->callback_already_read + (int)(s->img_buffer - s->img_buffer_original); + int header_limit = 1024; // max we actually read is below 256 bytes currently. + int extra_data_limit = 256*4; // what ordinarily goes here is a palette; 256 entries*4 bytes is its max size. + if (bytes_read_so_far <= 0 || bytes_read_so_far > header_limit) { + return stbi__errpuc("bad header", "Corrupt BMP"); + } + // we established that bytes_read_so_far is positive and sensible. + // the first half of this test rejects offsets that are either too small positives, or + // negative, and guarantees that info.offset >= bytes_read_so_far > 0. this in turn + // ensures the number computed in the second half of the test can't overflow. + if (info.offset < bytes_read_so_far || info.offset - bytes_read_so_far > extra_data_limit) { + return stbi__errpuc("bad offset", "Corrupt BMP"); + } else { + stbi__skip(s, info.offset - bytes_read_so_far); + } + } + + if (info.bpp == 24 && ma == 0xff000000) + s->img_n = 3; + else + s->img_n = ma ? 4 : 3; + if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 + target = req_comp; + else + target = s->img_n; // if they want monochrome, we'll post-convert + + // sanity-check size + if (!stbi__mad3sizes_valid(target, s->img_x, s->img_y, 0)) + return stbi__errpuc("too large", "Corrupt BMP"); + + out = (stbi_uc *) stbi__malloc_mad3(target, s->img_x, s->img_y, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (info.bpp < 16) { + int z=0; + if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } + for (i=0; i < psize; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + if (info.hsz != 12) stbi__get8(s); + pal[i][3] = 255; + } + stbi__skip(s, info.offset - info.extra_read - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); + if (info.bpp == 1) width = (s->img_x + 7) >> 3; + else if (info.bpp == 4) width = (s->img_x + 1) >> 1; + else if (info.bpp == 8) width = s->img_x; + else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } + pad = (-width)&3; + if (info.bpp == 1) { + for (j=0; j < (int) s->img_y; ++j) { + int bit_offset = 7, v = stbi__get8(s); + for (i=0; i < (int) s->img_x; ++i) { + int color = (v>>bit_offset)&0x1; + out[z++] = pal[color][0]; + out[z++] = pal[color][1]; + out[z++] = pal[color][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + if((--bit_offset) < 0) { + bit_offset = 7; + v = stbi__get8(s); + } + } + stbi__skip(s, pad); + } + } else { + for (j=0; j < (int) s->img_y; ++j) { + for (i=0; i < (int) s->img_x; i += 2) { + int v=stbi__get8(s),v2=0; + if (info.bpp == 4) { + v2 = v & 15; + v >>= 4; + } + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + v = (info.bpp == 8) ? stbi__get8(s) : v2; + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + } + stbi__skip(s, pad); + } + } + } else { + int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; + int z = 0; + int easy=0; + stbi__skip(s, info.offset - info.extra_read - info.hsz); + if (info.bpp == 24) width = 3 * s->img_x; + else if (info.bpp == 16) width = 2*s->img_x; + else /* bpp = 32 and pad = 0 */ width=0; + pad = (-width) & 3; + if (info.bpp == 24) { + easy = 1; + } else if (info.bpp == 32) { + if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) + easy = 2; + } + if (!easy) { + if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + // right shift amt to put high bit in position #7 + rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); + gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); + bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); + ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); + if (rcount > 8 || gcount > 8 || bcount > 8 || acount > 8) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + } + for (j=0; j < (int) s->img_y; ++j) { + if (easy) { + for (i=0; i < (int) s->img_x; ++i) { + unsigned char a; + out[z+2] = stbi__get8(s); + out[z+1] = stbi__get8(s); + out[z+0] = stbi__get8(s); + z += 3; + a = (easy == 2 ? stbi__get8(s) : 255); + all_a |= a; + if (target == 4) out[z++] = a; + } + } else { + int bpp = info.bpp; + for (i=0; i < (int) s->img_x; ++i) { + stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); + unsigned int a; + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); + a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); + all_a |= a; + if (target == 4) out[z++] = STBI__BYTECAST(a); + } + } + stbi__skip(s, pad); + } + } + + // if alpha channel is all 0s, replace with all 255s + if (target == 4 && all_a == 0) + for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) + out[i] = 255; + + if (flip_vertically) { + stbi_uc t; + for (j=0; j < (int) s->img_y>>1; ++j) { + stbi_uc *p1 = out + j *s->img_x*target; + stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; + for (i=0; i < (int) s->img_x*target; ++i) { + t = p1[i]; p1[i] = p2[i]; p2[i] = t; + } + } + } + + if (req_comp && req_comp != target) { + out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + return out; +} +#endif + +// Targa Truevision - TGA +// by Jonathan Dummer +#ifndef STBI_NO_TGA +// returns STBI_rgb or whatever, 0 on error +static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) +{ + // only RGB or RGBA (incl. 16bit) or grey allowed + if (is_rgb16) *is_rgb16 = 0; + switch(bits_per_pixel) { + case 8: return STBI_grey; + case 16: if(is_grey) return STBI_grey_alpha; + // fallthrough + case 15: if(is_rgb16) *is_rgb16 = 1; + return STBI_rgb; + case 24: // fallthrough + case 32: return bits_per_pixel/8; + default: return 0; + } +} + +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) +{ + int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; + int sz, tga_colormap_type; + stbi__get8(s); // discard Offset + tga_colormap_type = stbi__get8(s); // colormap type + if( tga_colormap_type > 1 ) { + stbi__rewind(s); + return 0; // only RGB or indexed allowed + } + tga_image_type = stbi__get8(s); // image type + if ( tga_colormap_type == 1 ) { // colormapped (paletted) image + if (tga_image_type != 1 && tga_image_type != 9) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip image x and y origin + tga_colormap_bpp = sz; + } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE + if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { + stbi__rewind(s); + return 0; // only RGB or grey allowed, +/- RLE + } + stbi__skip(s,9); // skip colormap specification and image x/y origin + tga_colormap_bpp = 0; + } + tga_w = stbi__get16le(s); + if( tga_w < 1 ) { + stbi__rewind(s); + return 0; // test width + } + tga_h = stbi__get16le(s); + if( tga_h < 1 ) { + stbi__rewind(s); + return 0; // test height + } + tga_bits_per_pixel = stbi__get8(s); // bits per pixel + stbi__get8(s); // ignore alpha bits + if (tga_colormap_bpp != 0) { + if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { + // when using a colormap, tga_bits_per_pixel is the size of the indexes + // I don't think anything but 8 or 16bit indexes makes sense + stbi__rewind(s); + return 0; + } + tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); + } else { + tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); + } + if(!tga_comp) { + stbi__rewind(s); + return 0; + } + if (x) *x = tga_w; + if (y) *y = tga_h; + if (comp) *comp = tga_comp; + return 1; // seems to have passed everything +} + +static int stbi__tga_test(stbi__context *s) +{ + int res = 0; + int sz, tga_color_type; + stbi__get8(s); // discard Offset + tga_color_type = stbi__get8(s); // color type + if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed + sz = stbi__get8(s); // image type + if ( tga_color_type == 1 ) { // colormapped (paletted) image + if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + stbi__skip(s,4); // skip image x and y origin + } else { // "normal" image w/o colormap + if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE + stbi__skip(s,9); // skip colormap specification and image x/y origin + } + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height + sz = stbi__get8(s); // bits per pixel + if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + + res = 1; // if we got this far, everything's good and we can return 1 instead of 0 + +errorEnd: + stbi__rewind(s); + return res; +} + +// read 16bit value and convert to 24bit RGB +static void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) +{ + stbi__uint16 px = (stbi__uint16)stbi__get16le(s); + stbi__uint16 fiveBitMask = 31; + // we have 3 channels with 5bits each + int r = (px >> 10) & fiveBitMask; + int g = (px >> 5) & fiveBitMask; + int b = px & fiveBitMask; + // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later + out[0] = (stbi_uc)((r * 255)/31); + out[1] = (stbi_uc)((g * 255)/31); + out[2] = (stbi_uc)((b * 255)/31); + + // some people claim that the most significant bit might be used for alpha + // (possibly if an alpha-bit is set in the "image descriptor byte") + // but that only made 16bit test images completely translucent.. + // so let's treat all 15 and 16bit TGAs as RGB with no alpha. +} + +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + // read in the TGA header stuff + int tga_offset = stbi__get8(s); + int tga_indexed = stbi__get8(s); + int tga_image_type = stbi__get8(s); + int tga_is_RLE = 0; + int tga_palette_start = stbi__get16le(s); + int tga_palette_len = stbi__get16le(s); + int tga_palette_bits = stbi__get8(s); + int tga_x_origin = stbi__get16le(s); + int tga_y_origin = stbi__get16le(s); + int tga_width = stbi__get16le(s); + int tga_height = stbi__get16le(s); + int tga_bits_per_pixel = stbi__get8(s); + int tga_comp, tga_rgb16=0; + int tga_inverted = stbi__get8(s); + // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) + // image data + unsigned char *tga_data; + unsigned char *tga_palette = NULL; + int i, j; + unsigned char raw_data[4] = {0}; + int RLE_count = 0; + int RLE_repeating = 0; + int read_next_pixel = 1; + STBI_NOTUSED(ri); + STBI_NOTUSED(tga_x_origin); // @TODO + STBI_NOTUSED(tga_y_origin); // @TODO + + if (tga_height > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (tga_width > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + // do a tiny bit of precessing + if ( tga_image_type >= 8 ) + { + tga_image_type -= 8; + tga_is_RLE = 1; + } + tga_inverted = 1 - ((tga_inverted >> 5) & 1); + + // If I'm paletted, then I'll use the number of bits from the palette + if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); + else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); + + if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency + return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); + + // tga info + *x = tga_width; + *y = tga_height; + if (comp) *comp = tga_comp; + + if (!stbi__mad3sizes_valid(tga_width, tga_height, tga_comp, 0)) + return stbi__errpuc("too large", "Corrupt TGA"); + + tga_data = (unsigned char*)stbi__malloc_mad3(tga_width, tga_height, tga_comp, 0); + if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); + + // skip to the data's starting position (offset usually = 0) + stbi__skip(s, tga_offset ); + + if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { + for (i=0; i < tga_height; ++i) { + int row = tga_inverted ? tga_height -i - 1 : i; + stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; + stbi__getn(s, tga_row, tga_width * tga_comp); + } + } else { + // do I need to load a palette? + if ( tga_indexed) + { + if (tga_palette_len == 0) { /* you have to have at least one entry! */ + STBI_FREE(tga_data); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + + // any data to skip? (offset usually = 0) + stbi__skip(s, tga_palette_start ); + // load the palette + tga_palette = (unsigned char*)stbi__malloc_mad2(tga_palette_len, tga_comp, 0); + if (!tga_palette) { + STBI_FREE(tga_data); + return stbi__errpuc("outofmem", "Out of memory"); + } + if (tga_rgb16) { + stbi_uc *pal_entry = tga_palette; + STBI_ASSERT(tga_comp == STBI_rgb); + for (i=0; i < tga_palette_len; ++i) { + stbi__tga_read_rgb16(s, pal_entry); + pal_entry += tga_comp; + } + } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { + STBI_FREE(tga_data); + STBI_FREE(tga_palette); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + } + // load the data + for (i=0; i < tga_width * tga_height; ++i) + { + // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? + if ( tga_is_RLE ) + { + if ( RLE_count == 0 ) + { + // yep, get the next byte as a RLE command + int RLE_cmd = stbi__get8(s); + RLE_count = 1 + (RLE_cmd & 127); + RLE_repeating = RLE_cmd >> 7; + read_next_pixel = 1; + } else if ( !RLE_repeating ) + { + read_next_pixel = 1; + } + } else + { + read_next_pixel = 1; + } + // OK, if I need to read a pixel, do it now + if ( read_next_pixel ) + { + // load however much data we did have + if ( tga_indexed ) + { + // read in index, then perform the lookup + int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); + if ( pal_idx >= tga_palette_len ) { + // invalid index + pal_idx = 0; + } + pal_idx *= tga_comp; + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = tga_palette[pal_idx+j]; + } + } else if(tga_rgb16) { + STBI_ASSERT(tga_comp == STBI_rgb); + stbi__tga_read_rgb16(s, raw_data); + } else { + // read in the data raw + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = stbi__get8(s); + } + } + // clear the reading flag for the next pixel + read_next_pixel = 0; + } // end of reading a pixel + + // copy data + for (j = 0; j < tga_comp; ++j) + tga_data[i*tga_comp+j] = raw_data[j]; + + // in case we're in RLE mode, keep counting down + --RLE_count; + } + // do I need to invert the image? + if ( tga_inverted ) + { + for (j = 0; j*2 < tga_height; ++j) + { + int index1 = j * tga_width * tga_comp; + int index2 = (tga_height - 1 - j) * tga_width * tga_comp; + for (i = tga_width * tga_comp; i > 0; --i) + { + unsigned char temp = tga_data[index1]; + tga_data[index1] = tga_data[index2]; + tga_data[index2] = temp; + ++index1; + ++index2; + } + } + } + // clear my palette, if I had one + if ( tga_palette != NULL ) + { + STBI_FREE( tga_palette ); + } + } + + // swap RGB - if the source data was RGB16, it already is in the right order + if (tga_comp >= 3 && !tga_rgb16) + { + unsigned char* tga_pixel = tga_data; + for (i=0; i < tga_width * tga_height; ++i) + { + unsigned char temp = tga_pixel[0]; + tga_pixel[0] = tga_pixel[2]; + tga_pixel[2] = temp; + tga_pixel += tga_comp; + } + } + + // convert to target component count + if (req_comp && req_comp != tga_comp) + tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); + + // the things I do to get rid of an error message, and yet keep + // Microsoft's C compilers happy... [8^( + tga_palette_start = tga_palette_len = tga_palette_bits = + tga_x_origin = tga_y_origin = 0; + STBI_NOTUSED(tga_palette_start); + // OK, done + return tga_data; +} +#endif + +// ************************************************************************************************* +// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s) +{ + int r = (stbi__get32be(s) == 0x38425053); + stbi__rewind(s); + return r; +} + +static int stbi__psd_decode_rle(stbi__context *s, stbi_uc *p, int pixelCount) +{ + int count, nleft, len; + + count = 0; + while ((nleft = pixelCount - count) > 0) { + len = stbi__get8(s); + if (len == 128) { + // No-op. + } else if (len < 128) { + // Copy next len+1 bytes literally. + len++; + if (len > nleft) return 0; // corrupt data + count += len; + while (len) { + *p = stbi__get8(s); + p += 4; + len--; + } + } else if (len > 128) { + stbi_uc val; + // Next -len+1 bytes in the dest are replicated from next source byte. + // (Interpret len as a negative 8-bit int.) + len = 257 - len; + if (len > nleft) return 0; // corrupt data + val = stbi__get8(s); + count += len; + while (len) { + *p = val; + p += 4; + len--; + } + } + } + + return 1; +} + +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + int pixelCount; + int channelCount, compression; + int channel, i; + int bitdepth; + int w,h; + stbi_uc *out; + STBI_NOTUSED(ri); + + // Check identifier + if (stbi__get32be(s) != 0x38425053) // "8BPS" + return stbi__errpuc("not PSD", "Corrupt PSD image"); + + // Check file type version. + if (stbi__get16be(s) != 1) + return stbi__errpuc("wrong version", "Unsupported version of PSD image"); + + // Skip 6 reserved bytes. + stbi__skip(s, 6 ); + + // Read the number of channels (R, G, B, A, etc). + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) + return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); + + // Read the rows and columns of the image. + h = stbi__get32be(s); + w = stbi__get32be(s); + + if (h > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (w > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + // Make sure the depth is 8 bits. + bitdepth = stbi__get16be(s); + if (bitdepth != 8 && bitdepth != 16) + return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); + + // Make sure the color mode is RGB. + // Valid options are: + // 0: Bitmap + // 1: Grayscale + // 2: Indexed color + // 3: RGB color + // 4: CMYK color + // 7: Multichannel + // 8: Duotone + // 9: Lab color + if (stbi__get16be(s) != 3) + return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); + + // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) + stbi__skip(s,stbi__get32be(s) ); + + // Skip the image resources. (resolution, pen tool paths, etc) + stbi__skip(s, stbi__get32be(s) ); + + // Skip the reserved data. + stbi__skip(s, stbi__get32be(s) ); + + // Find out if the data is compressed. + // Known values: + // 0: no compression + // 1: RLE compressed + compression = stbi__get16be(s); + if (compression > 1) + return stbi__errpuc("bad compression", "PSD has an unknown compression format"); + + // Check size + if (!stbi__mad3sizes_valid(4, w, h, 0)) + return stbi__errpuc("too large", "Corrupt PSD"); + + // Create the destination image. + + if (!compression && bitdepth == 16 && bpc == 16) { + out = (stbi_uc *) stbi__malloc_mad3(8, w, h, 0); + ri->bits_per_channel = 16; + } else + out = (stbi_uc *) stbi__malloc(4 * w*h); + + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + pixelCount = w*h; + + // Initialize the data to zero. + //memset( out, 0, pixelCount * 4 ); + + // Finally, the image data. + if (compression) { + // RLE as used by .PSD and .TIFF + // Loop until you get the number of unpacked bytes you are expecting: + // Read the next source byte into n. + // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. + // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. + // Else if n is 128, noop. + // Endloop + + // The RLE-compressed data is preceded by a 2-byte data count for each row in the data, + // which we're going to just skip. + stbi__skip(s, h * channelCount * 2 ); + + // Read the RLE data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out+channel; + if (channel >= channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++, p += 4) + *p = (channel == 3 ? 255 : 0); + } else { + // Read the RLE data. + if (!stbi__psd_decode_rle(s, p, pixelCount)) { + STBI_FREE(out); + return stbi__errpuc("corrupt", "bad RLE data"); + } + } + } + + } else { + // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) + // where each channel consists of an 8-bit (or 16-bit) value for each pixel in the image. + + // Read the data by channel. + for (channel = 0; channel < 4; channel++) { + if (channel >= channelCount) { + // Fill this channel with default data. + if (bitdepth == 16 && bpc == 16) { + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + stbi__uint16 val = channel == 3 ? 65535 : 0; + for (i = 0; i < pixelCount; i++, q += 4) + *q = val; + } else { + stbi_uc *p = out+channel; + stbi_uc val = channel == 3 ? 255 : 0; + for (i = 0; i < pixelCount; i++, p += 4) + *p = val; + } + } else { + if (ri->bits_per_channel == 16) { // output bpc + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + for (i = 0; i < pixelCount; i++, q += 4) + *q = (stbi__uint16) stbi__get16be(s); + } else { + stbi_uc *p = out+channel; + if (bitdepth == 16) { // input bpc + for (i = 0; i < pixelCount; i++, p += 4) + *p = (stbi_uc) (stbi__get16be(s) >> 8); + } else { + for (i = 0; i < pixelCount; i++, p += 4) + *p = stbi__get8(s); + } + } + } + } + } + + // remove weird white matte from PSD + if (channelCount >= 4) { + if (ri->bits_per_channel == 16) { + for (i=0; i < w*h; ++i) { + stbi__uint16 *pixel = (stbi__uint16 *) out + 4*i; + if (pixel[3] != 0 && pixel[3] != 65535) { + float a = pixel[3] / 65535.0f; + float ra = 1.0f / a; + float inv_a = 65535.0f * (1 - ra); + pixel[0] = (stbi__uint16) (pixel[0]*ra + inv_a); + pixel[1] = (stbi__uint16) (pixel[1]*ra + inv_a); + pixel[2] = (stbi__uint16) (pixel[2]*ra + inv_a); + } + } + } else { + for (i=0; i < w*h; ++i) { + unsigned char *pixel = out + 4*i; + if (pixel[3] != 0 && pixel[3] != 255) { + float a = pixel[3] / 255.0f; + float ra = 1.0f / a; + float inv_a = 255.0f * (1 - ra); + pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); + pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); + pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); + } + } + } + } + + // convert to desired output format + if (req_comp && req_comp != 4) { + if (ri->bits_per_channel == 16) + out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, 4, req_comp, w, h); + else + out = stbi__convert_format(out, 4, req_comp, w, h); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + if (comp) *comp = 4; + *y = h; + *x = w; + + return out; +} +#endif + +// ************************************************************************************************* +// Softimage PIC loader +// by Tom Seddon +// +// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format +// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ + +#ifndef STBI_NO_PIC +static int stbi__pic_is4(stbi__context *s,const char *str) +{ + int i; + for (i=0; i<4; ++i) + if (stbi__get8(s) != (stbi_uc)str[i]) + return 0; + + return 1; +} + +static int stbi__pic_test_core(stbi__context *s) +{ + int i; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) + return 0; + + for(i=0;i<84;++i) + stbi__get8(s); + + if (!stbi__pic_is4(s,"PICT")) + return 0; + + return 1; +} + +typedef struct +{ + stbi_uc size,type,channel; +} stbi__pic_packet; + +static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) +{ + int mask=0x80, i; + + for (i=0; i<4; ++i, mask>>=1) { + if (channel & mask) { + if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); + dest[i]=stbi__get8(s); + } + } + + return dest; +} + +static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) +{ + int mask=0x80,i; + + for (i=0;i<4; ++i, mask>>=1) + if (channel&mask) + dest[i]=src[i]; +} + +static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) +{ + int act_comp=0,num_packets=0,y,chained; + stbi__pic_packet packets[10]; + + // this will (should...) cater for even some bizarre stuff like having data + // for the same channel in multiple packets. + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return stbi__errpuc("bad format","too many packets"); + + packet = &packets[num_packets++]; + + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + + act_comp |= packet->channel; + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); + if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? + + for(y=0; ytype) { + default: + return stbi__errpuc("bad format","packet has bad compression type"); + + case 0: {//uncompressed + int x; + + for(x=0;xchannel,dest)) + return 0; + break; + } + + case 1://Pure RLE + { + int left=width, i; + + while (left>0) { + stbi_uc count,value[4]; + + count=stbi__get8(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); + + if (count > left) + count = (stbi_uc) left; + + if (!stbi__readval(s,packet->channel,value)) return 0; + + for(i=0; ichannel,dest,value); + left -= count; + } + } + break; + + case 2: {//Mixed RLE + int left=width; + while (left>0) { + int count = stbi__get8(s), i; + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); + + if (count >= 128) { // Repeated + stbi_uc value[4]; + + if (count==128) + count = stbi__get16be(s); + else + count -= 127; + if (count > left) + return stbi__errpuc("bad file","scanline overrun"); + + if (!stbi__readval(s,packet->channel,value)) + return 0; + + for(i=0;ichannel,dest,value); + } else { // Raw + ++count; + if (count>left) return stbi__errpuc("bad file","scanline overrun"); + + for(i=0;ichannel,dest)) + return 0; + } + left-=count; + } + break; + } + } + } + } + + return result; +} + +static void *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp, stbi__result_info *ri) +{ + stbi_uc *result; + int i, x,y, internal_comp; + STBI_NOTUSED(ri); + + if (!comp) comp = &internal_comp; + + for (i=0; i<92; ++i) + stbi__get8(s); + + x = stbi__get16be(s); + y = stbi__get16be(s); + + if (y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); + if (!stbi__mad3sizes_valid(x, y, 4, 0)) return stbi__errpuc("too large", "PIC image too large to decode"); + + stbi__get32be(s); //skip `ratio' + stbi__get16be(s); //skip `fields' + stbi__get16be(s); //skip `pad' + + // intermediate buffer is RGBA + result = (stbi_uc *) stbi__malloc_mad3(x, y, 4, 0); + if (!result) return stbi__errpuc("outofmem", "Out of memory"); + memset(result, 0xff, x*y*4); + + if (!stbi__pic_load_core(s,x,y,comp, result)) { + STBI_FREE(result); + result=0; + } + *px = x; + *py = y; + if (req_comp == 0) req_comp = *comp; + result=stbi__convert_format(result,4,req_comp,x,y); + + return result; +} + +static int stbi__pic_test(stbi__context *s) +{ + int r = stbi__pic_test_core(s); + stbi__rewind(s); + return r; +} +#endif + +// ************************************************************************************************* +// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb + +#ifndef STBI_NO_GIF +typedef struct +{ + stbi__int16 prefix; + stbi_uc first; + stbi_uc suffix; +} stbi__gif_lzw; + +typedef struct +{ + int w,h; + stbi_uc *out; // output buffer (always 4 components) + stbi_uc *background; // The current "background" as far as a gif is concerned + stbi_uc *history; + int flags, bgindex, ratio, transparent, eflags; + stbi_uc pal[256][4]; + stbi_uc lpal[256][4]; + stbi__gif_lzw codes[8192]; + stbi_uc *color_table; + int parse, step; + int lflags; + int start_x, start_y; + int max_x, max_y; + int cur_x, cur_y; + int line_size; + int delay; +} stbi__gif; + +static int stbi__gif_test_raw(stbi__context *s) +{ + int sz; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; + sz = stbi__get8(s); + if (sz != '9' && sz != '7') return 0; + if (stbi__get8(s) != 'a') return 0; + return 1; +} + +static int stbi__gif_test(stbi__context *s) +{ + int r = stbi__gif_test_raw(s); + stbi__rewind(s); + return r; +} + +static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) +{ + int i; + for (i=0; i < num_entries; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + pal[i][3] = transp == i ? 0 : 255; + } +} + +static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) +{ + stbi_uc version; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') + return stbi__err("not GIF", "Corrupt GIF"); + + version = stbi__get8(s); + if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); + if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); + + stbi__g_failure_reason = ""; + g->w = stbi__get16le(s); + g->h = stbi__get16le(s); + g->flags = stbi__get8(s); + g->bgindex = stbi__get8(s); + g->ratio = stbi__get8(s); + g->transparent = -1; + + if (g->w > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + if (g->h > STBI_MAX_DIMENSIONS) return stbi__err("too large","Very large image (corrupt?)"); + + if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments + + if (is_info) return 1; + + if (g->flags & 0x80) + stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); + + return 1; +} + +static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); + if (!g) return stbi__err("outofmem", "Out of memory"); + if (!stbi__gif_header(s, g, comp, 1)) { + STBI_FREE(g); + stbi__rewind( s ); + return 0; + } + if (x) *x = g->w; + if (y) *y = g->h; + STBI_FREE(g); + return 1; +} + +static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) +{ + stbi_uc *p, *c; + int idx; + + // recurse to decode the prefixes, since the linked-list is backwards, + // and working backwards through an interleaved image would be nasty + if (g->codes[code].prefix >= 0) + stbi__out_gif_code(g, g->codes[code].prefix); + + if (g->cur_y >= g->max_y) return; + + idx = g->cur_x + g->cur_y; + p = &g->out[idx]; + g->history[idx / 4] = 1; + + c = &g->color_table[g->codes[code].suffix * 4]; + if (c[3] > 128) { // don't render transparent pixels; + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } + g->cur_x += 4; + + if (g->cur_x >= g->max_x) { + g->cur_x = g->start_x; + g->cur_y += g->step; + + while (g->cur_y >= g->max_y && g->parse > 0) { + g->step = (1 << g->parse) * g->line_size; + g->cur_y = g->start_y + (g->step >> 1); + --g->parse; + } + } +} + +static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) +{ + stbi_uc lzw_cs; + stbi__int32 len, init_code; + stbi__uint32 first; + stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; + stbi__gif_lzw *p; + + lzw_cs = stbi__get8(s); + if (lzw_cs > 12) return NULL; + clear = 1 << lzw_cs; + first = 1; + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + bits = 0; + valid_bits = 0; + for (init_code = 0; init_code < clear; init_code++) { + g->codes[init_code].prefix = -1; + g->codes[init_code].first = (stbi_uc) init_code; + g->codes[init_code].suffix = (stbi_uc) init_code; + } + + // support no starting clear code + avail = clear+2; + oldcode = -1; + + len = 0; + for(;;) { + if (valid_bits < codesize) { + if (len == 0) { + len = stbi__get8(s); // start new block + if (len == 0) + return g->out; + } + --len; + bits |= (stbi__int32) stbi__get8(s) << valid_bits; + valid_bits += 8; + } else { + stbi__int32 code = bits & codemask; + bits >>= codesize; + valid_bits -= codesize; + // @OPTIMIZE: is there some way we can accelerate the non-clear path? + if (code == clear) { // clear code + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + avail = clear + 2; + oldcode = -1; + first = 0; + } else if (code == clear + 1) { // end of stream code + stbi__skip(s, len); + while ((len = stbi__get8(s)) > 0) + stbi__skip(s,len); + return g->out; + } else if (code <= avail) { + if (first) { + return stbi__errpuc("no clear code", "Corrupt GIF"); + } + + if (oldcode >= 0) { + p = &g->codes[avail++]; + if (avail > 8192) { + return stbi__errpuc("too many codes", "Corrupt GIF"); + } + + p->prefix = (stbi__int16) oldcode; + p->first = g->codes[oldcode].first; + p->suffix = (code == avail) ? p->first : g->codes[code].first; + } else if (code == avail) + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + + stbi__out_gif_code(g, (stbi__uint16) code); + + if ((avail & codemask) == 0 && avail <= 0x0FFF) { + codesize++; + codemask = (1 << codesize) - 1; + } + + oldcode = code; + } else { + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + } + } + } +} + +// this function is designed to support animated gifs, although stb_image doesn't support it +// two back is the image from two frames ago, used for a very specific disposal format +static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp, stbi_uc *two_back) +{ + int dispose; + int first_frame; + int pi; + int pcount; + STBI_NOTUSED(req_comp); + + // on first frame, any non-written pixels get the background colour (non-transparent) + first_frame = 0; + if (g->out == 0) { + if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header + if (!stbi__mad3sizes_valid(4, g->w, g->h, 0)) + return stbi__errpuc("too large", "GIF image is too large"); + pcount = g->w * g->h; + g->out = (stbi_uc *) stbi__malloc(4 * pcount); + g->background = (stbi_uc *) stbi__malloc(4 * pcount); + g->history = (stbi_uc *) stbi__malloc(pcount); + if (!g->out || !g->background || !g->history) + return stbi__errpuc("outofmem", "Out of memory"); + + // image is treated as "transparent" at the start - ie, nothing overwrites the current background; + // background colour is only used for pixels that are not rendered first frame, after that "background" + // color refers to the color that was there the previous frame. + memset(g->out, 0x00, 4 * pcount); + memset(g->background, 0x00, 4 * pcount); // state of the background (starts transparent) + memset(g->history, 0x00, pcount); // pixels that were affected previous frame + first_frame = 1; + } else { + // second frame - how do we dispose of the previous one? + dispose = (g->eflags & 0x1C) >> 2; + pcount = g->w * g->h; + + if ((dispose == 3) && (two_back == 0)) { + dispose = 2; // if I don't have an image to revert back to, default to the old background + } + + if (dispose == 3) { // use previous graphic + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &two_back[pi * 4], 4 ); + } + } + } else if (dispose == 2) { + // restore what was changed last frame to background before that frame; + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &g->background[pi * 4], 4 ); + } + } + } else { + // This is a non-disposal case eithe way, so just + // leave the pixels as is, and they will become the new background + // 1: do not dispose + // 0: not specified. + } + + // background is what out is after the undoing of the previou frame; + memcpy( g->background, g->out, 4 * g->w * g->h ); + } + + // clear my history; + memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame + + for (;;) { + int tag = stbi__get8(s); + switch (tag) { + case 0x2C: /* Image Descriptor */ + { + stbi__int32 x, y, w, h; + stbi_uc *o; + + x = stbi__get16le(s); + y = stbi__get16le(s); + w = stbi__get16le(s); + h = stbi__get16le(s); + if (((x + w) > (g->w)) || ((y + h) > (g->h))) + return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); + + g->line_size = g->w * 4; + g->start_x = x * 4; + g->start_y = y * g->line_size; + g->max_x = g->start_x + w * 4; + g->max_y = g->start_y + h * g->line_size; + g->cur_x = g->start_x; + g->cur_y = g->start_y; + + // if the width of the specified rectangle is 0, that means + // we may not see *any* pixels or the image is malformed; + // to make sure this is caught, move the current y down to + // max_y (which is what out_gif_code checks). + if (w == 0) + g->cur_y = g->max_y; + + g->lflags = stbi__get8(s); + + if (g->lflags & 0x40) { + g->step = 8 * g->line_size; // first interlaced spacing + g->parse = 3; + } else { + g->step = g->line_size; + g->parse = 0; + } + + if (g->lflags & 0x80) { + stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); + g->color_table = (stbi_uc *) g->lpal; + } else if (g->flags & 0x80) { + g->color_table = (stbi_uc *) g->pal; + } else + return stbi__errpuc("missing color table", "Corrupt GIF"); + + o = stbi__process_gif_raster(s, g); + if (!o) return NULL; + + // if this was the first frame, + pcount = g->w * g->h; + if (first_frame && (g->bgindex > 0)) { + // if first frame, any pixel not drawn to gets the background color + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi] == 0) { + g->pal[g->bgindex][3] = 255; // just in case it was made transparent, undo that; It will be reset next frame if need be; + memcpy( &g->out[pi * 4], &g->pal[g->bgindex], 4 ); + } + } + } + + return o; + } + + case 0x21: // Comment Extension. + { + int len; + int ext = stbi__get8(s); + if (ext == 0xF9) { // Graphic Control Extension. + len = stbi__get8(s); + if (len == 4) { + g->eflags = stbi__get8(s); + g->delay = 10 * stbi__get16le(s); // delay - 1/100th of a second, saving as 1/1000ths. + + // unset old transparent + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 255; + } + if (g->eflags & 0x01) { + g->transparent = stbi__get8(s); + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 0; + } + } else { + // don't need transparent + stbi__skip(s, 1); + g->transparent = -1; + } + } else { + stbi__skip(s, len); + break; + } + } + while ((len = stbi__get8(s)) != 0) { + stbi__skip(s, len); + } + break; + } + + case 0x3B: // gif stream termination code + return (stbi_uc *) s; // using '1' causes warning on some compilers + + default: + return stbi__errpuc("unknown code", "Corrupt GIF"); + } + } +} + +static void *stbi__load_gif_main_outofmem(stbi__gif *g, stbi_uc *out, int **delays) +{ + STBI_FREE(g->out); + STBI_FREE(g->history); + STBI_FREE(g->background); + + if (out) STBI_FREE(out); + if (delays && *delays) STBI_FREE(*delays); + return stbi__errpuc("outofmem", "Out of memory"); +} + +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + if (stbi__gif_test(s)) { + int layers = 0; + stbi_uc *u = 0; + stbi_uc *out = 0; + stbi_uc *two_back = 0; + stbi__gif g; + int stride; + int out_size = 0; + int delays_size = 0; + + STBI_NOTUSED(out_size); + STBI_NOTUSED(delays_size); + + memset(&g, 0, sizeof(g)); + if (delays) { + *delays = 0; + } + + do { + u = stbi__gif_load_next(s, &g, comp, req_comp, two_back); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + + if (u) { + *x = g.w; + *y = g.h; + ++layers; + stride = g.w * g.h * 4; + + if (out) { + void *tmp = (stbi_uc*) STBI_REALLOC_SIZED( out, out_size, layers * stride ); + if (!tmp) + return stbi__load_gif_main_outofmem(&g, out, delays); + else { + out = (stbi_uc*) tmp; + out_size = layers * stride; + } + + if (delays) { + int *new_delays = (int*) STBI_REALLOC_SIZED( *delays, delays_size, sizeof(int) * layers ); + if (!new_delays) + return stbi__load_gif_main_outofmem(&g, out, delays); + *delays = new_delays; + delays_size = layers * sizeof(int); + } + } else { + out = (stbi_uc*)stbi__malloc( layers * stride ); + if (!out) + return stbi__load_gif_main_outofmem(&g, out, delays); + out_size = layers * stride; + if (delays) { + *delays = (int*) stbi__malloc( layers * sizeof(int) ); + if (!*delays) + return stbi__load_gif_main_outofmem(&g, out, delays); + delays_size = layers * sizeof(int); + } + } + memcpy( out + ((layers - 1) * stride), u, stride ); + if (layers >= 2) { + two_back = out - 2 * stride; + } + + if (delays) { + (*delays)[layers - 1U] = g.delay; + } + } + } while (u != 0); + + // free temp buffer; + STBI_FREE(g.out); + STBI_FREE(g.history); + STBI_FREE(g.background); + + // do the final conversion after loading everything; + if (req_comp && req_comp != 4) + out = stbi__convert_format(out, 4, req_comp, layers * g.w, g.h); + + *z = layers; + return out; + } else { + return stbi__errpuc("not GIF", "Image was not as a gif type."); + } +} + +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *u = 0; + stbi__gif g; + memset(&g, 0, sizeof(g)); + STBI_NOTUSED(ri); + + u = stbi__gif_load_next(s, &g, comp, req_comp, 0); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + if (u) { + *x = g.w; + *y = g.h; + + // moved conversion to after successful load so that the same + // can be done for multiple frames. + if (req_comp && req_comp != 4) + u = stbi__convert_format(u, 4, req_comp, g.w, g.h); + } else if (g.out) { + // if there was an error and we allocated an image buffer, free it! + STBI_FREE(g.out); + } + + // free buffers needed for multiple frame loading; + STBI_FREE(g.history); + STBI_FREE(g.background); + + return u; +} + +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) +{ + return stbi__gif_info_raw(s,x,y,comp); +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR loader +// originally by Nicolas Schulz +#ifndef STBI_NO_HDR +static int stbi__hdr_test_core(stbi__context *s, const char *signature) +{ + int i; + for (i=0; signature[i]; ++i) + if (stbi__get8(s) != signature[i]) + return 0; + stbi__rewind(s); + return 1; +} + +static int stbi__hdr_test(stbi__context* s) +{ + int r = stbi__hdr_test_core(s, "#?RADIANCE\n"); + stbi__rewind(s); + if(!r) { + r = stbi__hdr_test_core(s, "#?RGBE\n"); + stbi__rewind(s); + } + return r; +} + +#define STBI__HDR_BUFLEN 1024 +static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) +{ + int len=0; + char c = '\0'; + + c = (char) stbi__get8(z); + + while (!stbi__at_eof(z) && c != '\n') { + buffer[len++] = c; + if (len == STBI__HDR_BUFLEN-1) { + // flush to end of line + while (!stbi__at_eof(z) && stbi__get8(z) != '\n') + ; + break; + } + c = (char) stbi__get8(z); + } + + buffer[len] = 0; + return buffer; +} + +static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) +{ + if ( input[3] != 0 ) { + float f1; + // Exponent + f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); + if (req_comp <= 2) + output[0] = (input[0] + input[1] + input[2]) * f1 / 3; + else { + output[0] = input[0] * f1; + output[1] = input[1] * f1; + output[2] = input[2] * f1; + } + if (req_comp == 2) output[1] = 1; + if (req_comp == 4) output[3] = 1; + } else { + switch (req_comp) { + case 4: output[3] = 1; /* fallthrough */ + case 3: output[0] = output[1] = output[2] = 0; + break; + case 2: output[1] = 1; /* fallthrough */ + case 1: output[0] = 0; + break; + } + } +} + +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int width, height; + stbi_uc *scanline; + float *hdr_data; + int len; + unsigned char count, value; + int i, j, k, c1,c2, z; + const char *headerToken; + STBI_NOTUSED(ri); + + // Check identifier + headerToken = stbi__hdr_gettoken(s,buffer); + if (strcmp(headerToken, "#?RADIANCE") != 0 && strcmp(headerToken, "#?RGBE") != 0) + return stbi__errpf("not HDR", "Corrupt HDR image"); + + // Parse header + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); + + // Parse width and height + // can't use sscanf() if we're not using stdio! + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + height = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + width = (int) strtol(token, NULL, 10); + + if (height > STBI_MAX_DIMENSIONS) return stbi__errpf("too large","Very large image (corrupt?)"); + if (width > STBI_MAX_DIMENSIONS) return stbi__errpf("too large","Very large image (corrupt?)"); + + *x = width; + *y = height; + + if (comp) *comp = 3; + if (req_comp == 0) req_comp = 3; + + if (!stbi__mad4sizes_valid(width, height, req_comp, sizeof(float), 0)) + return stbi__errpf("too large", "HDR image is too large"); + + // Read data + hdr_data = (float *) stbi__malloc_mad4(width, height, req_comp, sizeof(float), 0); + if (!hdr_data) + return stbi__errpf("outofmem", "Out of memory"); + + // Load image data + // image data is stored as some number of sca + if ( width < 8 || width >= 32768) { + // Read flat data + for (j=0; j < height; ++j) { + for (i=0; i < width; ++i) { + stbi_uc rgbe[4]; + main_decode_loop: + stbi__getn(s, rgbe, 4); + stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); + } + } + } else { + // Read RLE-encoded data + scanline = NULL; + + for (j = 0; j < height; ++j) { + c1 = stbi__get8(s); + c2 = stbi__get8(s); + len = stbi__get8(s); + if (c1 != 2 || c2 != 2 || (len & 0x80)) { + // not run-length encoded, so we have to actually use THIS data as a decoded + // pixel (note this can't be a valid pixel--one of RGB must be >= 128) + stbi_uc rgbe[4]; + rgbe[0] = (stbi_uc) c1; + rgbe[1] = (stbi_uc) c2; + rgbe[2] = (stbi_uc) len; + rgbe[3] = (stbi_uc) stbi__get8(s); + stbi__hdr_convert(hdr_data, rgbe, req_comp); + i = 1; + j = 0; + STBI_FREE(scanline); + goto main_decode_loop; // yes, this makes no sense + } + len <<= 8; + len |= stbi__get8(s); + if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } + if (scanline == NULL) { + scanline = (stbi_uc *) stbi__malloc_mad2(width, 4, 0); + if (!scanline) { + STBI_FREE(hdr_data); + return stbi__errpf("outofmem", "Out of memory"); + } + } + + for (k = 0; k < 4; ++k) { + int nleft; + i = 0; + while ((nleft = width - i) > 0) { + count = stbi__get8(s); + if (count > 128) { + // Run + value = stbi__get8(s); + count -= 128; + if ((count == 0) || (count > nleft)) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = value; + } else { + // Dump + if ((count == 0) || (count > nleft)) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = stbi__get8(s); + } + } + } + for (i=0; i < width; ++i) + stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); + } + if (scanline) + STBI_FREE(scanline); + } + + return hdr_data; +} + +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int dummy; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (stbi__hdr_test(s) == 0) { + stbi__rewind( s ); + return 0; + } + + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) { + stbi__rewind( s ); + return 0; + } + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *y = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *x = (int) strtol(token, NULL, 10); + *comp = 3; + return 1; +} +#endif // STBI_NO_HDR + +#ifndef STBI_NO_BMP +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) +{ + void *p; + stbi__bmp_data info; + + info.all_a = 255; + p = stbi__bmp_parse_header(s, &info); + if (p == NULL) { + stbi__rewind( s ); + return 0; + } + if (x) *x = s->img_x; + if (y) *y = s->img_y; + if (comp) { + if (info.bpp == 24 && info.ma == 0xff000000) + *comp = 3; + else + *comp = info.ma ? 4 : 3; + } + return 1; +} +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) +{ + int channelCount, dummy, depth; + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + *y = stbi__get32be(s); + *x = stbi__get32be(s); + depth = stbi__get16be(s); + if (depth != 8 && depth != 16) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 3) { + stbi__rewind( s ); + return 0; + } + *comp = 4; + return 1; +} + +static int stbi__psd_is16(stbi__context *s) +{ + int channelCount, depth; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + STBI_NOTUSED(stbi__get32be(s)); + STBI_NOTUSED(stbi__get32be(s)); + depth = stbi__get16be(s); + if (depth != 16) { + stbi__rewind( s ); + return 0; + } + return 1; +} +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) +{ + int act_comp=0,num_packets=0,chained,dummy; + stbi__pic_packet packets[10]; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { + stbi__rewind(s); + return 0; + } + + stbi__skip(s, 88); + + *x = stbi__get16be(s); + *y = stbi__get16be(s); + if (stbi__at_eof(s)) { + stbi__rewind( s); + return 0; + } + if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { + stbi__rewind( s ); + return 0; + } + + stbi__skip(s, 8); + + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return 0; + + packet = &packets[num_packets++]; + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + act_comp |= packet->channel; + + if (stbi__at_eof(s)) { + stbi__rewind( s ); + return 0; + } + if (packet->size != 8) { + stbi__rewind( s ); + return 0; + } + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); + + return 1; +} +#endif + +// ************************************************************************************************* +// Portable Gray Map and Portable Pixel Map loader +// by Ken Miller +// +// PGM: http://netpbm.sourceforge.net/doc/pgm.html +// PPM: http://netpbm.sourceforge.net/doc/ppm.html +// +// Known limitations: +// Does not support comments in the header section +// Does not support ASCII image data (formats P2 and P3) + +#ifndef STBI_NO_PNM + +static int stbi__pnm_test(stbi__context *s) +{ + char p, t; + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind( s ); + return 0; + } + return 1; +} + +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + STBI_NOTUSED(ri); + + ri->bits_per_channel = stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n); + if (ri->bits_per_channel == 0) + return 0; + + if (s->img_y > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + if (s->img_x > STBI_MAX_DIMENSIONS) return stbi__errpuc("too large","Very large image (corrupt?)"); + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + + if (!stbi__mad4sizes_valid(s->img_n, s->img_x, s->img_y, ri->bits_per_channel / 8, 0)) + return stbi__errpuc("too large", "PNM too large"); + + out = (stbi_uc *) stbi__malloc_mad4(s->img_n, s->img_x, s->img_y, ri->bits_per_channel / 8, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (!stbi__getn(s, out, s->img_n * s->img_x * s->img_y * (ri->bits_per_channel / 8))) { + STBI_FREE(out); + return stbi__errpuc("bad PNM", "PNM file truncated"); + } + + if (req_comp && req_comp != s->img_n) { + if (ri->bits_per_channel == 16) { + out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, s->img_n, req_comp, s->img_x, s->img_y); + } else { + out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); + } + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + return out; +} + +static int stbi__pnm_isspace(char c) +{ + return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; +} + +static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) +{ + for (;;) { + while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) + *c = (char) stbi__get8(s); + + if (stbi__at_eof(s) || *c != '#') + break; + + while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) + *c = (char) stbi__get8(s); + } +} + +static int stbi__pnm_isdigit(char c) +{ + return c >= '0' && c <= '9'; +} + +static int stbi__pnm_getinteger(stbi__context *s, char *c) +{ + int value = 0; + + while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { + value = value*10 + (*c - '0'); + *c = (char) stbi__get8(s); + if((value > 214748364) || (value == 214748364 && *c > '7')) + return stbi__err("integer parse overflow", "Parsing an integer in the PPM header overflowed a 32-bit int"); + } + + return value; +} + +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) +{ + int maxv, dummy; + char c, p, t; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + stbi__rewind(s); + + // Get identifier + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind(s); + return 0; + } + + *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm + + c = (char) stbi__get8(s); + stbi__pnm_skip_whitespace(s, &c); + + *x = stbi__pnm_getinteger(s, &c); // read width + if(*x == 0) + return stbi__err("invalid width", "PPM image header had zero or overflowing width"); + stbi__pnm_skip_whitespace(s, &c); + + *y = stbi__pnm_getinteger(s, &c); // read height + if (*y == 0) + return stbi__err("invalid width", "PPM image header had zero or overflowing width"); + stbi__pnm_skip_whitespace(s, &c); + + maxv = stbi__pnm_getinteger(s, &c); // read max value + if (maxv > 65535) + return stbi__err("max value > 65535", "PPM image supports only 8-bit and 16-bit images"); + else if (maxv > 255) + return 16; + else + return 8; +} + +static int stbi__pnm_is16(stbi__context *s) +{ + if (stbi__pnm_info(s, NULL, NULL, NULL) == 16) + return 1; + return 0; +} +#endif + +static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) { +#ifndef STBI_NO_JPEG + if (stbi__jpeg_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_PNG + if (stbi__png_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_GIF + if (stbi__gif_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_BMP + if (stbi__bmp_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_PSD + if (stbi__psd_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_PIC + if (stbi__pic_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_PNM + if (stbi__pnm_info(s, x, y, comp)) return 1; +#endif + +#ifndef STBI_NO_HDR + if (stbi__hdr_info(s, x, y, comp)) return 1; +#endif + + // test tga last because it's a crappy test! +#ifndef STBI_NO_TGA + if (stbi__tga_info(s, x, y, comp)) + return 1; +#endif + return stbi__err("unknown image type", "Image not of any known type, or corrupt"); +} + +static int stbi__is_16_main(stbi__context *s) { +#ifndef STBI_NO_PNG + if (stbi__png_is16(s)) return 1; +#endif + +#ifndef STBI_NO_PSD + if (stbi__psd_is16(s)) return 1; +#endif + +#ifndef STBI_NO_PNM + if (stbi__pnm_is16(s)) return 1; +#endif + return 0; +} + +#ifndef STBI_NO_STDIO + +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) { + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_info_from_file(f, x, y, comp); + fclose(f); + return result; +} + +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) { + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__info_main(&s, x, y, comp); + fseek(f, pos, SEEK_SET); + return r; +} + +STBIDEF int stbi_is_16_bit(char const *filename) { + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_is_16_bit_from_file(f); + fclose(f); + return result; +} + +STBIDEF int stbi_is_16_bit_from_file(FILE *f) { + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__is_16_main(&s); + fseek(f, pos, SEEK_SET); + return r; +} + +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) { + stbi__context s; + stbi__start_mem(&s, buffer, len); + return stbi__info_main(&s, x, y, comp); +} + +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) { + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__info_main(&s, x, y, comp); +} + +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len) { + stbi__context s; + stbi__start_mem(&s, buffer, len); + return stbi__is_16_main(&s); +} + +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *c, void *user) { + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__is_16_main(&s); +} + +#endif // STB_IMAGE_IMPLEMENTATION + +/* + revision history: + 2.20 (2019-02-07) support utf8 filenames in Windows; fix warnings and platform ifdefs + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) change sbti__shiftsigned to avoid clang -O2 bug + 1-bit BMP + *_is_16_bit api + avoid warnings + 2.16 (2017-07-23) all functions have 16-bit variants; + STBI_NO_STDIO works again; + compilation fixes; + fix rounding in unpremultiply; + optimize vertical flip; + disable raw_len validation; + documentation fixes + 2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode; + warning fixes; disable run-time SSE detection on gcc; + uniform handling of optional "return" values; + thread-safe initialization of zlib tables + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-11-29) add 16-bit API, only supported for PNG right now + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) allocate large structures on the stack + remove white matting for transparent PSD + fix reported channel count for PNG & BMP + re-enable SSE2 in non-gcc 64-bit + support RGB-formatted JPEG + read 16-bit PNGs (only as 8-bit) + 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED + 2.09 (2016-01-16) allow comments in PNM files + 16-bit-per-pixel TGA (not bit-per-component) + info() for TGA could break due to .hdr handling + info() for BMP to shares code instead of sloppy parse + can use STBI_REALLOC_SIZED if allocator doesn't support realloc + code cleanup + 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA + 2.07 (2015-09-13) fix compiler warnings + partial animated GIF support + limited 16-bpc PSD support + #ifdef unused functions + bug with < 92 byte PIC,PNM,HDR,TGA + 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value + 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning + 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit + 2.03 (2015-04-12) extra corruption checking (mmozeiko) + stbi_set_flip_vertically_on_load (nguillemot) + fix NEON support; fix mingw support + 2.02 (2015-01-19) fix incorrect assert, fix warning + 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 + 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG + 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) + progressive JPEG (stb) + PGM/PPM support (Ken Miller) + STBI_MALLOC,STBI_REALLOC,STBI_FREE + GIF bugfix -- seemingly never worked + STBI_NO_*, STBI_ONLY_* + 1.48 (2014-12-14) fix incorrectly-named assert() + 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) + optimize PNG (ryg) + fix bug in interlaced PNG with user-specified channel count (stb) + 1.46 (2014-08-26) + fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG + 1.45 (2014-08-16) + fix MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) + various warning fixes from Ronny Chevalier + 1.43 (2014-07-15) + fix MSVC-only compiler problem in code changed in 1.42 + 1.42 (2014-07-09) + don't define _CRT_SECURE_NO_WARNINGS (affects user code) + fixes to stbi__cleanup_jpeg path + added STBI_ASSERT to avoid requiring assert.h + 1.41 (2014-06-25) + fix search&replace from 1.36 that messed up comments/error messages + 1.40 (2014-06-22) + fix gcc struct-initialization warning + 1.39 (2014-06-15) + fix to TGA optimization when req_comp != number of components in TGA; + fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) + add support for BMP version 5 (more ignored fields) + 1.38 (2014-06-06) + suppress MSVC warnings on integer casts truncating values + fix accidental rename of 'skip' field of I/O + 1.37 (2014-06-04) + remove duplicate typedef + 1.36 (2014-06-03) + convert to header file single-file library + if de-iphone isn't set, load iphone images color-swapped instead of returning NULL + 1.35 (2014-05-27) + various warnings + fix broken STBI_SIMD path + fix bug where stbi_load_from_file no longer left file pointer in correct place + fix broken non-easy path for 32-bit BMP (possibly never used) + TGA optimization by Arseny Kapoulkine + 1.34 (unknown) + use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case + 1.33 (2011-07-14) + make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements + 1.32 (2011-07-13) + support for "info" function for all supported filetypes (SpartanJ) + 1.31 (2011-06-20) + a few more leak fixes, bug in PNG handling (SpartanJ) + 1.30 (2011-06-11) + added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) + removed deprecated format-specific test/load functions + removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway + error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) + fix inefficiency in decoding 32-bit BMP (David Woo) + 1.29 (2010-08-16) + various warning fixes from Aurelien Pocheville + 1.28 (2010-08-01) + fix bug in GIF palette transparency (SpartanJ) + 1.27 (2010-08-01) + cast-to-stbi_uc to fix warnings + 1.26 (2010-07-24) + fix bug in file buffering for PNG reported by SpartanJ + 1.25 (2010-07-17) + refix trans_data warning (Won Chun) + 1.24 (2010-07-12) + perf improvements reading from files on platforms with lock-heavy fgetc() + minor perf improvements for jpeg + deprecated type-specific functions so we'll get feedback if they're needed + attempt to fix trans_data warning (Won Chun) + 1.23 fixed bug in iPhone support + 1.22 (2010-07-10) + removed image *writing* support + stbi_info support from Jetro Lauha + GIF support from Jean-Marc Lienher + iPhone PNG-extensions from James Brown + warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) + 1.21 fix use of 'stbi_uc' in header (reported by jon blow) + 1.20 added support for Softimage PIC, by Tom Seddon + 1.19 bug in interlaced PNG corruption check (found by ryg) + 1.18 (2008-08-02) + fix a threading bug (local mutable static) + 1.17 support interlaced PNG + 1.16 major bugfix - stbi__convert_format converted one too many pixels + 1.15 initialize some fields for thread safety + 1.14 fix threadsafe conversion bug + header-file-only version (#define STBI_HEADER_FILE_ONLY before including) + 1.13 threadsafe + 1.12 const qualifiers in the API + 1.11 Support installable IDCT, colorspace conversion routines + 1.10 Fixes for 64-bit (don't use "unsigned long") + optimized upsampling by Fabian "ryg" Giesen + 1.09 Fix format-conversion for PSD code (bad global variables!) + 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz + 1.07 attempt to fix C++ warning/errors again + 1.06 attempt to fix C++ warning/errors again + 1.05 fix TGA loading to return correct *comp and use good luminance calc + 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free + 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR + 1.02 support for (subset of) HDR files, float interface for preferred access to them + 1.01 fix bug: possible bug in handling right-side up bmps... not sure + fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all + 1.00 interface to zlib that skips zlib header + 0.99 correct handling of alpha in palette + 0.98 TGA loader by lonesock; dynamically add loaders (untested) + 0.97 jpeg errors on too large a file; also catch another malloc failure + 0.96 fix detection of invalid v value - particleman@mollyrocket forum + 0.95 during header scan, seek to markers in case of padding + 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same + 0.93 handle jpegtran output; verbose errors + 0.92 read 4,8,16,24,32-bit BMP files of several formats + 0.91 output 24-bit Windows 3.0 BMP files + 0.90 fix a few more warnings; bump version number to approach 1.0 + 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd + 0.60 fix compiling as c++ + 0.59 fix warnings: merge Dave Moore's -Wall fixes + 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian + 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available + 0.56 fix bug: zlib uncompressed mode len vs. nlen + 0.55 fix bug: restart_interval not initialized to 0 + 0.54 allow NULL for 'int *comp' + 0.53 fix bug in png 3->4; speedup png decoding + 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments + 0.51 obey req_comp requests, 1-component jpegs return as 1-component, + on 'test' only check type, not whether we support this variant + 0.50 (2006-11-19) + first released version +*/ + + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/examples/vk-shadertoy/textures.h b/examples/vk-shadertoy/textures.h new file mode 100644 index 0000000..a5f0836 --- /dev/null +++ b/examples/vk-shadertoy/textures.h @@ -0,0 +1,82 @@ + +#include "vulkan/render.h" + +class VulkanRender; + +static vk_error +init_texture_mem(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *image, uint8_t *texture, int width, int height, const char *name, bool mipmaps, + bool linear) { + vk_error retval = VK_ERROR_NONE; + VkFormat img_format = VK_FORMAT_R8G8B8A8_UNORM; //VK_FORMAT_R8G8B8A8_SRGB + *image = (struct vk_image) { + .format = img_format, + .extent = {.width = static_cast(width), .height = static_cast(height)}, + .usage = (VkImageUsageFlagBits) (VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT | + VK_IMAGE_USAGE_TRANSFER_SRC_BIT), + .stage = VK_SHADER_STAGE_FRAGMENT_BIT, + .make_view = true, + .host_visible = false, + .anisotropyEnable = true, + .repeat_mode = VK_SAMPLER_ADDRESS_MODE_REPEAT, //VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER //VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE + .mipmaps = mipmaps, + .linear = linear || mipmaps, + }; + + retval = VulkanUtils::create_images(phy_dev, dev, image, 1); + if (!vk_error_is_success(&retval)) { + retval.error.type = VK_ERROR_ERRNO; + vk_error_printf(&retval, "Failed to create texture images\n"); + return retval; + } + retval = VulkanRender::init_texture(phy_dev, dev, essentials, image, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, texture, + name); + return retval; +} + +#ifdef USE_stb_image + +static vk_error +init_texture_file(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *image, const char *name, bool mipmaps) { + vk_error retval = VK_ERROR_NONE; + int width, height, channels; + stbi_set_flip_vertically_on_load(true); //flip image Y + uint8_t *generated_texture = stbi_load(name, &width, &height, &channels, STBI_rgb_alpha); + if (generated_texture == nullptr) { + retval.error.type = VK_ERROR_ERRNO; + printf("Error in loading image %s\n", name); + return retval; + } + + retval = init_texture_mem(phy_dev, dev, essentials, image, generated_texture, width, height, name, mipmaps, true); + stbi_image_free(generated_texture); + return retval; +} + +#endif + +static vk_error +texture_empty(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *image, int width, int height) { + vk_error retval = VK_ERROR_NONE; + size_t texture_size = static_cast(width * height * 4) * sizeof(uint8_t); + auto *generated_texture = (uint8_t *) malloc(texture_size); + if (generated_texture == nullptr) { + retval.error.type = VK_ERROR_ERRNO; + printf("Error in allocating memory\n"); + return retval; + } + for (unsigned int i = 0; i < height; ++i) { + for (unsigned int j = 0; j < width; ++j) { + size_t pixel = (i * static_cast(width) + j) * 4 * sizeof(uint8_t); + generated_texture[pixel + 0] = 0x00; + generated_texture[pixel + 1] = 0x00; + generated_texture[pixel + 2] = 0x00; + generated_texture[pixel + 3] = 0x00; + } + } + retval = init_texture_mem(phy_dev, dev, essentials, image, generated_texture, width, height, "empty", false, false); + free(generated_texture); + return retval; +} diff --git a/examples/vk-shadertoy/textures/1.png b/examples/vk-shadertoy/textures/1.png new file mode 100644 index 0000000..c7370e3 Binary files /dev/null and b/examples/vk-shadertoy/textures/1.png differ diff --git a/examples/vk-shadertoy/textures/2.png b/examples/vk-shadertoy/textures/2.png new file mode 100644 index 0000000..2f964f2 Binary files /dev/null and b/examples/vk-shadertoy/textures/2.png differ diff --git a/examples/vk-shadertoy/textures/3.png b/examples/vk-shadertoy/textures/3.png new file mode 100644 index 0000000..2f964f2 Binary files /dev/null and b/examples/vk-shadertoy/textures/3.png differ diff --git a/examples/vk-shadertoy/textures/4.png b/examples/vk-shadertoy/textures/4.png new file mode 100644 index 0000000..2f964f2 Binary files /dev/null and b/examples/vk-shadertoy/textures/4.png differ diff --git a/examples/vk-shadertoy/vk_backend.cc b/examples/vk-shadertoy/vk_backend.cc deleted file mode 100644 index c6ff1cf..0000000 --- a/examples/vk-shadertoy/vk_backend.cc +++ /dev/null @@ -1,726 +0,0 @@ -/* - * Copyright © 2024 Joel Winarske - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#include "vk_backend.h" - -#include -#include - -#include "logging.h" - -VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE - -const auto& d = vk::defaultDispatchLoaderDynamic; - -#define S1(x) #x -#define S2(x) S1(x) -#define LOCATION __FILE__ " : " S2(__LINE__) - -#define CHECK_VK_RESULT(x) \ - do { \ - vk::resultCheck(static_cast(x), LOCATION); \ - } while (0) - -VulkanBackend::VulkanBackend(std::string app_id, bool enable_validation_layers) - : d_(d), - app_id_(std::move(app_id)), - width_(0), - height_(0), - enable_validation_layers_(enable_validation_layers), - resize_pending_(false) { - VULKAN_HPP_DEFAULT_DISPATCHER.init(); - createInstance(); - setupDebugMessenger(); -} - -VulkanBackend::~VulkanBackend() { - if (device_ != VK_NULL_HANDLE) { - if (swapchain_command_pool_) { - d_.vkDestroyCommandPool(device_, swapchain_command_pool_, nullptr); - } - if (post_acquire_semaphore_) { - d_.vkDestroySemaphore(device_, post_acquire_semaphore_, nullptr); - } - if (pre_submit_semaphore_) { - d_.vkDestroySemaphore(device_, pre_submit_semaphore_, nullptr); - } - if (exec_fence_) { - d_.vkDestroyFence(device_, exec_fence_, nullptr); - } - d_.vkDestroyDevice(device_, nullptr); - } - if (surface_ != VK_NULL_HANDLE) { - d_.vkDestroySurfaceKHR(instance_, surface_, nullptr); - } - if (enable_validation_layers_) { - if (mDebugCallback) { - d_.vkDestroyDebugReportCallbackEXT(instance_, mDebugCallback, VKALLOC); - } - if (mDebugMessenger) { - d_.vkDestroyDebugUtilsMessengerEXT(instance_, mDebugMessenger, VKALLOC); - } - } - if (instance_ != nullptr) { - d_.vkDestroyInstance(instance_, nullptr); - } - if (!enabled_instance_extensions_.empty()) { - for (auto it : enabled_instance_extensions_) { - free((void*)it); - } - } - if (!enabled_layer_extensions_.empty()) { - for (auto it : enabled_layer_extensions_) { - free((void*)it); - } - } -} - -void VulkanBackend::createInstance() { - auto instance_extensions = vk::enumerateInstanceExtensionProperties(); - spdlog::debug("Vulkan Instance Extensions:"); - bool supports_minimum_required[2]{}; - for (const auto& l : instance_extensions.value) { - spdlog::debug("\t{}: version: {}", l.extensionName, l.specVersion); - if (enable_validation_layers_) { - if (strcmp(l.extensionName, VK_EXT_VALIDATION_FEATURES_EXTENSION_NAME) == - 0) { - enabled_instance_extensions_.push_back(strdup(l.extensionName)); - } - if (strcmp(l.extensionName, VK_EXT_DEBUG_UTILS_EXTENSION_NAME) == 0) { - debugUtilsSupported_ = true; - enabled_instance_extensions_.push_back(strdup(l.extensionName)); - } - if (strcmp(l.extensionName, VK_EXT_DEBUG_REPORT_EXTENSION_NAME) == 0) { - enabled_instance_extensions_.push_back(strdup(l.extensionName)); - } - } - if (strcmp(l.extensionName, VK_KHR_SURFACE_EXTENSION_NAME) == 0) { - supports_minimum_required[0] = true; - enabled_instance_extensions_.push_back(strdup(l.extensionName)); - } - if (strcmp(l.extensionName, VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME) == 0) { - supports_minimum_required[1] = true; - enabled_instance_extensions_.push_back(strdup(l.extensionName)); - } - } - - if (!supports_minimum_required[0] && !supports_minimum_required[1]) { - spdlog::critical( - "The Vulkan driver does not support the required instance extensions"); - exit(EXIT_FAILURE); - } - - std::ostringstream ss; - ss << "Enabling " << enabled_instance_extensions_.size() - << " instance extensions"; - if (!enabled_instance_extensions_.empty()) { - ss << ":"; - } - spdlog::info(ss.str().c_str()); - for (auto& extension : enabled_instance_extensions_) { - spdlog::debug("\t{}", extension); - } - - VkApplicationInfo app_info{}; - app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO; - app_info.pApplicationName = app_id_.c_str(); - app_info.applicationVersion = VK_MAKE_VERSION(1, 0, 0); - app_info.pEngineName = "No Engine"; - app_info.engineVersion = VK_MAKE_VERSION(1, 0, 0); - app_info.apiVersion = VK_MAKE_VERSION(1, 1, 0); - - VkInstanceCreateInfo info{}; - info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO; - info.pApplicationInfo = &app_info; - info.enabledExtensionCount = - static_cast(enabled_instance_extensions_.size()); - info.ppEnabledExtensionNames = enabled_instance_extensions_.data(); - - static constexpr char VK_LAYER_KHRONOS_VALIDATION_NAME[] = - "VK_LAYER_KHRONOS_validation"; - - auto available_layers = vk::enumerateInstanceLayerProperties(); - SPDLOG_DEBUG("Vulkan Instance Layers:"); - for (const auto& l : available_layers.value) { - SPDLOG_DEBUG("\t{} - {}", l.layerName, l.description); - if (enable_validation_layers_ && - strcmp(l.layerName, VK_LAYER_KHRONOS_VALIDATION_NAME) == 0) { - enabled_layer_extensions_.push_back(VK_LAYER_KHRONOS_VALIDATION_NAME); - break; - } - } - - ss.clear(); - ss.str(""); - ss << "Enabling " << enabled_layer_extensions_.size() << " layer extensions"; - if (!enabled_layer_extensions_.empty()) { - ss << ":"; - } - for (const auto& layer : enabled_layer_extensions_) { - ss << "\n\t" << layer; - } - spdlog::info(ss.str()); - - info.enabledLayerCount = - static_cast(enabled_layer_extensions_.size()); - info.ppEnabledLayerNames = enabled_layer_extensions_.data(); - - CHECK_VK_RESULT(d_.vkCreateInstance(&info, nullptr, &instance_) != - VK_SUCCESS); - - VULKAN_HPP_DEFAULT_DISPATCHER.init(vk::Instance(instance_)); -} - -void VulkanBackend::setupDebugMessenger() { - if (!enable_validation_layers_) - return; - - if (debugUtilsSupported_) { - VkDebugUtilsMessengerCreateInfoEXT createInfo{}; - createInfo.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT; - createInfo.messageSeverity = - VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT | - VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT; - createInfo.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT | - VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT | - VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT; - createInfo.pfnUserCallback = debugUtilsCallback; - - CHECK_VK_RESULT(d_.vkCreateDebugUtilsMessengerEXT( - instance_, &createInfo, VKALLOC, &mDebugMessenger) != - VK_SUCCESS); - } else if (d_.vkCreateDebugReportCallbackEXT) { - VkDebugReportCallbackCreateInfoEXT cb_info{}; - cb_info.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT; - cb_info.flags = - VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_ERROR_BIT_EXT; - cb_info.pfnCallback = debugReportCallback; - CHECK_VK_RESULT(d_.vkCreateDebugReportCallbackEXT( - instance_, &cb_info, VKALLOC, &mDebugCallback) != - VK_SUCCESS); - } -} - -void VulkanBackend::findPhysicalDevice() { - uint32_t count; - CHECK_VK_RESULT(d_.vkEnumeratePhysicalDevices(instance_, &count, nullptr)); - std::vector physical_devices(count); - CHECK_VK_RESULT(d_.vkEnumeratePhysicalDevices(instance_, &count, - physical_devices.data())); - - SPDLOG_DEBUG("Enumerating {} physical device(s).", count); - - uint32_t selected_score = 0; - for (const auto& physical_device : physical_devices) { - VkPhysicalDeviceProperties properties; - VkPhysicalDeviceFeatures features; - d_.vkGetPhysicalDeviceProperties(physical_device, &properties); - d_.vkGetPhysicalDeviceFeatures(physical_device, &features); - - SPDLOG_DEBUG("Checking device: {}", properties.deviceName); - - uint32_t score = 0; - std::vector supported_extensions; - - uint32_t qfp_count; - d_.vkGetPhysicalDeviceQueueFamilyProperties(physical_device, &qfp_count, - nullptr); - std::vector qfp(qfp_count); - d_.vkGetPhysicalDeviceQueueFamilyProperties(physical_device, &qfp_count, - qfp.data()); - std::optional graphics_queue_family; - for (uint32_t i = 0; i < qfp.size(); i++) { - SPDLOG_DEBUG("Queue Count: {}", qfp[i].queueCount); - - // Only pick graphics queues that can also present to the surface. - // Graphics queues that can't present are rare if not nonexistent, but - // the spec allows for this, so check it anyhow. - VkBool32 surface_present_supported; - CHECK_VK_RESULT(d_.vkGetPhysicalDeviceSurfaceSupportKHR( - physical_device, i, surface_, &surface_present_supported)); - - if (!graphics_queue_family.has_value() && - qfp[i].queueFlags & VK_QUEUE_GRAPHICS_BIT && - surface_present_supported) { - graphics_queue_family = i; - } - } - - // Skip physical devices that don't have a graphics queue. - if (!graphics_queue_family.has_value()) { - spdlog::info(" - Skipping due to no suitable graphics queues."); - continue; - } - - // Prefer discrete GPUs. - if (properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) { - score += 1 << 30; - } - - uint32_t extension_count; - CHECK_VK_RESULT(d_.vkEnumerateDeviceExtensionProperties( - physical_device, nullptr, &extension_count, nullptr)); - std::vector available_extensions(extension_count); - CHECK_VK_RESULT(d_.vkEnumerateDeviceExtensionProperties( - physical_device, nullptr, &extension_count, - available_extensions.data())); - - bool supports_swapchain = false; - for (const auto& available_extension : available_extensions) { - if (strcmp(VK_KHR_SWAPCHAIN_EXTENSION_NAME, - available_extension.extensionName) == 0) { - supports_swapchain = true; - supported_extensions.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME); - } - // The spec requires VK_KHR_portability_subset be enabled whenever it's - // available on a device. It's present on compatibility ICDs like - // MoltenVK. - else if (strcmp("VK_KHR_portability_subset", - available_extension.extensionName) == 0) { - supported_extensions.push_back("VK_KHR_portability_subset"); - } - // Prefer GPUs that support VK_KHR_get_memory_requirements2. - else if (strcmp(VK_KHR_GET_MEMORY_REQUIREMENTS_2_EXTENSION_NAME, - available_extension.extensionName) == 0) { - score += 1 << 29; - supported_extensions.push_back( - VK_KHR_GET_MEMORY_REQUIREMENTS_2_EXTENSION_NAME); - } - } - - // Skip physical devices that don't have swapchain support. - if (!supports_swapchain) { - SPDLOG_DEBUG(" - Skipping due to lack of swapchain support."); - continue; - } - - // Prefer GPUs with larger max texture sizes. - score += properties.limits.maxImageDimension2D; - - if (selected_score < score) { - SPDLOG_DEBUG(" - This is the best device so far. Score: 0x{:x}", score); - - selected_score = score; - physical_device_ = physical_device; - enabled_device_extensions_ = supported_extensions; - spdlog::debug("supported extensions: {}", supported_extensions.size()); - for (auto& extension : supported_extensions) - spdlog::debug("\t{}", extension); - queue_family_index_ = - graphics_queue_family.value_or(std::numeric_limits::max()); - - // Bingo, we finally found a physical device that supports everything we - // need. - d_.vkGetPhysicalDeviceFeatures(physical_device, - &physical_device_features_); - d_.vkGetPhysicalDeviceProperties(physical_device, - &physical_device_properties_); - d_.vkGetPhysicalDeviceMemoryProperties( - physical_device, &physical_device_memory_properties_); - - // Print some driver or MoltenVK information if it is available. - if (d_.vkGetPhysicalDeviceProperties2KHR) { - VkPhysicalDeviceDriverProperties driverProperties{}; - driverProperties.sType = - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRIVER_PROPERTIES; - - VkPhysicalDeviceProperties2 physicalDeviceProperties2{}; - physicalDeviceProperties2.sType = - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2; - physicalDeviceProperties2.pNext = &driverProperties; - - d_.vkGetPhysicalDeviceProperties2KHR(physical_device_, - &physicalDeviceProperties2); - spdlog::info("Vulkan device driver: {} {}", driverProperties.driverName, - driverProperties.driverInfo); - } - - // Print out some properties of the GPU for diagnostic purposes. - spdlog::info("Vendor {:x}, device {:x}, driver {:x}, api {}.{}", - properties.vendorID, properties.deviceID, - properties.driverVersion, - VK_VERSION_MAJOR(properties.apiVersion), - VK_VERSION_MINOR(properties.apiVersion)); - break; - } - } - - if (physical_device_ == nullptr) { - spdlog::critical("Failed to find a compatible Vulkan physical device."); - exit(EXIT_FAILURE); - } -} - -void VulkanBackend::createLogicalDevice() { - std::ostringstream ss; - ss << "Enabling " << enabled_device_extensions_.size() - << " device extensions"; - if (!enabled_device_extensions_.empty()) { - ss << ":"; - } - spdlog::debug(ss.str().c_str()); - for (const char* extension : enabled_device_extensions_) { - spdlog::debug("\t{}", extension); - } - - float priority = 1.0f; - VkDeviceQueueCreateInfo queue_info{}; - queue_info.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; - queue_info.queueFamilyIndex = queue_family_index_; - queue_info.queueCount = 1; // TODO - driver can support more than one - queue_info.pQueuePriorities = &priority; - - VkPhysicalDeviceFeatures device_features{}; - VkDeviceCreateInfo device_info{}; - device_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO; - device_info.queueCreateInfoCount = 1; - device_info.pQueueCreateInfos = &queue_info; - device_info.enabledExtensionCount = - static_cast(enabled_device_extensions_.size()); - device_info.ppEnabledExtensionNames = enabled_device_extensions_.data(); - device_info.pEnabledFeatures = &device_features; - - CHECK_VK_RESULT( - d_.vkCreateDevice(physical_device_, &device_info, nullptr, &device_)); - - d_.vkGetDeviceQueue(device_, queue_family_index_, 0, &queue_); -} - -bool VulkanBackend::InitializeSwapChain() { - if (resize_pending_) { - resize_pending_ = false; - d_.vkDestroySwapchainKHR(device_, swapchain_, nullptr); - - CHECK_VK_RESULT(d_.vkQueueWaitIdle(queue_)); - CHECK_VK_RESULT( - d_.vkResetCommandPool(device_, swapchain_command_pool_, - VK_COMMAND_POOL_RESET_RELEASE_RESOURCES_BIT)); - } - - // -------------------------------------------------------------------------- - // Choose an image format that can be presented to the surface, preferring - // the common BGRA+sRGB if available. - // -------------------------------------------------------------------------- - - uint32_t format_count; - CHECK_VK_RESULT(d_.vkGetPhysicalDeviceSurfaceFormatsKHR( - physical_device_, surface_, &format_count, nullptr)); - std::vector formats(format_count); - CHECK_VK_RESULT(d_.vkGetPhysicalDeviceSurfaceFormatsKHR( - physical_device_, surface_, &format_count, formats.data())); - - surface_format_ = formats[0]; - for (const auto& format : formats) { - if (format.format == VK_FORMAT_B8G8R8A8_UNORM && - format.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) { - surface_format_ = format; - break; - } - } - - // -------------------------------------------------------------------------- - // Choose the presentable image size that's as close as possible to the - // window size. - // -------------------------------------------------------------------------- - - VkExtent2D clientSize; - - VkSurfaceCapabilitiesKHR surface_capabilities; - CHECK_VK_RESULT(d_.vkGetPhysicalDeviceSurfaceCapabilitiesKHR( - physical_device_, surface_, &surface_capabilities)); - - if (surface_capabilities.currentExtent.width != UINT32_MAX) { - // If the surface reports a specific extent, we must use it. - clientSize = surface_capabilities.currentExtent; - } else { - VkExtent2D actual_extent{}; - actual_extent.width = width_; - actual_extent.height = height_; - - clientSize.width = - std::max(surface_capabilities.minImageExtent.width, - std::min(surface_capabilities.maxImageExtent.width, - actual_extent.width)); - clientSize.height = - std::max(surface_capabilities.minImageExtent.height, - std::min(surface_capabilities.maxImageExtent.height, - actual_extent.height)); - } - - // -------------------------------------------------------------------------- - // Desired image count - // -------------------------------------------------------------------------- - - const uint32_t maxImageCount = surface_capabilities.maxImageCount; - const uint32_t minImageCount = surface_capabilities.minImageCount; - uint32_t desiredImageCount = minImageCount + 1; - - // According to section 30.5 of VK 1.1, maxImageCount of zero means "that - // there is no limit on the number of images, though there may be limits - // related to the total amount of memory used by presentable images." - if (maxImageCount != 0 && desiredImageCount > maxImageCount) { - spdlog::error("Swap chain does not support {} images.", desiredImageCount); - desiredImageCount = surface_capabilities.minImageCount; - } - - // -------------------------------------------------------------------------- - // Choose the present mode. - // -------------------------------------------------------------------------- - - uint32_t mode_count; - CHECK_VK_RESULT(d_.vkGetPhysicalDeviceSurfacePresentModesKHR( - physical_device_, surface_, &mode_count, nullptr)); - std::vector modes(mode_count); - CHECK_VK_RESULT(d_.vkGetPhysicalDeviceSurfacePresentModesKHR( - physical_device_, surface_, &mode_count, modes.data())); - assert(!formats.empty()); // Shouldn't be possible. - - // If the preferred mode isn't available, just choose the first one. - VkPresentModeKHR present_mode = modes[0]; - for (const auto& mode : modes) { - if (mode == kPreferredPresentMode) { - present_mode = mode; - break; - } - } - - // -------------------------------------------------------------------------- - // Create the swapchain. - // -------------------------------------------------------------------------- - - const VkCompositeAlphaFlagBitsKHR compositeAlpha = - (surface_capabilities.supportedCompositeAlpha & - VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR) - ? VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR - : VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; - - VkSwapchainCreateInfoKHR info{}; - info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR; - info.surface = surface_; - info.minImageCount = desiredImageCount; - info.imageFormat = surface_format_.format; - info.imageColorSpace = surface_format_.colorSpace; - info.imageExtent = clientSize; - info.imageArrayLayers = 1; - info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT; - info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; - info.preTransform = surface_capabilities.currentTransform; - info.compositeAlpha = compositeAlpha; - info.presentMode = present_mode; - info.clipped = VK_TRUE; - - auto result = d_.vkCreateSwapchainKHR(device_, &info, VKALLOC, &swapchain_); - CHECK_VK_RESULT(result); - if (result != VK_SUCCESS) { - return false; - } - - // -------------------------------------------------------------------------- - // Fetch SwapChain images - // -------------------------------------------------------------------------- - - uint32_t image_count; - CHECK_VK_RESULT( - d_.vkGetSwapchainImagesKHR(device_, swapchain_, &image_count, nullptr)); - swapchain_images_.reserve(image_count); - CHECK_VK_RESULT(d_.vkGetSwapchainImagesKHR(device_, swapchain_, &image_count, - swapchain_images_.data())); - swapchain_images_.resize(image_count); - - SPDLOG_DEBUG("Swapchain Image Count: {}", swapchain_images_.size()); - - // -------------------------------------------------------------------------- - // Record a command buffer for each of the images to be executed prior to - // presenting. - // -------------------------------------------------------------------------- - - present_transition_buffers_.resize(swapchain_images_.size()); - - VkCommandBufferAllocateInfo buffers_info{}; - buffers_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; - buffers_info.commandPool = swapchain_command_pool_; - buffers_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; - buffers_info.commandBufferCount = - static_cast(present_transition_buffers_.size()); - - CHECK_VK_RESULT(d_.vkAllocateCommandBuffers( - device_, &buffers_info, present_transition_buffers_.data())); - - for (size_t i = 0; i < swapchain_images_.size(); i++) { - auto image = swapchain_images_[i]; - auto buffer = present_transition_buffers_[i]; - - VkCommandBufferBeginInfo begin_info{}; - begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; - CHECK_VK_RESULT(d_.vkBeginCommandBuffer(buffer, &begin_info)); - - // Filament Engine hands back the image after writing to it - VkImageMemoryBarrier barrier{}; - barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; - barrier.srcAccessMask = 0; - barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT; - barrier.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; - barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR; - barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; - barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; - barrier.image = image; - barrier.subresourceRange = { - .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, - .baseMipLevel = 0, - .levelCount = 1, - .baseArrayLayer = 0, - .layerCount = 1, - }; - d_.vkCmdPipelineBarrier(buffer, - VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, - VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, nullptr, - 0, nullptr, 1, &barrier); - - CHECK_VK_RESULT(d_.vkEndCommandBuffer(buffer)); - } - - return true; -} - -VKAPI_ATTR VkBool32 - - VKAPI_CALL - VulkanBackend::debugReportCallback(VkDebugReportFlagsEXT flags, - VkDebugReportObjectTypeEXT objectType, - uint64_t object, - size_t location, - int32_t messageCode, - const char* pLayerPrefix, - const char* pMessage, - void* pUserData) { - (void)objectType; - (void)object; - (void)location; - (void)messageCode; - (void)pUserData; - if (flags & VK_DEBUG_REPORT_ERROR_BIT_EXT) { - spdlog::error("VULKAN ERROR: ({}) {}", pLayerPrefix, pMessage); - } else { - spdlog::warn("VULKAN WARNING: ({}) {}", pLayerPrefix, pMessage); - } - return VK_FALSE; -} - -VKAPI_ATTR VkBool32 VKAPI_CALL VulkanBackend::debugUtilsCallback( - VkDebugUtilsMessageSeverityFlagBitsEXT severity, - VkDebugUtilsMessageTypeFlagsEXT types, - const VkDebugUtilsMessengerCallbackDataEXT* cbdata, - void* pUserData) { - (void)types; - (void)pUserData; - if (severity & VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT) { - spdlog::error("VULKAN ERROR: ({}) {}", cbdata->pMessageIdName, - cbdata->pMessage); - } else { - // TODO: emit best practices warnings about aggressive pipeline barriers. - if (strstr(cbdata->pMessage, "ALL_GRAPHICS_BIT") || - strstr(cbdata->pMessage, "ALL_COMMANDS_BIT")) { - return VK_FALSE; - } - spdlog::warn("VULKAN WARNING: ({}) {}", cbdata->pMessageIdName, - cbdata->pMessage); - } - return VK_TRUE; -} - -void VulkanBackend::Resize(int32_t width, int32_t height) { - if (width_ != width || height_ != height) { - resize_pending_ = true; - width_ = static_cast(width); - height_ = static_cast(height); - } -} - -void VulkanBackend::CreateSurface(struct wl_display* display, - struct wl_surface* surface, - int32_t width, - int32_t height, - uint32_t command_buffer_count) { - SPDLOG_DEBUG("CreateSurface"); - - if (surface_ != VK_NULL_HANDLE) { - spdlog::error("Vulkan Surface already exists"); - return; - } - - assert(instance_ != VK_NULL_HANDLE); - assert(surface != nullptr); - - wl_display_ = display; - wl_surface_ = surface; - width_ = static_cast(width); - height_ = static_cast(height); - swapchain_command_buffers_count_ = command_buffer_count; - - VkWaylandSurfaceCreateInfoKHR createInfo{}; - createInfo.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR; - createInfo.display = wl_display_; - createInfo.surface = wl_surface_; - - CHECK_VK_RESULT( - d_.vkCreateWaylandSurfaceKHR(instance_, &createInfo, nullptr, &surface_)); - - findPhysicalDevice(); - createLogicalDevice(); - - // -------------------------------------------------------------------------- - // Create command pool, buffers, and sync primitives - // -------------------------------------------------------------------------- - - VkSemaphoreCreateInfo s_info{}; - s_info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO; - d_.vkCreateSemaphore(device_, &s_info, nullptr, &post_acquire_semaphore_); - d_.vkCreateSemaphore(device_, &s_info, nullptr, &pre_submit_semaphore_); - - VkCommandPoolCreateInfo pool_info{}; - pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; - pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT; - pool_info.queueFamilyIndex = queue_family_index_; - d_.vkCreateCommandPool(device_, &pool_info, nullptr, - &swapchain_command_pool_); - - VkFenceCreateInfo f_info{}; - f_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO; - d_.vkCreateFence(device_, &f_info, nullptr, &exec_fence_); - - if (swapchain_command_buffers_count_) { - VkCommandBufferAllocateInfo buffer_info{}; - buffer_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; - buffer_info.commandPool = swapchain_command_pool_; - buffer_info.commandBufferCount = swapchain_command_buffers_count_; - buffer_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; - d_.vkAllocateCommandBuffers(device_, &buffer_info, &swapchain_buffers_); - spdlog::debug("Created {} command buffers", - swapchain_command_buffers_count_); - } - - if (!InitializeSwapChain()) { - spdlog::critical("Failed to create swapchain."); - exit(EXIT_FAILURE); - } -} diff --git a/examples/vk-shadertoy/vk_backend.h b/examples/vk-shadertoy/vk_backend.h deleted file mode 100644 index e1b4fd7..0000000 --- a/examples/vk-shadertoy/vk_backend.h +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright © 2024 Joel Winarske - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#pragma once - -#define VULKAN_HPP_NO_EXCEPTIONS 1 -#define VK_USE_PLATFORM_WAYLAND_KHR 1 -#define VULKAN_HPP_DISPATCH_LOADER_DYNAMIC 1 - -#include - -#include - -// Default -constexpr struct VkAllocationCallbacks* VKALLOC = nullptr; - -class VulkanBackend { - public: - VulkanBackend(std::string app_id, bool enable_validation_layers); - - ~VulkanBackend(); - - void CreateSurface(struct wl_display* display, - struct wl_surface* surface, - int32_t width, - int32_t height, - uint32_t command_buffer_count); - - void Resize(int32_t width, int32_t height); - - private: - static constexpr VkPresentModeKHR kPreferredPresentMode = - VK_PRESENT_MODE_FIFO_KHR; - - const vk::DispatchLoaderDynamic& d_; - - std::string app_id_; - std::vector enabled_instance_extensions_{}; - std::vector enabled_device_extensions_{}; - std::vector enabled_layer_extensions_{}; - VkInstance instance_{}; - VkSurfaceKHR surface_{}; - - VkPhysicalDevice physical_device_{}; - VkPhysicalDeviceFeatures physical_device_features_{}; - VkPhysicalDeviceProperties physical_device_properties_{}; - VkPhysicalDeviceMemoryProperties physical_device_memory_properties_{}; - - VkDevice device_{}; - uint32_t queue_family_index_{}; - VkQueue queue_{}; - - bool debugUtilsSupported_{}; - bool enable_validation_layers_; - - VkSurfaceFormatKHR surface_format_{}; - VkSwapchainKHR swapchain_{}; - VkCommandPool swapchain_command_pool_{}; - uint32_t swapchain_command_buffers_count_{}; - VkCommandBuffer swapchain_buffers_{}; - std::vector swapchain_images_; - std::vector present_transition_buffers_; - - VkSemaphore post_acquire_semaphore_{}; - VkSemaphore pre_submit_semaphore_{}; - VkFence exec_fence_{}; - - bool resize_pending_; - - struct wl_display* wl_display_{}; - struct wl_surface* wl_surface_{}; - uint32_t width_; - uint32_t height_; - - /** - * @brief Create Vulkan instance - * @return void - * @relation - * wayland - */ - void createInstance(); - - /** - * @brief Setup Vulkan debug callback - * @return void - * @relation - * wayland - */ - void setupDebugMessenger(); - - /** - * @brief Find a compatible Vulkan physical device - * @return void - * @relation - * wayland - */ - void findPhysicalDevice(); - - /** - * @brief Create Vulkan logical device - * @return void - * @relation - * wayland - */ - void createLogicalDevice(); - - /** - * @brief Initialize Vulkan swapchain - * @return bool - * @retval true Normal end - * @retval false Abnormal end - * @relation - * wayland - */ - bool InitializeSwapChain(); - - VkDebugReportCallbackEXT mDebugCallback = VK_NULL_HANDLE; - VkDebugUtilsMessengerEXT mDebugMessenger = VK_NULL_HANDLE; - - /** - * @brief Callback to VK_EXT_debug_utils - * @param[in] severity Bitmask of VkDebugUtilsMessageSeverityFlagBitsEXT - * @param[in] types No use - * @param[in] cbdata Structure specifying parameters returned to the callback - * @param[in] pUserData No use - * @return VkBool32 - * @retval VK_FALSE Abnormal end - * @relation - * wayland - */ - static VKAPI_ATTR VkBool32 - - VKAPI_CALL - debugUtilsCallback(VkDebugUtilsMessageSeverityFlagBitsEXT severity, - VkDebugUtilsMessageTypeFlagsEXT types, - const VkDebugUtilsMessengerCallbackDataEXT* cbdata, - void* pUserData); - - /** - * @brief Callback to VK_EXT_debug_report - * @param[in] flags Bitmask of VkDebugReportFlagBitsEXT - * @param[in] objectType No use - * @param[in] object No use - * @param[in] location No use - * @param[in] messageCode No use - * @param[in] pLayerPrefix The name of the component - * @param[in] pMessage Output message - * @param[in] pUserData No use - * @return VkBool32 - * @retval VK_FALSE Abnormal end - * @relation - * wayland - */ - static VKAPI_ATTR VkBool32 - - VKAPI_CALL - debugReportCallback(VkDebugReportFlagsEXT flags, - VkDebugReportObjectTypeEXT objectType, - uint64_t object, - size_t location, - int32_t messageCode, - const char* pLayerPrefix, - const char* pMessage, - void* pUserData); -}; \ No newline at end of file diff --git a/examples/vk-shadertoy/vk_buffer.cc b/examples/vk-shadertoy/vk_buffer.cc deleted file mode 100644 index ad3d1b1..0000000 --- a/examples/vk-shadertoy/vk_buffer.cc +++ /dev/null @@ -1,73 +0,0 @@ - -#include "vk_buffer.h" - -#include "vk_common.h" - -VulkanBuffer::VulkanBuffer( - const vk::DispatchLoaderDynamic& dispatcher, - VkDevice device, - const VkPhysicalDeviceMemoryProperties& phy_dev_mem_props, - uint32_t size, - VkBufferUsageFlagBits usage) - : d_(dispatcher), - device_(device), - phy_dev_mem_props_(phy_dev_mem_props), - size_(size), - usage_(usage), - host_visible_(false) {} - -VulkanBuffer::~VulkanBuffer() {} - -vk::Result VulkanBuffer::create() { - buffer_ = nullptr; - buffer_mem_ = nullptr; - view_ = nullptr; - - bool shared = sharing_queue_count_ > 1; - - VkBufferCreateInfo buffer_info{}; - buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO; - buffer_info.size = size_ * sizeof(float); - buffer_info.usage = usage_; - buffer_info.sharingMode = - shared ? VK_SHARING_MODE_CONCURRENT : VK_SHARING_MODE_EXCLUSIVE; - buffer_info.queueFamilyIndexCount = shared ? sharing_queue_count_ : 0; - buffer_info.pQueueFamilyIndices = shared ? sharing_queues_ : nullptr; - CHECK_VK_RESULT(d_.vkCreateBuffer(device_, &buffer_info, nullptr, &buffer_)); - - VkMemoryRequirements mem_req{}; - d_.vkGetBufferMemoryRequirements(device_, buffer_, &mem_req); - - uint32_t mem_index = - find_memory(phy_dev_mem_props_, mem_req, - host_visible_ ? VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | - VK_MEMORY_PROPERTY_HOST_COHERENT_BIT - : VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); - if (mem_index >= phy_dev_mem_props_.memoryTypeCount) - return vk::Result::eErrorMemoryMapFailed; - - VkMemoryAllocateInfo mem_info{}; - mem_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; - mem_info.allocationSize = mem_req.size; - mem_info.memoryTypeIndex = mem_index; - - CHECK_VK_RESULT( - d_.vkAllocateMemory(device_, &mem_info, nullptr, &buffer_mem_)); - CHECK_VK_RESULT(d_.vkBindBufferMemory(device_, buffer_, buffer_mem_, 0)); - - if (make_view_) { - if ((usage_ & VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT) || - (usage_ & VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT)) { - VkBufferViewCreateInfo view_info{}; - view_info.sType = VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO; - view_info.buffer = buffer_; - view_info.format = format_; - view_info.offset = 0; - view_info.range = VK_WHOLE_SIZE; - CHECK_VK_RESULT( - d_.vkCreateBufferView(device_, &view_info, nullptr, &view_)); - } - } - - return vk::Result::eSuccess; -} diff --git a/examples/vk-shadertoy/vk_buffer.h b/examples/vk-shadertoy/vk_buffer.h deleted file mode 100644 index c87cb8e..0000000 --- a/examples/vk-shadertoy/vk_buffer.h +++ /dev/null @@ -1,42 +0,0 @@ - -#pragma once - -#define VULKAN_HPP_NO_EXCEPTIONS 1 -#define VK_USE_PLATFORM_WAYLAND_KHR 1 -#define VULKAN_HPP_DISPATCH_LOADER_DYNAMIC 1 - -#include - -class VulkanBuffer { - public: - VulkanBuffer( - const vk::DispatchLoaderDynamic& dispatcher, - VkDevice device, - const VkPhysicalDeviceMemoryProperties& physical_device_memory_properties, - uint32_t size, - VkBufferUsageFlagBits usage); - - ~VulkanBuffer(); - - vk::Result create(); - - private: - const vk::DispatchLoaderDynamic& d_; - const VkPhysicalDeviceMemoryProperties& phy_dev_mem_props_; - VkDevice device_; - - VkFormat format_; - uint32_t size_; - - VkBufferUsageFlagBits usage_; - - bool make_view_{}; - bool host_visible_; - - uint32_t* sharing_queues_{}; - uint32_t sharing_queue_count_{}; - - VkBuffer buffer_{}; - VkDeviceMemory buffer_mem_{}; - VkBufferView view_{}; -}; diff --git a/examples/vk-shadertoy/vk_common.h b/examples/vk-shadertoy/vk_common.h deleted file mode 100644 index ece8785..0000000 --- a/examples/vk-shadertoy/vk_common.h +++ /dev/null @@ -1,26 +0,0 @@ - -#pragma once - -#define S1(x) #x -#define S2(x) S1(x) -#define LOCATION __FILE__ " : " S2(__LINE__) - -#define CHECK_VK_RESULT(x) \ - do { \ - vk::resultCheck(static_cast(x), LOCATION); \ - } while (0) - -static uint32_t find_memory(const VkPhysicalDeviceMemoryProperties& mem_props, - VkMemoryRequirements& mem_req, - VkMemoryPropertyFlags properties) { - for (uint32_t i = 0; i < mem_props.memoryTypeCount; ++i) { - if ((mem_req.memoryTypeBits & 1 << i) == 0) - continue; - if (mem_props.memoryHeaps[mem_props.memoryTypes[i].heapIndex].size < - mem_req.size) - continue; - if ((mem_props.memoryTypes[i].propertyFlags & properties) == properties) - return i; - } - return mem_props.memoryTypeCount; -} diff --git a/examples/vk-shadertoy/vk_image.cc b/examples/vk-shadertoy/vk_image.cc deleted file mode 100644 index 3063c81..0000000 --- a/examples/vk-shadertoy/vk_image.cc +++ /dev/null @@ -1,158 +0,0 @@ - -#include "vk_image.h" - -#include -#include "vk_common.h" - -VulkanImage::VulkanImage( - const vk::DispatchLoaderDynamic& dispatcher, - const VkPhysicalDevice& physical_device, - const VkDevice& device, - const VkPhysicalDeviceFeatures& physical_device_features, - const VkPhysicalDeviceProperties& physical_device_properties, - const VkPhysicalDeviceMemoryProperties& physical_device_memory_properties) - : d_(dispatcher), - device_(device), - physical_({ - .device = physical_device, - .features = physical_device_features, - .properties = physical_device_properties, - .memory_properties = physical_device_memory_properties, - }) {} - -VulkanImage::~VulkanImage() {} - -void VulkanImage::Create() { - VkResult res; - - image_ = nullptr; - image_mem_ = nullptr; - view_ = nullptr; - sampler_ = nullptr; - - VkImageTiling tiling = VK_IMAGE_TILING_OPTIMAL; - VkSampleCountFlagBits samples = VK_SAMPLE_COUNT_1_BIT; - VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED; - if (will_be_initialized_ || host_visible_) { - usage_ = static_cast( - usage_ & - (VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT)); - layout = VK_IMAGE_LAYOUT_PREINITIALIZED; - tiling = VK_IMAGE_TILING_LINEAR; - } else if (multisample_) { - VkImageFormatProperties format_properties; - res = d_.vkGetPhysicalDeviceImageFormatProperties( - physical_.device, format_, VK_IMAGE_TYPE_2D, tiling, usage_, 0, - &format_properties); - if (res != VK_SUCCESS) { - for (uint32_t s = VK_SAMPLE_COUNT_16_BIT; s != 0; s >>= 1) - if ((format_properties.sampleCounts & s)) { - samples = static_cast(s); - break; - } - } - } - - uint32_t mipLevels = 1; - if (mipmaps_) { - mipLevels = static_cast( - (log(std::max(extent_.width, extent_.height)) / log(2)) + 1); - } - - bool shared = sharing_queue_count_ > 1; - struct VkImageCreateInfo image_info {}; - image_info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO; - image_info.imageType = VK_IMAGE_TYPE_2D; - image_info.format = format_; - image_info.extent = {extent_.width, extent_.height, 1}; - image_info.mipLevels = mipLevels; - image_info.arrayLayers = 1; - image_info.samples = samples; - image_info.tiling = tiling; - image_info.usage = usage_; - image_info.sharingMode = - shared ? VK_SHARING_MODE_CONCURRENT : VK_SHARING_MODE_EXCLUSIVE; - image_info.queueFamilyIndexCount = shared ? sharing_queue_count_ : 0; - image_info.pQueueFamilyIndices = shared ? sharing_queues_ : nullptr; - image_info.initialLayout = layout; - - res = d_.vkCreateImage(device_, &image_info, nullptr, &image_); - if (res != VK_SUCCESS) - return; - - VkMemoryRequirements mem_req{}; - d_.vkGetImageMemoryRequirements(device_, image_, &mem_req); - uint32_t mem_index = - find_memory(physical_.memory_properties, mem_req, - host_visible_ ? VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | - VK_MEMORY_PROPERTY_HOST_COHERENT_BIT - : VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); - if (mem_index >= physical_.memory_properties.memoryTypeCount) - return; - - VkMemoryAllocateInfo mem_info{}; - mem_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; - mem_info.allocationSize = mem_req.size; - mem_info.memoryTypeIndex = mem_index; - res = d_.vkAllocateMemory(device_, &mem_info, nullptr, &image_mem_); - if (res != VK_SUCCESS) - return; - - res = d_.vkBindImageMemory(device_, image_, image_mem_, 0); - if (res != VK_SUCCESS) - return; - - if (make_view_) { - VkImageViewCreateInfo view_info{}; - view_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; - view_info.image = image_; - view_info.viewType = VK_IMAGE_VIEW_TYPE_2D; - view_info.format = format_; - view_info.components = { - VK_COMPONENT_SWIZZLE_R, - VK_COMPONENT_SWIZZLE_G, - VK_COMPONENT_SWIZZLE_B, - VK_COMPONENT_SWIZZLE_A, - }; - view_info.subresourceRange.aspectMask = static_cast( - (usage_ & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) == 0 - ? VK_IMAGE_ASPECT_COLOR_BIT - : VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT); - view_info.subresourceRange.baseMipLevel = 0; - view_info.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; - view_info.subresourceRange.baseArrayLayer = 0; - view_info.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; - - res = d_.vkCreateImageView(device_, &view_info, nullptr, &view_); - if (res != VK_SUCCESS) - return; - } - - if ((usage_ & VK_IMAGE_USAGE_SAMPLED_BIT)) { - VkSamplerCreateInfo sampler_info{}; - sampler_info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; - sampler_info.magFilter = linear_ ? VK_FILTER_LINEAR : VK_FILTER_NEAREST; - sampler_info.minFilter = linear_ ? VK_FILTER_LINEAR : VK_FILTER_NEAREST; - sampler_info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; - sampler_info.addressModeU = repeat_mode_; - sampler_info.addressModeV = repeat_mode_; - sampler_info.addressModeW = repeat_mode_; - sampler_info.anisotropyEnable = - anisotropyEnable_ && physical_.features.samplerAnisotropy; - sampler_info.maxAnisotropy = - physical_.properties.limits.maxSamplerAnisotropy; - sampler_info.minLod = 0; - sampler_info.maxLod = 1; - - if (mipmaps_) { - sampler_info.maxLod = static_cast(mipLevels); - sampler_info.mipLodBias = 0; - sampler_info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; - sampler_info.compareOp = VK_COMPARE_OP_ALWAYS; - } - - res = d_.vkCreateSampler(device_, &sampler_info, nullptr, &sampler_); - if (res != VK_SUCCESS) - return; - } -} diff --git a/examples/vk-shadertoy/vk_image.h b/examples/vk-shadertoy/vk_image.h deleted file mode 100644 index 90f0759..0000000 --- a/examples/vk-shadertoy/vk_image.h +++ /dev/null @@ -1,52 +0,0 @@ - -#pragma once - -#define VULKAN_HPP_NO_EXCEPTIONS 1 -#define VK_USE_PLATFORM_WAYLAND_KHR 1 -#define VULKAN_HPP_DISPATCH_LOADER_DYNAMIC 1 - -#include - -class VulkanImage { - public: - VulkanImage(const vk::DispatchLoaderDynamic& dispatcher, - const VkPhysicalDevice& physical_device, - const VkDevice& device, - const VkPhysicalDeviceFeatures& physical_device_features, - const VkPhysicalDeviceProperties& physical_device_properties, - const VkPhysicalDeviceMemoryProperties& - physical_device_memory_properties); - - ~VulkanImage(); - - void Create(); - - private: - const vk::DispatchLoaderDynamic& d_; - struct { - const VkPhysicalDevice& device; - const VkPhysicalDeviceFeatures& features; - const VkPhysicalDeviceProperties& properties; - const VkPhysicalDeviceMemoryProperties& memory_properties; - } physical_; - - VkDevice device_; - - VkFormat format_; - VkExtent2D extent_{}; - VkImageUsageFlagBits usage_; - bool make_view_{}; - bool will_be_initialized_{}; - bool host_visible_{}; - bool multisample_{}; - uint32_t* sharing_queues_{}; - uint32_t sharing_queue_count_{}; - VkImage image_{}; - VkDeviceMemory image_mem_{}; - VkImageView view_{}; - VkSampler sampler_{}; - bool anisotropyEnable_{}; - VkSamplerAddressMode repeat_mode_; - bool mipmaps_{}; - bool linear_{}; -}; \ No newline at end of file diff --git a/examples/vk-shadertoy/vulkan/common.h b/examples/vk-shadertoy/vulkan/common.h new file mode 100644 index 0000000..627fb6c --- /dev/null +++ b/examples/vk-shadertoy/vulkan/common.h @@ -0,0 +1,26 @@ + +#ifndef _LAUNCHER_VULKAN_COMMON_H_ +#define _LAUNCHER_VULKAN_COMMON_H_ + +#define S1(x) #x +#define S2(x) S1(x) +#define LOCATION __FILE__ " : " S2(__LINE__) + +#define CHECK_VK_RESULT(x) \ + do { \ + vk::resultCheck(static_cast(x), LOCATION); \ + } while (0) + + +#define VULKAN_HPP_NO_EXCEPTIONS 1 +#define VK_USE_PLATFORM_WAYLAND_KHR 1 +#define VULKAN_HPP_DISPATCH_LOADER_DYNAMIC 1 + +#include +#include +#include + +#include "vulkan/vk_struct.h" +#include "vulkan/vk_error_print.h" + +#endif // _LAUNCHER_VULKAN_COMMON_H_ diff --git a/examples/vk-shadertoy/vulkan/render.cc b/examples/vk-shadertoy/vulkan/render.cc new file mode 100644 index 0000000..8c03bd0 --- /dev/null +++ b/examples/vk-shadertoy/vulkan/render.cc @@ -0,0 +1,691 @@ + +#include "render.h" + +#include "utils.h" + +class VulkanUtils; + + +VulkanRender::VulkanRender() {} + +VulkanRender::~VulkanRender() {} + +int VulkanRender::get_essentials(struct vk_render_essentials *essentials, struct vk_physical_device *phy_dev, + struct vk_device *dev, struct vk_swapchain *swapchain) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + essentials->images = VulkanUtils::get_swapchain_images(dev, swapchain, &essentials->image_count); + if (essentials->images == NULL) + return -1; + + uint32_t *presentable_queues = NULL; + uint32_t presentable_queue_count = 0; + + retval = VulkanUtils::get_presentable_queues(phy_dev, dev, swapchain->surface, &presentable_queues, + &presentable_queue_count); + if (!vk_error_is_success(&retval) || presentable_queue_count == 0) { + printf("No presentable queue families! What kind of graphics card is this!\n"); + return -1; + } + + essentials->present_queue = dev->command_pools[presentable_queues[0]].queues[0]; + essentials->cmd_buffer = dev->command_pools[presentable_queues[0]].buffers[0]; + free(presentable_queues); + + VkSemaphoreCreateInfo sem_info = { + .sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO, + }; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateSemaphore(dev->device, &sem_info, NULL, &essentials->sem_post_acquire); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to create post-acquire semaphore\n"); + return -1; + } + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateSemaphore(dev->device, &sem_info, NULL, &essentials->sem_pre_submit); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to create pre-submit semaphore\n"); + return -1; + } + + VkFenceCreateInfo fence_info = { + .sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO, + }; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateFence(dev->device, &fence_info, NULL, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to create fence\n"); + return -1; + } + + essentials->first_render = true; + + return 0; +} + +void VulkanRender::cleanup_essentials(struct vk_render_essentials *essentials, struct vk_device *dev) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySemaphore(dev->device, essentials->sem_post_acquire, NULL); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySemaphore(dev->device, essentials->sem_pre_submit, NULL); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyFence(dev->device, essentials->exec_fence, NULL); + free(essentials->images); +} + +VkResult VulkanRender::start(struct vk_render_essentials *essentials, struct vk_device *dev, + struct vk_swapchain *swapchain, VkImageLayout to_layout, uint32_t *image_index) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkAcquireNextImageKHR(dev->device, swapchain->swapchain, 1000000000, essentials->sem_post_acquire, NULL, + image_index); + vk_error_set_vkresult(&retval, res); + if (res == VK_TIMEOUT) { + printf("A whole second and no image. I give up.\n"); + return res; + } else if (res == VK_SUBOPTIMAL_KHR) + printf("presentation is suboptimal.\n"); + else if (res == VK_ERROR_OUT_OF_DATE_KHR) { + // this is not error, this is resize event for AMD hardware + return res; + } else if (res < 0) { + vk_error_printf(&retval, "Couldn't acquire image\n"); + return res; + } + + if (!essentials->first_render) { + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Wait for fence failed\n"); + return res; + } + } + essentials->first_render = false; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkResetCommandBuffer(essentials->cmd_buffer, 0); + VkCommandBufferBeginInfo begin_info = { + .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, + .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't even begin recording a command buffer\n"); + return res; + } + + VkImageMemoryBarrier image_barrier = { + .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER, + .srcAccessMask = VK_ACCESS_MEMORY_READ_BIT, + .dstAccessMask = VK_ACCESS_MEMORY_WRITE_BIT, + .oldLayout = VK_IMAGE_LAYOUT_UNDEFINED, + .newLayout = to_layout, + .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .image = essentials->images[*image_index], + .subresourceRange = { + .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, + .baseMipLevel = 0, + .levelCount = 1, + .baseArrayLayer = 0, + .layerCount = 1, + }, + }; + + vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, + VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, + 0, + 0, NULL, + 0, NULL, + 1, &image_barrier); + + return VK_SUCCESS; +} + + +vk_error +VulkanRender::fill_object(struct vk_device *dev, VkDeviceMemory to, void *from, size_t size, const char *object, + const char *name) { + void *mem = NULL; + vk_error retval = VK_ERROR_NONE; + VkResult res; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkMapMemory(dev->device, to, 0, size, 0, &mem); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to map memory of the %s %s\n", name, object); + return retval; + } + + memcpy(mem, from, size); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkUnmapMemory(dev->device, to); + + return retval; +} + +vk_error VulkanRender::fill_buffer(struct vk_device *dev, struct vk_buffer *to, void *from, size_t size, + const char *name) { + return fill_object(dev, to->buffer_mem, from, size, "buffer", name); +} + +vk_error VulkanRender::fill_image(struct vk_device *dev, struct vk_image *to, void *from, size_t size, + const char *name) { + return fill_object(dev, to->image_mem, from, size, "image", name); +} + +vk_error +VulkanRender::copy_object_start(struct vk_device * /* dev */, struct vk_render_essentials *essentials, + const char *object, + const char *name) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkResetCommandBuffer(essentials->cmd_buffer, 0); + VkCommandBufferBeginInfo begin_info = { + .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, + .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) + vk_error_printf(&retval, "Couldn't begin recording a command buffer to copy the %s %s\n", name, object); + + return retval; +} + +vk_error VulkanRender::copy_object_end(struct vk_device *dev, struct vk_render_essentials *essentials) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkEndCommandBuffer(essentials->cmd_buffer); + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info = { + .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO, + .commandBufferCount = 1, + .pCommandBuffers = &essentials->cmd_buffer, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + + return retval; +} + +vk_error VulkanRender::copy_buffer(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_buffer *to, struct vk_buffer *from, size_t size, const char *name) { + vk_error retval = VK_ERROR_NONE; + + retval = copy_object_start(dev, essentials, "buffer", name); + if (!vk_error_is_success(&retval)) + return retval; + + VkBufferCopy copy_region = { + .srcOffset = 0, + .dstOffset = 0, + .size = size, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdCopyBuffer(essentials->cmd_buffer, from->buffer, to->buffer, 1, ©_region); + + return copy_object_end(dev, essentials); +} + +vk_error VulkanRender::copy_image(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *to, VkImageLayout to_layout, struct vk_image *from, + VkImageLayout from_layout, + VkImageCopy *region, const char *name) { + vk_error retval = VK_ERROR_NONE; + + retval = copy_object_start(dev, essentials, "image", name); + if (!vk_error_is_success(&retval)) + return retval; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdCopyImage(essentials->cmd_buffer, from->image, from_layout, to->image, to_layout, 1, region); + + return copy_object_end(dev, essentials); +} + +vk_error VulkanRender::copy_buffer_to_image(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *to, VkImageLayout to_layout, struct vk_buffer *from, + VkBufferImageCopy *region, const char *name) { + vk_error retval = VK_ERROR_NONE; + + retval = copy_object_start(dev, essentials, "image", name); + if (!vk_error_is_success(&retval)) + return retval; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdCopyBufferToImage(essentials->cmd_buffer, from->buffer, to->image, to_layout, 1, region); + + return copy_object_end(dev, essentials); +} + +vk_error VulkanRender::copy_image_to_buffer(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_buffer *to, struct vk_image *from, VkImageLayout from_layout, + VkBufferImageCopy *region, const char *name) { + vk_error retval = VK_ERROR_NONE; + + retval = copy_object_start(dev, essentials, "buffer", name); + if (!vk_error_is_success(&retval)) + return retval; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdCopyImageToBuffer(essentials->cmd_buffer, from->image, from_layout, to->buffer, 1, region); + + return copy_object_end(dev, essentials); +} + +vk_error VulkanRender::transition_images(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *images, uint32_t image_count, + VkImageLayout from, VkImageLayout to, VkImageAspectFlags aspect, + const char *name) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkResetCommandBuffer(essentials->cmd_buffer, 0); + + VkCommandBufferBeginInfo begin_info{}; + begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; + begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't begin recording a command buffer to transition the %s image\n", name); + return retval; + } + + VkImageMemoryBarrier image_barrier{}; + + image_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier.srcAccessMask = 0; + image_barrier.dstAccessMask = 0; + image_barrier.oldLayout = from; + image_barrier.newLayout = to; + image_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier.subresourceRange.aspectMask = aspect; + image_barrier.subresourceRange.baseMipLevel = 0; + image_barrier.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + image_barrier.subresourceRange.baseArrayLayer = 0; + image_barrier.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + for (uint32_t i = 0; i < image_count; ++i) { + image_barrier.image = images[i].image; + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, + VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, + 0, + 0, NULL, + 0, NULL, + 1, &image_barrier); + } + + VULKAN_HPP_DEFAULT_DISPATCHER.vkEndCommandBuffer(essentials->cmd_buffer); + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info{}; + submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; + submit_info.commandBufferCount = 1; + submit_info.pCommandBuffers = &essentials->cmd_buffer; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + + return retval; +} + +vk_error VulkanRender::create_staging_buffer(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_buffer *staging, + uint8_t *contents, size_t size, const char *name) { + vk_error retval = VK_ERROR_NONE; + + *staging = {}; + staging->size = static_cast(size); + staging->usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT; + staging->host_visible = true; + + retval = VulkanUtils::create_buffers(phy_dev, dev, staging, 1); + if (!vk_error_is_success(&retval)) { + vk_error_printf(&retval, "Failed to create staging %s buffer\n", name); + return retval; + } + + char staging_name[50]; + snprintf(staging_name, 50, "staging %s", name); + retval = fill_buffer(dev, staging, contents, size, staging_name); + + return retval; +} + +vk_error VulkanRender::transition_images_mipmaps(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_image *image, VkImageAspectFlags aspect, const char *name) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VkFormatProperties formatProperties; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceFormatProperties(phy_dev->physical_device, image->format, &formatProperties); + + if (!(formatProperties.optimalTilingFeatures & VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT)) { + printf("texture image format does not support linear blitting! %s image\n", name); + retval.error.type = VK_ERROR_ERRNO; + return retval; + } + + VULKAN_HPP_DEFAULT_DISPATCHER.vkResetCommandBuffer(essentials->cmd_buffer, 0); + VkCommandBufferBeginInfo begin_info{}; + begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; + begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBeginCommandBuffer(essentials->cmd_buffer, &begin_info); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Couldn't begin recording a command buffer to transition the %s image\n", name); + return retval; + } + + auto mipWidth = static_cast(image->extent.width); + auto mipHeight = static_cast(image->extent.height); + auto mipLevels = static_cast((log(std::min(image->extent.width, image->extent.height)) / log(2)) + 1); + + VkImageMemoryBarrier image_barrier{}; + image_barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER; + image_barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED; + image_barrier.image = image->image; + + image_barrier.subresourceRange.aspectMask = aspect; + image_barrier.subresourceRange.levelCount = 1; + image_barrier.subresourceRange.baseArrayLayer = 0; + image_barrier.subresourceRange.layerCount = 1; + + for (uint32_t i = 1; i < mipLevels; i++) { + image_barrier.subresourceRange.baseMipLevel = i - 1; + image_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + image_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + image_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + image_barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, + 0, NULL, + 0, NULL, + 1, &image_barrier); + + VkImageBlit blit = {0}; + blit.srcOffsets[0] = (struct VkOffset3D) {.x=0, .y=0, .z=0}; + blit.srcOffsets[1] = (struct VkOffset3D) {.x=mipWidth, .y=mipHeight, .z=1}; + blit.srcSubresource.aspectMask = aspect; + blit.srcSubresource.mipLevel = i - 1; + blit.srcSubresource.baseArrayLayer = 0; + blit.srcSubresource.layerCount = 1; + blit.dstOffsets[0] = (struct VkOffset3D) {.x=0, .y=0, .z=0}; + blit.dstOffsets[1] = (struct VkOffset3D) {.x=(mipWidth > 1 ? mipWidth / 2 : 1), .y=(mipHeight > 1 ? mipHeight / + 2 + : 1), .z=1}; + blit.dstSubresource.aspectMask = aspect; + blit.dstSubresource.mipLevel = i; + blit.dstSubresource.baseArrayLayer = 0; + blit.dstSubresource.layerCount = 1; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdBlitImage(essentials->cmd_buffer, + image->image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, + image->image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, + 1, &blit, + VK_FILTER_LINEAR); + + image_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL; + image_barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + image_barrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT; + image_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, + 0, NULL, + 0, NULL, + 1, &image_barrier); + + if (mipWidth > 1) mipWidth /= 2; + if (mipHeight > 1) mipHeight /= 2; + } + + image_barrier.subresourceRange.baseMipLevel = mipLevels - 1; + image_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL; + image_barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + image_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT; + image_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_TRANSFER_BIT, + VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, + 0, + 0, NULL, + 0, NULL, + 1, &image_barrier); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkEndCommandBuffer(essentials->cmd_buffer); + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return retval; + } + + VkSubmitInfo submit_info = { + .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO, + .commandBufferCount = 1, + .pCommandBuffers = &essentials->cmd_buffer, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkWaitForFences(dev->device, 1, &essentials->exec_fence, true, 1000000000); + vk_error_set_vkresult(&retval, res); + + return retval; +} + +vk_error VulkanRender::update_texture(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_image *image, VkImageLayout base_layout, uint8_t *contents, + const char *name) { + vk_error retval = VK_ERROR_NONE; + + struct vk_buffer staging; + retval = create_staging_buffer(phy_dev, dev, &staging, contents, + image->extent.width * image->extent.height * 4, name); + if (!vk_error_is_success(&retval)) + return retval; + + retval = transition_images(dev, essentials, image, 1, base_layout, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, + VK_IMAGE_ASPECT_COLOR_BIT, name); + if (!vk_error_is_success(&retval)) + return retval; + + VkBufferImageCopy image_copy = { + .imageSubresource = { + .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, + .layerCount = 1, + }, + .imageExtent = { + .width = image->extent.width, + .height = image->extent.height, + .depth = 1, + }, + }; + retval = copy_buffer_to_image(dev, essentials, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &staging, + &image_copy, name); + if (!vk_error_is_success(&retval)) + return retval; + retval = transition_images(dev, essentials, image, 1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, base_layout, + VK_IMAGE_ASPECT_COLOR_BIT, name); + if (!vk_error_is_success(&retval)) + return retval; + + VulkanUtils::free_buffers(dev, &staging, 1); + return retval; +} + +vk_error VulkanRender::init_texture(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_image *image, VkImageLayout layout, uint8_t *contents, const char *name) { + vk_error retval = VK_ERROR_NONE; + + struct vk_buffer staging; + retval = create_staging_buffer(phy_dev, dev, &staging, contents, + image->extent.width * image->extent.height * 4, name); + if (!vk_error_is_success(&retval)) + return retval; + + retval = transition_images(dev, essentials, image, 1, VK_IMAGE_LAYOUT_UNDEFINED, + VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_ASPECT_COLOR_BIT, name); + if (!vk_error_is_success(&retval)) + return retval; + + VkBufferImageCopy image_copy = { + .imageSubresource = { + .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, + .layerCount = 1, + }, + .imageExtent = { + .width = image->extent.width, + .height = image->extent.height, + .depth = 1, + }, + }; + + retval = copy_buffer_to_image(dev, essentials, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &staging, + &image_copy, name); + if (!vk_error_is_success(&retval)) + return retval; + + if (image->mipmaps) { + retval = transition_images_mipmaps(phy_dev, dev, essentials, image, VK_IMAGE_ASPECT_COLOR_BIT, name); + if (retval.error.type == VK_ERROR_ERRNO) + retval = transition_images(dev, essentials, image, 1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, + layout, VK_IMAGE_ASPECT_COLOR_BIT, name); + } else + retval = transition_images(dev, essentials, image, 1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, layout, + VK_IMAGE_ASPECT_COLOR_BIT, name); + + VulkanUtils::free_buffers(dev, &staging, 1); + return retval; +} + +vk_error VulkanRender::init_buffer(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_buffer *buffer, void *contents, const char *name) { + vk_error retval = VK_ERROR_NONE; + + struct vk_buffer staging; + retval = create_staging_buffer(phy_dev, dev, &staging, (uint8_t *) contents, buffer->size, name); + if (!vk_error_is_success(&retval)) + return retval; + + retval = copy_buffer(dev, essentials, buffer, &staging, buffer->size, name); + VulkanUtils::free_buffers(dev, &staging, 1); + + return retval; +} + + +int VulkanRender::finish(struct vk_render_essentials *essentials, struct vk_device *dev, + struct vk_swapchain *swapchain, VkImageLayout from_layout, uint32_t image_index, + VkSemaphore wait_sem, VkSemaphore signal_sem) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VkImageMemoryBarrier image_barrier = { + .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER, + .srcAccessMask = VK_ACCESS_MEMORY_WRITE_BIT, + .dstAccessMask = VK_ACCESS_MEMORY_READ_BIT, + .oldLayout = from_layout, + .newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR, + .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .image = essentials->images[image_index], + .subresourceRange = { + .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, + .baseMipLevel = 0, + .levelCount = 1, + .baseArrayLayer = 0, + .layerCount = 1, + }, + }; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkCmdPipelineBarrier(essentials->cmd_buffer, + VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT, + VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, + 0, + 0, NULL, + 0, NULL, + 1, &image_barrier); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkEndCommandBuffer(essentials->cmd_buffer); + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkResetFences(dev->device, 1, &essentials->exec_fence); + vk_error_set_vkresult(&retval, res); + if (res) { + vk_error_printf(&retval, "Failed to reset fence\n"); + return res; + } + + VkSemaphore wait_sems[2] = {essentials->sem_post_acquire, wait_sem}; + VkSemaphore signal_sems[2] = {essentials->sem_pre_submit, signal_sem}; + VkPipelineStageFlags wait_sem_stages[2] = {VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT}; + VkSubmitInfo submit_info = { + .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO, + .waitSemaphoreCount = wait_sem ? UINT32_C(2) : UINT32_C(1), + .pWaitSemaphores = wait_sems, + .pWaitDstStageMask = wait_sem_stages, + .commandBufferCount = 1, + .pCommandBuffers = &essentials->cmd_buffer, + .signalSemaphoreCount = signal_sem ? UINT32_C(2) : UINT32_C(1), + .pSignalSemaphores = signal_sems, + }; + VULKAN_HPP_DEFAULT_DISPATCHER.vkQueueSubmit(essentials->present_queue, 1, &submit_info, essentials->exec_fence); + + VkPresentInfoKHR present_info = { + .sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR, + .waitSemaphoreCount = 1, + .pWaitSemaphores = &essentials->sem_pre_submit, + .swapchainCount = 1, + .pSwapchains = &swapchain->swapchain, + .pImageIndices = &image_index, + }; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkQueuePresentKHR(essentials->present_queue, &present_info); + + if (res == VK_ERROR_OUT_OF_DATE_KHR) { + return VK_ERROR_OUT_OF_DATE_KHR; + } else if (res == VK_SUBOPTIMAL_KHR) { + return 0; + } else if (res == VK_ERROR_SURFACE_LOST_KHR) { + return VK_ERROR_SURFACE_LOST_KHR; + } else { + vk_error_set_vkresult(&retval, res); + if (res < 0) { + vk_error_printf(&retval, "Failed to queue image for presentation\n"); + return -1; + } + } + + return 0; +} diff --git a/examples/vk-shadertoy/vulkan/render.h b/examples/vk-shadertoy/vulkan/render.h new file mode 100644 index 0000000..12584a0 --- /dev/null +++ b/examples/vk-shadertoy/vulkan/render.h @@ -0,0 +1,90 @@ + +#ifndef _LAUNCHER_VULKAN_RENDER_H_ +#define _LAUNCHER_VULKAN_RENDER_H_ + +#include "common.h" + +#include "utils.h" + +#include "vk_error_print.h" + + +class VulkanUtils; + +class VulkanRender { +public: + VulkanRender(); + + ~VulkanRender(); + + static int get_essentials(struct vk_render_essentials *essentials, struct vk_physical_device *phy_dev, + struct vk_device *dev, struct vk_swapchain *swapchain); + + static void cleanup_essentials(struct vk_render_essentials *essentials, struct vk_device *dev); + + static VkResult start(struct vk_render_essentials *essentials, struct vk_device *dev, + struct vk_swapchain *swapchain, VkImageLayout to_layout, uint32_t *image_index); + + static vk_error + fill_object(struct vk_device *dev, VkDeviceMemory to, void *from, size_t size, const char *object, + const char *name); + + static vk_error fill_buffer(struct vk_device *dev, struct vk_buffer *to, void *from, size_t size, const char *name); + + static vk_error fill_image(struct vk_device *dev, struct vk_image *to, void *from, size_t size, const char *name); + + static vk_error + copy_object_start(struct vk_device * /* dev */, struct vk_render_essentials *essentials, const char *object, + const char *name); + + static vk_error copy_object_end(struct vk_device *dev, struct vk_render_essentials *essentials); + + static vk_error copy_buffer(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_buffer *to, struct vk_buffer *from, size_t size, const char *name); + + static vk_error copy_image(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *to, VkImageLayout to_layout, struct vk_image *from, + VkImageLayout from_layout, + VkImageCopy *region, const char *name); + + static vk_error copy_buffer_to_image(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *to, VkImageLayout to_layout, struct vk_buffer *from, + VkBufferImageCopy *region, const char *name); + + static vk_error copy_image_to_buffer(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_buffer *to, struct vk_image *from, VkImageLayout from_layout, + VkBufferImageCopy *region, const char *name); + + static vk_error transition_images(struct vk_device *dev, struct vk_render_essentials *essentials, + struct vk_image *images, uint32_t image_count, + VkImageLayout from, VkImageLayout to, VkImageAspectFlags aspect, + const char *name); + + static vk_error + create_staging_buffer(struct vk_physical_device *phy_dev, struct vk_device *dev, struct vk_buffer *staging, + uint8_t *contents, size_t size, const char *name); + + static vk_error transition_images_mipmaps(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_image *image, VkImageAspectFlags aspect, const char *name); + + static vk_error update_texture(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_image *image, VkImageLayout base_layout, uint8_t *contents, + const char *name); + + static vk_error init_texture(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_image *image, VkImageLayout layout, uint8_t *contents, const char *name); + + static vk_error init_buffer(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_render_essentials *essentials, + struct vk_buffer *buffer, void *contents, const char *name); + + + static int finish(struct vk_render_essentials *essentials, struct vk_device *dev, + struct vk_swapchain *swapchain, VkImageLayout from_layout, uint32_t image_index, + VkSemaphore wait_sem, VkSemaphore signal_sem); +}; + +#endif //_LAUNCHER_VULKAN_RENDER_H_ diff --git a/examples/vk-shadertoy/vulkan/utils.cc b/examples/vk-shadertoy/vulkan/utils.cc new file mode 100644 index 0000000..f77a2a6 --- /dev/null +++ b/examples/vk-shadertoy/vulkan/utils.cc @@ -0,0 +1,1570 @@ + +#include "utils.h" + +#include +#include + +#include "logging.h" + +VulkanUtils::VulkanUtils() {} + +VulkanUtils::~VulkanUtils() { + +} + +void VulkanUtils::exit(VkInstance vk) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyInstance(vk, nullptr); +} + +vk_error +VulkanUtils::enumerate_devices(VkInstance vk, VkSurfaceKHR *surface, struct vk_physical_device *devs, uint32_t *idx, + bool use_idx) { + + vk_error retval = VK_ERROR_NONE; + VkResult res; + uint32_t count = 0; + + bool last_use_idx = false; + uint32_t last_idx = 0; // last non DISCRETE_GPU + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkEnumeratePhysicalDevices(vk, &count, nullptr); + vk_error_set_vkresult(&retval, res); + if (res < 0) { + return retval; + } + if (count < 1) { + printf("No Vulkan device found.\n"); + vk_error_set_vkresult(&retval, VK_ERROR_INCOMPATIBLE_DRIVER); + return retval; + } + + VkPhysicalDevice *phy_devs; + phy_devs = (VkPhysicalDevice *) malloc(count * sizeof(VkPhysicalDevice)); + + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkEnumeratePhysicalDevices(vk, &count, phy_devs); + vk_error_set_vkresult(&retval, res); + if (res < 0) { + free(phy_devs); + phy_devs = nullptr; + return retval; + } + + for (uint32_t i = 0; i < count && (!use_idx); i++) { + uint32_t qfc = 0; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceQueueFamilyProperties(phy_devs[i], &qfc, nullptr); + if (qfc < 1)continue; + + VkQueueFamilyProperties *queue_family_properties; + queue_family_properties = (VkQueueFamilyProperties *) malloc(qfc * sizeof(VkQueueFamilyProperties)); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceQueueFamilyProperties(phy_devs[i], &qfc, + queue_family_properties); + + for (uint32_t j = 0; j < qfc; j++) { + VkBool32 supports_present; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceSurfaceSupportKHR(phy_devs[i], j, *surface, + &supports_present); + + if ((queue_family_properties[j].queueFlags & VK_QUEUE_GRAPHICS_BIT) && supports_present) { + VkPhysicalDeviceProperties pr; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceProperties(phy_devs[i], &pr); + if (pr.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) { + *idx = i; + use_idx = true; + } else { + last_use_idx = true; + last_idx = i; + } + break; + } + } + free(queue_family_properties); + } + + if (last_use_idx && (!use_idx)) { + use_idx = true; + *idx = last_idx; + } + + if (!use_idx) { + printf("Not found suitable queue which supports graphics.\n"); + vk_error_set_vkresult(&retval, VK_ERROR_INCOMPATIBLE_DRIVER); + free(phy_devs); + phy_devs = nullptr; + return retval; + } + if (*idx >= count) { + printf("Wrong GPU index %lu, max devices count %lu\n", (unsigned long) *idx, (unsigned long) count); + vk_error_set_vkresult(&retval, VK_ERROR_INCOMPATIBLE_DRIVER); + free(phy_devs); + phy_devs = nullptr; + return retval; + } + + printf("Using GPU device %lu\n", (unsigned long) *idx); + + devs[0].physical_device = phy_devs[*idx]; + + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceProperties(devs[0].physical_device, &devs[0].properties); + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceFeatures(devs[0].physical_device, &devs[0].features); + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceMemoryProperties(devs[0].physical_device, &devs[0].memories); + + printf("Vulkan GPU - %s: %s (id: 0x%04X) from vendor 0x%04X [driver version: 0x%04X, API version: 0x%04X]\n", + vk_VkPhysicalDeviceType_string(devs[0].properties.deviceType), devs[0].properties.deviceName, + devs[0].properties.deviceID, devs[0].properties.vendorID, devs[0].properties.driverVersion, + devs[0].properties.apiVersion); + + uint32_t qfc = 0; + devs[0].queue_family_count = kMaxQueueFamily; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceQueueFamilyProperties(devs[0].physical_device, &qfc, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceQueueFamilyProperties(devs[0].physical_device, + &devs[0].queue_family_count, + devs[0].queue_families); + + devs[0].queue_families_incomplete = devs[0].queue_family_count < qfc; + + free(phy_devs); + phy_devs = nullptr; + return retval; +} + + +vk_error +VulkanUtils::get_commands(struct vk_physical_device *phy_dev, struct vk_device *dev, + VkDeviceQueueCreateInfo queue_info[], + uint32_t queue_info_count, uint32_t create_count) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + bool create_num_cmd = false; //create many cmd buffers in one Queue + + if (create_count > 0) { + queue_info_count = 1; + create_num_cmd = true; + } + + dev->command_pools = (struct vk_commands *) malloc(queue_info_count * sizeof *dev->command_pools); + if (dev->command_pools == nullptr) { + vk_error_set_errno(&retval, errno); + return retval; + } + + for (uint32_t i = 0; i < queue_info_count; ++i) { + struct vk_commands *cmd = &dev->command_pools[i]; + *cmd = (struct vk_commands) {0}; + + cmd->qflags = phy_dev->queue_families[queue_info[i].queueFamilyIndex].queueFlags; + + VkCommandPoolCreateInfo pool_info{}; + pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; + pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT; + pool_info.queueFamilyIndex = queue_info[i].queueFamilyIndex; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateCommandPool(dev->device, &pool_info, nullptr, &cmd->pool); + vk_error_set_vkresult(&retval, res); + if (res < 0) + return retval; + ++dev->command_pool_count; + + cmd->queues = (VkQueue *) malloc(queue_info[i].queueCount * sizeof *cmd->queues); + if (!create_num_cmd) { + cmd->buffers = (VkCommandBuffer *) malloc(queue_info[i].queueCount * sizeof *cmd->buffers); + } else { + cmd->buffers = (VkCommandBuffer *) malloc(create_count * sizeof *cmd->buffers); + } + if (cmd->queues == nullptr || cmd->buffers == nullptr) { + vk_error_set_errno(&retval, errno); + return retval; + } + + for (uint32_t j = 0; j < queue_info[i].queueCount; ++j) + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetDeviceQueue(dev->device, queue_info[i].queueFamilyIndex, j, + &cmd->queues[j]); + cmd->queue_count = queue_info[i].queueCount; + + VkCommandBufferAllocateInfo buffer_info{}; + buffer_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; + buffer_info.commandPool = cmd->pool; + buffer_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; + buffer_info.commandBufferCount = create_num_cmd ? create_count : queue_info[i].queueCount; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkAllocateCommandBuffers(dev->device, &buffer_info, cmd->buffers); + vk_error_set_vkresult(&retval, res); + if (res) + return retval; + + cmd->buffer_count = create_num_cmd ? create_count : queue_info[i].queueCount; + } + return retval; + +} + +void VulkanUtils::cleanup(struct vk_device *dev) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < dev->command_pool_count; ++i) { + free(dev->command_pools[i].queues); + free(dev->command_pools[i].buffers); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyCommandPool(dev->device, dev->command_pools[i].pool, nullptr); + } + free(dev->command_pools); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyDevice(dev->device, nullptr); + + *dev = (struct vk_device) {}; +} + +vk_error VulkanUtils::load_shader(struct vk_device *dev, const uint32_t *code, VkShaderModule *shader, size_t size) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + VkShaderModuleCreateInfo info{}; + info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO; + info.codeSize = size; + info.pCode = code; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateShaderModule(dev->device, &info, nullptr, shader); + vk_error_set_vkresult(&retval, res); + + return retval; +} + +#ifdef YARIV_SHADER +vk_error vk_load_shader_yariv(struct vk_device *dev, const uint32_t *yariv_code, VkShaderModule *shader, size_t in_yariv_size) +{ + vk_error retval = VK_ERROR_NONE; + void *in_yariv = (void *)yariv_code; + size_t out_spirv_size = yariv_decode_size(in_yariv, in_yariv_size); + uint32_t *out_spirv = malloc(out_spirv_size); + yariv_decode(out_spirv, out_spirv_size, in_yariv, in_yariv_size); + retval = vk_load_shader(dev, out_spirv, shader, out_spirv_size); + + free(out_spirv); + return retval; +} +#endif + + +vk_error VulkanUtils::load_shader_spirv_file(struct vk_device *dev, const char *spirv_file, VkShaderModule *shader) { + vk_error retval = VK_ERROR_NONE; + + std::filesystem::path path = spirv_file; + if (path.empty() || !std::filesystem::exists(path)) { + spdlog::error("[load_shader_spirv_file] invalid path: {}", path.c_str()); + vk_error_set_errno(&retval, errno); + return retval; + } + + std::ifstream file(path, std::ios::binary | std::ios::ate); + if (!file.is_open()) { + spdlog::error("[load_shader_spirv_file] Failed to open: {}", path.c_str()); + vk_error_set_errno(&retval, errno); + return retval; + } + + const auto end = file.tellg(); + file.seekg(0, std::ios::beg); + auto file_size = static_cast(end - file.tellg()); + + std::vector buffer(file_size); + if (!file.read(reinterpret_cast(buffer.data()), + static_cast(buffer.size()))) { + buffer.clear(); + spdlog::error("[load_shader_spirv_file] Failed to read: [{}] {}", file_size, path.c_str()); + vk_error_set_errno(&retval, errno); + return retval; + } + + retval = load_shader(dev, reinterpret_cast(buffer.data()), shader, buffer.size()); + + return retval; +} + +void VulkanUtils::free_shader(struct vk_device *dev, VkShaderModule shader) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyShaderModule(dev->device, shader, nullptr); +} + +uint32_t VulkanUtils::find_suitable_memory(struct vk_physical_device *phy_dev, struct vk_device * /* dev */, + VkMemoryRequirements *mem_req, VkMemoryPropertyFlags properties) { + for (uint32_t i = 0; i < phy_dev->memories.memoryTypeCount; ++i) { + if ((mem_req->memoryTypeBits & 1 << i) == 0) + continue; + if (phy_dev->memories.memoryHeaps[phy_dev->memories.memoryTypes[i].heapIndex].size < mem_req->size) + continue; + if ((phy_dev->memories.memoryTypes[i].propertyFlags & properties) == properties) + return i; + } + + return phy_dev->memories.memoryTypeCount; +} + + +vk_error VulkanUtils::init_ext(VkInstance *vk, const char *ext_names[], uint32_t ext_count) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VkApplicationInfo app_info{}; + app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO; + app_info.pApplicationName = "Vulkan Shader launcher"; + app_info.applicationVersion = 0x010000; + app_info.pEngineName = "Vulkan Shader launcher"; + app_info.engineVersion = 0x010000; + app_info.apiVersion = VK_API_VERSION_1_0; + + VkInstanceCreateInfo info{}; + info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO; + info.pNext = nullptr; + info.pApplicationInfo = &app_info; + info.enabledLayerCount = 0; + info.ppEnabledLayerNames = nullptr; + info.enabledExtensionCount = ext_count; + info.ppEnabledExtensionNames = ext_names; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateInstance(&info, nullptr, vk); + vk_error_set_vkresult(&retval, res); + + VULKAN_HPP_DEFAULT_DISPATCHER.init(vk::Instance(*vk)); + + return retval; +} + +vk_error VulkanUtils::get_dev_ext(struct vk_physical_device *phy_dev, struct vk_device *dev, VkQueueFlags qflags, + VkDeviceQueueCreateInfo queue_info[], uint32_t *queue_info_count, + const char *ext_names[], uint32_t ext_count) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + *dev = (struct vk_device) {0}; + + uint32_t max_queue_count = *queue_info_count; + *queue_info_count = 0; + + uint32_t max_family_queues = 0; + for (uint32_t i = 0; i < phy_dev->queue_family_count; ++i) + if (max_family_queues < phy_dev->queue_families[i].queueCount) + max_family_queues = phy_dev->queue_families[i].queueCount; + float *queue_priorities; + int tsize = 0; + if (max_family_queues == 0) tsize = 1; + queue_priorities = (float *) malloc((max_family_queues + static_cast(tsize)) * (sizeof(float))); + memset(queue_priorities, 0, (max_family_queues + static_cast(tsize)) * (sizeof(float))); + + for (uint32_t i = 0; i < phy_dev->queue_family_count && i < max_queue_count; ++i) { + if ((phy_dev->queue_families[i].queueFlags & qflags) == 0) + continue; + + queue_info[(*queue_info_count)++] = (VkDeviceQueueCreateInfo) { + .sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO, + .queueFamilyIndex = i, + .queueCount = phy_dev->queue_families[i].queueCount, + .pQueuePriorities = queue_priorities, + }; + } + + if (*queue_info_count == 0) { + free(queue_priorities); + queue_priorities = nullptr; + vk_error_set_vkresult(&retval, VK_ERROR_FEATURE_NOT_PRESENT); + return retval; + } + + VkDeviceCreateInfo dev_info{}; + dev_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO; + dev_info.queueCreateInfoCount = *queue_info_count; + dev_info.pQueueCreateInfos = queue_info; + dev_info.enabledExtensionCount = ext_count; + dev_info.ppEnabledExtensionNames = ext_names; + dev_info.pEnabledFeatures = &phy_dev->features; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateDevice(phy_dev->physical_device, &dev_info, nullptr, &dev->device); + vk_error_set_vkresult(&retval, res); + + free(queue_priorities); + queue_priorities = nullptr; + return retval; +} + +vk_error VulkanUtils::create_surface(VkInstance vk, VkSurfaceKHR *surface, struct app_os_window *os_window) { + vk_error retval = VK_ERROR_NONE; + VkResult res; +#if defined(VK_USE_PLATFORM_WIN32_KHR) + VkWin32SurfaceCreateInfoKHR createInfo; + createInfo.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR; + createInfo.pNext = nullptr; + createInfo.flags = 0; + createInfo.hinstance = os_window->connection; + createInfo.hwnd = os_window->window; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateWin32SurfaceKHR(vk, &createInfo, NULL, surface); +#elif defined(VK_USE_PLATFORM_XCB_KHR) + VkXcbSurfaceCreateInfoKHR createInfo; + createInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR; + createInfo.pNext = nullptr; + createInfo.flags = 0; + createInfo.connection = os_window->connection; + createInfo.window = os_window->xcb_window; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateXcbSurfaceKHR(vk, &createInfo, NULL, surface); +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + VkWaylandSurfaceCreateInfoKHR createInfo{}; + createInfo.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR; + createInfo.pNext = nullptr; + createInfo.flags = 0; + createInfo.display = os_window->wl_display; + createInfo.surface = os_window->wl_surface; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateWaylandSurfaceKHR(vk, &createInfo, nullptr, surface); +#endif + vk_error_set_vkresult(&retval, res); + return retval; +} + +vk_error VulkanUtils::get_swapchain(VkInstance /* vk */, struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_swapchain *swapchain, struct app_os_window *os_window, + uint32_t thread_count, + VkPresentModeKHR *present_mode) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VkSwapchainKHR oldSwapchain = swapchain->swapchain; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceSurfaceCapabilitiesKHR(phy_dev->physical_device, + swapchain->surface, + &swapchain->surface_caps); + vk_error_set_vkresult(&retval, res); + if (res) + return retval; + + uint32_t image_count = swapchain->surface_caps.minImageCount + thread_count - 1; + if (swapchain->surface_caps.maxImageCount < image_count && swapchain->surface_caps.maxImageCount != 0) + image_count = swapchain->surface_caps.maxImageCount; + + uint32_t surface_format_count = 1; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceSurfaceFormatsKHR(phy_dev->physical_device, + swapchain->surface, &surface_format_count, + nullptr); + vk_error_set_vkresult(&retval, res); + if (res < 0) + return retval; + if (surface_format_count < 1) { + retval.error.type = VK_ERROR_ERRNO; + vk_error_printf(&retval, "surface_format_count < 1\n"); + return retval; + } + + VkSurfaceFormatKHR surface_format[184]; + if (surface_format_count >= 184) surface_format_count = 184 - 1; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceSurfaceFormatsKHR(phy_dev->physical_device, + swapchain->surface, &surface_format_count, + &surface_format[0]); + + vk_error_set_vkresult(&retval, res); + if (res < 0) + return retval; + + swapchain->surface_format = surface_format[0]; + + if (surface_format_count > 1) { + uint32_t suported_format_srgb = VK_FORMAT_B8G8R8A8_SRGB; + int found_srgb = -1; + uint32_t suported_format_linear = VK_FORMAT_B8G8R8A8_UNORM; + int found_linear = -1; + + for (int i = 0; i < surface_format_count; i++) { + if (surface_format[i].format == suported_format_srgb)found_srgb = i; + if (surface_format[i].format == suported_format_linear)found_linear = i; + } + + if (found_linear >= 0)swapchain->surface_format = surface_format[found_linear]; + else if (found_srgb >= 0)swapchain->surface_format = surface_format[found_srgb]; + } + + if (surface_format_count == 1 && swapchain->surface_format.format == VK_FORMAT_UNDEFINED) + swapchain->surface_format.format = VK_FORMAT_R8G8B8_UNORM; + + swapchain->present_modes_count = kMaxPresentModes; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceSurfacePresentModesKHR(phy_dev->physical_device, + swapchain->surface, + &swapchain->present_modes_count, + swapchain->present_modes); + vk_error_set_vkresult(&retval, res); + if (res >= 0) { + bool tret = false; + for (uint32_t i = 0; i < swapchain->present_modes_count; ++i) { + if (swapchain->present_modes[i] == *present_mode) { + tret = true; + break; + } + } + if (!tret) { + bool a = false, b = false, c = false; + for (uint32_t i = 0; i < swapchain->present_modes_count; ++i) { + if (swapchain->present_modes[i] == VK_PRESENT_MODE_IMMEDIATE_KHR) { + c = true; + } + if (swapchain->present_modes[i] == VK_PRESENT_MODE_MAILBOX_KHR) { + b = true; + } + if (swapchain->present_modes[i] == VK_PRESENT_MODE_FIFO_KHR) { + a = true; + } + } + if (a)*present_mode = VK_PRESENT_MODE_FIFO_KHR; + else if (b)*present_mode = VK_PRESENT_MODE_MAILBOX_KHR; + else if (c)*present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR; + + } + } + + VkExtent2D swapchainExtent; + VkImageFormatProperties format_properties; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceImageFormatProperties(phy_dev->physical_device, + swapchain->surface_format.format, + VK_IMAGE_TYPE_2D, + VK_IMAGE_TILING_OPTIMAL, + VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, 0, + &format_properties); + if (res == VK_SUCCESS + && (format_properties.maxExtent.width >= swapchain->surface_caps.currentExtent.width && + format_properties.maxExtent.height >= swapchain->surface_caps.currentExtent.height) + || (swapchain->surface_caps.currentExtent.width == 0xFFFFFFFF) + ) { + if (swapchain->surface_caps.currentExtent.width == 0xFFFFFFFF) { + swapchainExtent.width = static_cast(os_window->app_data.iResolution[0]); + swapchainExtent.height = static_cast(os_window->app_data.iResolution[1]); + + if (swapchainExtent.width < swapchain->surface_caps.minImageExtent.width) { + swapchainExtent.width = swapchain->surface_caps.minImageExtent.width; + } else if (swapchainExtent.width > swapchain->surface_caps.maxImageExtent.width) { + swapchainExtent.width = swapchain->surface_caps.maxImageExtent.width; + } + + if (swapchainExtent.height < swapchain->surface_caps.minImageExtent.height) { + swapchainExtent.height = swapchain->surface_caps.minImageExtent.height; + } else if (swapchainExtent.height > swapchain->surface_caps.maxImageExtent.height) { + swapchainExtent.height = swapchain->surface_caps.maxImageExtent.height; + } + } else { + swapchainExtent = swapchain->surface_caps.currentExtent; + os_window->app_data.iResolution[0] = static_cast(swapchain->surface_caps.currentExtent.width); + os_window->app_data.iResolution[1] = static_cast(swapchain->surface_caps.currentExtent.height); + } + } else { + printf("Error: too large resolution, currentExtent width, height: %lu, %lu; iResolution.xy: %lu, %lu; maxExtent width, height: %lu, %lu \n", + (unsigned long) swapchain->surface_caps.currentExtent.width, + (unsigned long) swapchain->surface_caps.currentExtent.height, + (unsigned long) os_window->app_data.iResolution[0], (unsigned long) os_window->app_data.iResolution[1], + (unsigned long) format_properties.maxExtent.width, (unsigned long) format_properties.maxExtent.height); + os_window->app_data.iResolution[0] = static_cast(swapchain->surface_caps.currentExtent.width); + os_window->app_data.iResolution[1] = static_cast(swapchain->surface_caps.currentExtent.height); + if (format_properties.maxExtent.width < swapchain->surface_caps.currentExtent.width) + os_window->app_data.iResolution[0] = static_cast(format_properties.maxExtent.width); + if (format_properties.maxExtent.height < swapchain->surface_caps.currentExtent.height) + os_window->app_data.iResolution[1] = static_cast(format_properties.maxExtent.height); + swapchainExtent.width = static_cast(os_window->app_data.iResolution[0]); + swapchainExtent.height = static_cast(os_window->app_data.iResolution[1]); + } + + if (os_window->app_data.iResolution[0] <= 0 || os_window->app_data.iResolution[1] <= 0) { + os_window->is_minimized = true; + return VK_ERROR_NONE; + } else { + os_window->is_minimized = false; + } + + VkSwapchainCreateInfoKHR swapchain_info{}; + swapchain_info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR; + swapchain_info.pNext = nullptr; + swapchain_info.flags = 0; // bug https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/4274 + swapchain_info.surface = swapchain->surface; + swapchain_info.minImageCount = image_count; + swapchain_info.imageFormat = swapchain->surface_format.format; + swapchain_info.imageColorSpace = swapchain->surface_format.colorSpace; + swapchain_info.imageExtent.width = swapchainExtent.width; + swapchain_info.imageExtent.height = swapchainExtent.height; + swapchain_info.imageArrayLayers = 1; + swapchain_info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT; + swapchain_info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; + swapchain_info.preTransform = swapchain->surface_caps.currentTransform; + swapchain_info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; + swapchain_info.presentMode = *present_mode; + swapchain_info.clipped = true; + swapchain_info.oldSwapchain = oldSwapchain; + + if (swapchain->surface_caps.supportedUsageFlags & VK_IMAGE_USAGE_TRANSFER_SRC_BIT) { + swapchain_info.imageUsage |= VK_IMAGE_USAGE_TRANSFER_SRC_BIT; + } + + uint32_t *presentable_queues = nullptr; + uint32_t presentable_queue_count = 0; + + retval = get_presentable_queues(phy_dev, dev, swapchain->surface, &presentable_queues, &presentable_queue_count); + if (!vk_error_is_success(&retval) || presentable_queue_count == 0) + return retval; + free(presentable_queues); + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateSwapchainKHR(dev->device, &swapchain_info, nullptr, + &swapchain->swapchain); + vk_error_set_vkresult(&retval, res); + + if (oldSwapchain != VK_NULL_HANDLE) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySwapchainKHR(dev->device, oldSwapchain, nullptr); + } + + return retval; +} + +void VulkanUtils::free_swapchain(VkInstance vk, struct vk_device *dev, struct vk_swapchain *swapchain) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySwapchainKHR(dev->device, swapchain->swapchain, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySurfaceKHR(vk, swapchain->surface, nullptr); + + *swapchain = (struct vk_swapchain) {}; +} + +VkImage *VulkanUtils::get_swapchain_images(struct vk_device *dev, struct vk_swapchain *swapchain, uint32_t *count) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + uint32_t image_count; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetSwapchainImagesKHR(dev->device, swapchain->swapchain, &image_count, + nullptr); + vk_error_set_vkresult(&retval, res); + if (res < 0) { + vk_error_printf(&retval, "Failed to count the number of images in swapchain\n"); + return nullptr; + } + + VkImage *images = (VkImage *) malloc(image_count * sizeof *images); + if (images == nullptr) { + printf("Out of memory\n"); + return nullptr; + } + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetSwapchainImagesKHR(dev->device, swapchain->swapchain, &image_count, + images); + vk_error_set_vkresult(&retval, res); + if (res < 0) { + vk_error_printf(&retval, "Failed to get the images in swapchain\n"); + return nullptr; + } + + if (count) + *count = image_count; + return images; +} + +vk_error VulkanUtils::create_images(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_image *images, uint32_t image_count) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + VkResult res; + + for (uint32_t i = 0; i < image_count; ++i) { + images[i].image = nullptr; + images[i].image_mem = nullptr; + images[i].view = nullptr; + images[i].sampler = nullptr; + + VkImageTiling tiling = VK_IMAGE_TILING_OPTIMAL; + VkSampleCountFlagBits samples = VK_SAMPLE_COUNT_1_BIT; + VkImageLayout layout = VK_IMAGE_LAYOUT_UNDEFINED; + if (images[i].will_be_initialized || images[i].host_visible) { + images[i].usage = (VkImageUsageFlagBits) ( + images[i].usage & (VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT)); + layout = VK_IMAGE_LAYOUT_PREINITIALIZED; + tiling = VK_IMAGE_TILING_LINEAR; + } else if (images[i].multisample) { + VkImageFormatProperties format_properties; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceImageFormatProperties(phy_dev->physical_device, + images[i].format, + VK_IMAGE_TYPE_2D, + tiling, images[i].usage, 0, + &format_properties); + vk_error_sub_set_vkresult(&retval, res); + if (res == 0) { + for (uint32_t s = VK_SAMPLE_COUNT_16_BIT; s != 0; s >>= 1) + if ((format_properties.sampleCounts & s)) { + samples = (VkSampleCountFlagBits) s; + break; + } + } + } + + uint32_t mipLevels = 1; + if (images[i].mipmaps) { + mipLevels = + static_cast(log(std::max(images[i].extent.width, images[i].extent.height)) / log(2)) + 1; + } + + bool shared = images[i].sharing_queue_count > 1; + struct VkImageCreateInfo image_info{}; + image_info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO; + image_info.imageType = VK_IMAGE_TYPE_2D; + image_info.format = images[i].format; + image_info.extent = {images[i].extent.width, images[i].extent.height, 1}; + image_info.mipLevels = mipLevels; + image_info.arrayLayers = 1; + image_info.samples = samples; + image_info.tiling = tiling; + image_info.usage = images[i].usage; + image_info.sharingMode = shared ? VK_SHARING_MODE_CONCURRENT : VK_SHARING_MODE_EXCLUSIVE; + image_info.queueFamilyIndexCount = shared ? images[i].sharing_queue_count : 0; + image_info.pQueueFamilyIndices = shared ? images[i].sharing_queues : nullptr; + image_info.initialLayout = layout; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateImage(dev->device, &image_info, nullptr, &images[i].image); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + VkMemoryRequirements mem_req{}; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetImageMemoryRequirements(dev->device, images[i].image, &mem_req); + uint32_t mem_index = find_suitable_memory(phy_dev, dev, &mem_req, + images[i].host_visible ? + VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | + VK_MEMORY_PROPERTY_HOST_COHERENT_BIT : + VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); + if (mem_index >= phy_dev->memories.memoryTypeCount) + continue; + + VkMemoryAllocateInfo mem_info{}; + mem_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; + mem_info.allocationSize = mem_req.size; + mem_info.memoryTypeIndex = mem_index; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkAllocateMemory(dev->device, &mem_info, nullptr, &images[i].image_mem); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBindImageMemory(dev->device, images[i].image, images[i].image_mem, 0); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + if (images[i].make_view) { + VkImageViewCreateInfo view_info{}; + view_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; + view_info.image = images[i].image; + view_info.viewType = VK_IMAGE_VIEW_TYPE_2D; + view_info.format = images[i].format; + view_info.components = {VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, + VK_COMPONENT_SWIZZLE_A,}; + view_info.subresourceRange.aspectMask = static_cast( + (images[i].usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) == 0 ? + VK_IMAGE_ASPECT_COLOR_BIT : + VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT); + view_info.subresourceRange.baseMipLevel = 0; + view_info.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + view_info.subresourceRange.baseArrayLayer = 0; + view_info.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateImageView(dev->device, &view_info, nullptr, &images[i].view); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + } + + if ((images[i].usage & VK_IMAGE_USAGE_SAMPLED_BIT)) { + VkSamplerCreateInfo sampler_info{}; + sampler_info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO; + sampler_info.magFilter = images[i].linear ? VK_FILTER_LINEAR : VK_FILTER_NEAREST; + sampler_info.minFilter = images[i].linear ? VK_FILTER_LINEAR : VK_FILTER_NEAREST; + sampler_info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; + sampler_info.addressModeU = images[i].repeat_mode; + sampler_info.addressModeV = images[i].repeat_mode; + sampler_info.addressModeW = images[i].repeat_mode; + sampler_info.anisotropyEnable = images[i].anisotropyEnable && phy_dev->features.samplerAnisotropy; // false + sampler_info.maxAnisotropy = phy_dev->properties.limits.maxSamplerAnisotropy; + sampler_info.minLod = 0; + sampler_info.maxLod = 1; + + if (images[i].mipmaps) { + sampler_info.maxLod = (float) mipLevels; + sampler_info.mipLodBias = 0; + sampler_info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR; + sampler_info.compareOp = VK_COMPARE_OP_ALWAYS; + } + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateSampler(dev->device, &sampler_info, nullptr, + &images[i].sampler); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + } + + ++successful; + } + + vk_error_set_vkresult(&retval, successful == image_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + +vk_error VulkanUtils::create_buffers(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_buffer *buffers, uint32_t buffer_count) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + VkResult res; + + for (uint32_t i = 0; i < buffer_count; ++i) { + buffers[i].buffer = nullptr; + buffers[i].buffer_mem = nullptr; + buffers[i].view = nullptr; + + bool shared = buffers[i].sharing_queue_count > 1; + + VkBufferCreateInfo buffer_info{}; + buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO; + buffer_info.size = buffers[i].size * sizeof(float); + buffer_info.usage = buffers[i].usage; + buffer_info.sharingMode = shared ? VK_SHARING_MODE_CONCURRENT : VK_SHARING_MODE_EXCLUSIVE; + buffer_info.queueFamilyIndexCount = shared ? buffers[i].sharing_queue_count : 0; + buffer_info.pQueueFamilyIndices = shared ? buffers[i].sharing_queues : nullptr; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateBuffer(dev->device, &buffer_info, nullptr, &buffers[i].buffer); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + VkMemoryRequirements mem_req{}; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetBufferMemoryRequirements(dev->device, buffers[i].buffer, &mem_req); + uint32_t mem_index = find_suitable_memory(phy_dev, dev, &mem_req, + buffers[i].host_visible ? + VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | + VK_MEMORY_PROPERTY_HOST_COHERENT_BIT : + VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT); + if (mem_index >= phy_dev->memories.memoryTypeCount) + continue; + + VkMemoryAllocateInfo mem_info{}; + mem_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO; + mem_info.allocationSize = mem_req.size; + mem_info.memoryTypeIndex = mem_index; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkAllocateMemory(dev->device, &mem_info, nullptr, &buffers[i].buffer_mem); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkBindBufferMemory(dev->device, buffers[i].buffer, buffers[i].buffer_mem, + 0); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + if (buffers[i].make_view) { + if ((buffers[i].usage & VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT) || + (buffers[i].usage & VK_BUFFER_USAGE_STORAGE_TEXEL_BUFFER_BIT)) { + VkBufferViewCreateInfo view_info{}; + view_info.sType = VK_STRUCTURE_TYPE_BUFFER_VIEW_CREATE_INFO; + view_info.buffer = buffers[i].buffer; + view_info.format = buffers[i].format; + view_info.offset = 0; + view_info.range = VK_WHOLE_SIZE; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateBufferView(dev->device, &view_info, nullptr, + &buffers[i].view); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + } + } + + ++successful; + } + + vk_error_set_vkresult(&retval, successful == buffer_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + +vk_error VulkanUtils::load_shaders(struct vk_device *dev, + struct vk_shader *shaders, uint32_t shader_count) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + vk_error err; + + for (uint32_t i = 0; i < shader_count; ++i) { + err = load_shader_spirv_file(dev, shaders[i].spirv_file, &shaders[i].shader); + vk_error_sub_merge(&retval, &err); + if (!vk_error_is_success(&err)) + continue; + + ++successful; + } + + vk_error_set_vkresult(&retval, successful == shader_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + + +vk_error VulkanUtils::get_presentable_queues(struct vk_physical_device *phy_dev, struct vk_device *dev, + VkSurfaceKHR surface, uint32_t **presentable_queues, + uint32_t *presentable_queue_count) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + *presentable_queues = (uint32_t *) malloc(dev->command_pool_count * sizeof **presentable_queues); + if (*presentable_queues == nullptr) { + vk_error_set_errno(&retval, errno); + return retval; + } + *presentable_queue_count = 0; + + for (uint32_t i = 0; i < dev->command_pool_count; ++i) { + VkBool32 supports = false; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceSurfaceSupportKHR(phy_dev->physical_device, i, surface, + &supports); + vk_error_sub_set_vkresult(&retval, res); + if (res || !supports) + continue; + + (*presentable_queues)[(*presentable_queue_count)++] = i; + } + + if (*presentable_queue_count == 0) { + free(*presentable_queues); + *presentable_queues = nullptr; + } + + vk_error_set_vkresult(&retval, *presentable_queue_count == 0 ? VK_ERROR_INCOMPATIBLE_DRIVER : VK_SUCCESS); + + return retval; +} + +VkFormat VulkanUtils::get_supported_depth_stencil_format(struct vk_physical_device *phy_dev) { + VkFormat depth_formats[] = { + VK_FORMAT_D32_SFLOAT_S8_UINT, + VK_FORMAT_D32_SFLOAT, + VK_FORMAT_D24_UNORM_S8_UINT, + VK_FORMAT_X8_D24_UNORM_PACK32, + VK_FORMAT_D16_UNORM, + }; + VkFormat selected_format = VK_FORMAT_UNDEFINED; + + for (size_t i = 0; i < sizeof depth_formats / sizeof *depth_formats; ++i) { + VkFormatProperties format_properties; + VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceFormatProperties(phy_dev->physical_device, depth_formats[i], + &format_properties); + if ((format_properties.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT)) { + selected_format = depth_formats[i]; + break; + } + } + + return selected_format; +} + +void VulkanUtils::free_images(struct vk_device *dev, struct vk_image *images, uint32_t image_count) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < image_count; ++i) { + if (images[i].view)VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyImageView(dev->device, images[i].view, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyImage(dev->device, images[i].image, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkFreeMemory(dev->device, images[i].image_mem, nullptr); + if (images[i].sampler)VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroySampler(dev->device, images[i].sampler, nullptr); + } +} + +void VulkanUtils::free_buffers(struct vk_device *dev, struct vk_buffer *buffers, uint32_t buffer_count) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < buffer_count; ++i) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyBufferView(dev->device, buffers[i].view, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyBuffer(dev->device, buffers[i].buffer, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkFreeMemory(dev->device, buffers[i].buffer_mem, nullptr); + } +} + +void VulkanUtils::free_shaders(struct vk_device *dev, struct vk_shader *shaders, uint32_t shader_count) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < shader_count; ++i) + free_shader(dev, shaders[i].shader); +} + +void VulkanUtils::free_graphics_buffers(struct vk_device *dev, struct vk_graphics_buffers *graphics_buffers, + uint32_t graphics_buffer_count, + VkRenderPass render_pass) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < graphics_buffer_count; ++i) { + free_images(dev, &graphics_buffers[i].depth, 1); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyImageView(dev->device, graphics_buffers[i].color_view, nullptr); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyFramebuffer(dev->device, graphics_buffers[i].framebuffer, nullptr); + } + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyRenderPass(dev->device, render_pass, nullptr); +} + + +vk_error VulkanUtils::make_graphics_layouts(struct vk_device *dev, struct vk_layout *layouts, uint32_t layout_count, + bool w_img_pattern, uint32_t *img_pattern, uint32_t img_pattern_size) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + VkResult res; + + for (uint32_t i = 0; i < layout_count; ++i) { + struct vk_layout *layout = &layouts[i]; + struct vk_resources *resources = layout->resources; + + layout->set_layout = nullptr; + layout->pipeline_layout = nullptr; + + VkDescriptorSetLayoutBinding *set_layout_bindings; + if (w_img_pattern) { + set_layout_bindings = (VkDescriptorSetLayoutBinding *) malloc( + (img_pattern_size + resources->buffer_count) * sizeof(VkDescriptorSetLayoutBinding)); + } else { + set_layout_bindings = (VkDescriptorSetLayoutBinding *) malloc( + (resources->image_count + resources->buffer_count) * sizeof(VkDescriptorSetLayoutBinding)); + } + uint32_t binding_count = 0; + uint32_t tidx = 0; + for (uint32_t j = 0; j < (w_img_pattern ? img_pattern_size : resources->image_count); ++j) { + if ((resources->images[(w_img_pattern ? tidx : j)].usage & + (VK_IMAGE_USAGE_STORAGE_BIT | VK_IMAGE_USAGE_SAMPLED_BIT)) == 0) + continue; + tidx = 0; + if (w_img_pattern) { + for (int tj = 0; tj < j; tj++)tidx += img_pattern[tj]; + } + set_layout_bindings[binding_count] = {}; + set_layout_bindings[binding_count].binding = w_img_pattern ? tidx : binding_count; + set_layout_bindings[binding_count].descriptorType = + resources->images[(w_img_pattern ? tidx : j)].usage & VK_IMAGE_USAGE_SAMPLED_BIT ? + VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER : + VK_DESCRIPTOR_TYPE_STORAGE_IMAGE; + set_layout_bindings[binding_count].descriptorCount = (w_img_pattern ? img_pattern[j] : 1); + set_layout_bindings[binding_count].stageFlags = resources->images[j].stage; + + ++binding_count; + } + + for (uint32_t j = 0; j < resources->buffer_count; ++j) { + if ((resources->buffers[j].usage & + (VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT)) == 0) + continue; + if (w_img_pattern)tidx++; + set_layout_bindings[binding_count] = {}; + set_layout_bindings[binding_count].binding = w_img_pattern ? tidx : binding_count; + set_layout_bindings[binding_count].descriptorType = + resources->buffers[j].usage & VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT ? + VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER : + VK_DESCRIPTOR_TYPE_STORAGE_BUFFER; + set_layout_bindings[binding_count].descriptorCount = 1; + set_layout_bindings[binding_count].stageFlags = resources->buffers[j].stage; + + ++binding_count; + } + + VkDescriptorSetLayoutCreateInfo set_layout_info{}; + set_layout_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO; + set_layout_info.bindingCount = binding_count; + set_layout_info.pBindings = set_layout_bindings; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateDescriptorSetLayout(dev->device, &set_layout_info, nullptr, + &layout->set_layout); + vk_error_sub_set_vkresult(&retval, res); + if (res) { + free(set_layout_bindings); + set_layout_bindings = nullptr; + continue; + } + + VkPipelineLayoutCreateInfo pipeline_layout_info{}; + pipeline_layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO; + pipeline_layout_info.setLayoutCount = 1; + pipeline_layout_info.pSetLayouts = &layout->set_layout; + pipeline_layout_info.pushConstantRangeCount = resources->push_constant_count; + pipeline_layout_info.pPushConstantRanges = resources->push_constants; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreatePipelineLayout(dev->device, &pipeline_layout_info, nullptr, + &layout->pipeline_layout); + vk_error_sub_set_vkresult(&retval, res); + if (res) { + free(set_layout_bindings); + set_layout_bindings = nullptr; + continue; + } + + free(set_layout_bindings); + set_layout_bindings = nullptr; + ++successful; + } + + vk_error_set_vkresult(&retval, successful == layout_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + +vk_error +VulkanUtils::make_graphics_pipelines(struct vk_device *dev, struct vk_pipeline *pipelines, uint32_t pipeline_count, + bool is_blend) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + VkResult res; + + for (uint32_t i = 0; i < pipeline_count; ++i) { + struct vk_pipeline *pipeline = &pipelines[i]; + struct vk_layout *layout = pipeline->layout; + struct vk_resources *resources = layout->resources; + + pipeline->pipeline = nullptr; + pipeline->set_pool = nullptr; + + VkGraphicsPipelineCreateInfo pipeline_info{}; + + bool has_tessellation_shader = false; + VkPipelineShaderStageCreateInfo *stage_info; + stage_info = (VkPipelineShaderStageCreateInfo *) malloc( + resources->shader_count * sizeof(VkPipelineShaderStageCreateInfo)); + for (uint32_t j = 0; j < resources->shader_count; ++j) { + struct vk_shader *shader = &resources->shaders[j]; + + stage_info[j] = {}; + stage_info[j].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO; + stage_info[j].stage = shader->stage; + stage_info[j].module = shader->shader; + stage_info[j].pName = "main"; + + if (shader->stage == VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT || + shader->stage == VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT) + has_tessellation_shader = true; + } + + VkPipelineViewportStateCreateInfo viewport_state{}; + viewport_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO; + viewport_state.viewportCount = 1; + viewport_state.scissorCount = 1; + + VkPipelineRasterizationStateCreateInfo rasterization_state{}; + rasterization_state.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO; + rasterization_state.polygonMode = VK_POLYGON_MODE_FILL; + rasterization_state.cullMode = VK_CULL_MODE_BACK_BIT; + rasterization_state.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE; + rasterization_state.lineWidth = 1; + + VkPipelineMultisampleStateCreateInfo multisample_state{}; + multisample_state.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO; + multisample_state.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT; + + VkPipelineDepthStencilStateCreateInfo depth_stencil_state{}; + depth_stencil_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO; + depth_stencil_state.depthTestEnable = true; + depth_stencil_state.depthWriteEnable = true; + depth_stencil_state.depthCompareOp = VK_COMPARE_OP_GREATER_OR_EQUAL; + + VkPipelineColorBlendAttachmentState color_blend_attachments[1] = {}; + color_blend_attachments[0].blendEnable = is_blend; + color_blend_attachments[0].colorWriteMask = VK_COLOR_COMPONENT_R_BIT + | VK_COLOR_COMPONENT_G_BIT + | VK_COLOR_COMPONENT_B_BIT + | VK_COLOR_COMPONENT_A_BIT; + if (is_blend) { + color_blend_attachments[0].srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA; + color_blend_attachments[0].dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA; + color_blend_attachments[0].colorBlendOp = VK_BLEND_OP_ADD; + color_blend_attachments[0].srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE; + color_blend_attachments[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO; + color_blend_attachments[0].alphaBlendOp = VK_BLEND_OP_ADD; + } + + VkPipelineColorBlendStateCreateInfo color_blend_state{}; + color_blend_state.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO; + color_blend_state.attachmentCount = 1; + color_blend_state.pAttachments = color_blend_attachments; + + VkDynamicState dynamic_states[2] = {VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR}; + + VkPipelineDynamicStateCreateInfo dynamic_state{}; + dynamic_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO; + dynamic_state.dynamicStateCount = 2; + dynamic_state.pDynamicStates = dynamic_states; + + pipeline_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO; + pipeline_info.flags = VK_PIPELINE_CREATE_ALLOW_DERIVATIVES_BIT; + pipeline_info.stageCount = resources->shader_count; + pipeline_info.pStages = stage_info; + pipeline_info.pVertexInputState = &pipeline->vertex_input_state; + pipeline_info.pInputAssemblyState = &pipeline->input_assembly_state; + pipeline_info.pTessellationState = has_tessellation_shader ? &pipeline->tessellation_state : nullptr; + pipeline_info.pViewportState = &viewport_state; + pipeline_info.pRasterizationState = &rasterization_state; + pipeline_info.pMultisampleState = &multisample_state; + pipeline_info.pDepthStencilState = &depth_stencil_state; + pipeline_info.pColorBlendState = &color_blend_state; + pipeline_info.pDynamicState = &dynamic_state; + pipeline_info.layout = layout->pipeline_layout; + pipeline_info.renderPass = resources->render_pass; + pipeline_info.subpass = 0; + pipeline_info.basePipelineIndex = 0; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateGraphicsPipelines(dev->device, nullptr, 1, &pipeline_info, nullptr, + &pipeline->pipeline); + vk_error_sub_set_vkresult(&retval, res); + if (res) { + free(stage_info); + stage_info = nullptr; + continue; + } + + uint32_t image_sampler_count = 0; + uint32_t storage_image_count = 0; + uint32_t uniform_buffer_count = 0; + uint32_t storage_buffer_count = 0; + + for (uint32_t j = 0; j < resources->image_count; ++j) { + if ((resources->images[j].usage & VK_IMAGE_USAGE_SAMPLED_BIT)) + ++image_sampler_count; + else if ((resources->images[j].usage & VK_IMAGE_USAGE_SAMPLED_BIT)) + ++storage_image_count; + } + + for (uint32_t j = 0; j < resources->buffer_count; ++j) { + if ((resources->buffers[j].usage & VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT)) + ++uniform_buffer_count; + else if ((resources->buffers[j].usage & VK_BUFFER_USAGE_STORAGE_BUFFER_BIT)) + ++storage_buffer_count; + } + + uint32_t pool_size_count = 0; + VkDescriptorPoolSize pool_sizes[4]{}; + if (image_sampler_count > 0) + pool_sizes[pool_size_count++] = (VkDescriptorPoolSize) { + .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .descriptorCount = pipeline->thread_count * image_sampler_count, + }; + + if (storage_image_count > 0) + pool_sizes[pool_size_count++] = (VkDescriptorPoolSize) { + .type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, + .descriptorCount = pipeline->thread_count * storage_image_count, + }; + + if (uniform_buffer_count > 0) + pool_sizes[pool_size_count++] = (VkDescriptorPoolSize) { + .type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, + .descriptorCount = pipeline->thread_count * uniform_buffer_count, + }; + + if (storage_buffer_count > 0) + pool_sizes[pool_size_count++] = (VkDescriptorPoolSize) { + .type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, + .descriptorCount = pipeline->thread_count * storage_image_count, + }; + + VkDescriptorPoolCreateInfo set_info{}; + set_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO; + set_info.maxSets = pipeline->thread_count; + set_info.poolSizeCount = pool_size_count; + set_info.pPoolSizes = pool_sizes; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateDescriptorPool(dev->device, &set_info, nullptr, + &pipeline->set_pool); + vk_error_sub_set_vkresult(&retval, res); + if (res) { + free(stage_info); + stage_info = nullptr; + continue; + } + + free(stage_info); + stage_info = nullptr; + ++successful; + } + + vk_error_set_vkresult(&retval, successful == pipeline_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + +void VulkanUtils::free_layouts(struct vk_device *dev, struct vk_layout *layouts, uint32_t layout_count) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < layout_count; ++i) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyPipelineLayout(dev->device, layouts[i].pipeline_layout, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyDescriptorSetLayout(dev->device, layouts[i].set_layout, nullptr); + } +} + +void VulkanUtils::free_pipelines(struct vk_device *dev, struct vk_pipeline *pipelines, uint32_t pipeline_count) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < pipeline_count; ++i) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyPipeline(dev->device, pipelines[i].pipeline, nullptr); + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyDescriptorPool(dev->device, pipelines[i].set_pool, nullptr); + } +} + + +static vk_error +create_render_pass(struct vk_device *dev, VkFormat color_format, VkFormat depth_format, VkRenderPass *render_pass, + enum vk_render_pass_load_op keeps_contents, enum vk_make_depth_buffer has_depth) { + vk_error retval = VK_ERROR_NONE; + VkResult res; + + VkAttachmentDescription render_pass_attachments[2]{}; + render_pass_attachments[0].format = color_format; + render_pass_attachments[0].samples = VK_SAMPLE_COUNT_1_BIT; + render_pass_attachments[0].loadOp = keeps_contents ? VK_ATTACHMENT_LOAD_OP_LOAD : VK_ATTACHMENT_LOAD_OP_CLEAR; + render_pass_attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE; + render_pass_attachments[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + render_pass_attachments[0].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + + render_pass_attachments[1].format = depth_format; + render_pass_attachments[1].samples = VK_SAMPLE_COUNT_1_BIT; + //render_pass_attachments[1].loadOp = keeps_contents?VK_ATTACHMENT_LOAD_OP_LOAD:VK_ATTACHMENT_LOAD_OP_CLEAR; + render_pass_attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; + render_pass_attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; + render_pass_attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; + render_pass_attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; + render_pass_attachments[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; + render_pass_attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL; + + VkAttachmentReference render_pass_attachment_references[2]{}; + render_pass_attachment_references[0].attachment = 0; + render_pass_attachment_references[0].layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; + render_pass_attachment_references[1].attachment = 1; + render_pass_attachment_references[1].layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL; + + VkSubpassDescription render_pass_subpasses[1]{}; + render_pass_subpasses[0].pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; + render_pass_subpasses[0].colorAttachmentCount = 1; + render_pass_subpasses[0].pColorAttachments = &render_pass_attachment_references[0]; + render_pass_subpasses[0].pDepthStencilAttachment = has_depth ? &render_pass_attachment_references[1] : nullptr; + + VkRenderPassCreateInfo render_pass_info{}; + render_pass_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO; + render_pass_info.attachmentCount = has_depth ? UINT32_C(2) : UINT32_C(1); + render_pass_info.pAttachments = render_pass_attachments; + render_pass_info.subpassCount = UINT32_C(1); + render_pass_info.pSubpasses = render_pass_subpasses; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateRenderPass(dev->device, &render_pass_info, nullptr, render_pass); + vk_error_set_vkresult(&retval, res); + + return retval; +} + +vk_error +VulkanUtils::create_offscreen_buffers(struct vk_physical_device *phy_dev, struct vk_device *dev, VkFormat format, + struct vk_offscreen_buffers *offscreen_buffers, uint32_t offscreen_buffer_count, + VkRenderPass *render_pass, + enum vk_render_pass_load_op keeps_contents, enum vk_make_depth_buffer has_depth, + bool linear) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + VkResult res; + vk_error err; + + VkImageFormatProperties format_properties; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceImageFormatProperties(phy_dev->physical_device, format, + VK_IMAGE_TYPE_2D, + VK_IMAGE_TILING_OPTIMAL, + VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | + VK_IMAGE_USAGE_SAMPLED_BIT, + 0, + &format_properties); + vk_error_sub_set_vkresult(&retval, res); + if (res != VK_SUCCESS)return retval; + + for (uint32_t i = 0; i < offscreen_buffer_count; ++i) { + offscreen_buffers[i].color = {}; + offscreen_buffers[i].depth = {}; + offscreen_buffers[i].framebuffer = nullptr; + if (format_properties.maxExtent.width < offscreen_buffers[i].surface_size.width) { + offscreen_buffers[i].surface_size.width = format_properties.maxExtent.width; + } + if (format_properties.maxExtent.height < offscreen_buffers[i].surface_size.height) { + offscreen_buffers[i].surface_size.height = format_properties.maxExtent.height; + } + } + + VkFormat depth_format = get_supported_depth_stencil_format(phy_dev); + + retval = create_render_pass(dev, format, depth_format, render_pass, keeps_contents, has_depth); + if (!vk_error_is_success(&retval)) + return retval; + + for (uint32_t i = 0; i < offscreen_buffer_count; ++i) { + offscreen_buffers[i].color = {}; + offscreen_buffers[i].color.format = format; + offscreen_buffers[i].color.extent = offscreen_buffers[i].surface_size; + offscreen_buffers[i].color.usage = (VkImageUsageFlagBits) (VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | + VK_IMAGE_USAGE_SAMPLED_BIT); + offscreen_buffers[i].color.stage = VK_SHADER_STAGE_FRAGMENT_BIT; + offscreen_buffers[i].color.make_view = true; + offscreen_buffers[i].color.anisotropyEnable = true; + offscreen_buffers[i].color.repeat_mode = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + offscreen_buffers[i].color.mipmaps = false; + offscreen_buffers[i].color.linear = linear; + + err = create_images(phy_dev, dev, &offscreen_buffers[i].color, 1); + vk_error_sub_merge(&retval, &err); + if (!vk_error_is_success(&err)) + continue; + + if (has_depth) { + offscreen_buffers[i].depth = {}; + offscreen_buffers[i].depth.format = depth_format; + offscreen_buffers[i].depth.extent = offscreen_buffers[i].surface_size; + offscreen_buffers[i].depth.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT; + offscreen_buffers[i].depth.make_view = true; + offscreen_buffers[i].depth.anisotropyEnable = true; + offscreen_buffers[i].depth.repeat_mode = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + offscreen_buffers[i].depth.mipmaps = false; + offscreen_buffers[i].depth.linear = false; + + err = create_images(phy_dev, dev, &offscreen_buffers[i].depth, 1); + vk_error_sub_merge(&retval, &err); + if (!vk_error_is_success(&err)) + continue; + } + + VkImageView framebuffer_attachments[2] = { + offscreen_buffers[i].color.view, + offscreen_buffers[i].depth.view, + }; + + VkFramebufferCreateInfo framebuffer_info{}; + framebuffer_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO; + framebuffer_info.renderPass = *render_pass; + framebuffer_info.attachmentCount = has_depth ? UINT32_C(2) : UINT32_C(1); + framebuffer_info.pAttachments = framebuffer_attachments; + framebuffer_info.width = offscreen_buffers[i].surface_size.width; + framebuffer_info.height = offscreen_buffers[i].surface_size.height; + framebuffer_info.layers = 1; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateFramebuffer(dev->device, &framebuffer_info, nullptr, + &offscreen_buffers[i].framebuffer); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + ++successful; + } + + vk_error_set_vkresult(&retval, successful == offscreen_buffer_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + +vk_error +VulkanUtils::create_graphics_buffers(struct vk_physical_device *phy_dev, struct vk_device *dev, VkFormat format, + struct vk_graphics_buffers *graphics_buffers, uint32_t graphics_buffer_count, + VkRenderPass *render_pass, + enum vk_render_pass_load_op keeps_contents, enum vk_make_depth_buffer has_depth) { + uint32_t successful = 0; + vk_error retval = VK_ERROR_NONE; + VkResult res; + vk_error err; + + VkImageFormatProperties format_properties; + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetPhysicalDeviceImageFormatProperties(phy_dev->physical_device, format, + VK_IMAGE_TYPE_2D, + VK_IMAGE_TILING_OPTIMAL, + VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | + VK_IMAGE_USAGE_SAMPLED_BIT, + 0, + &format_properties); + vk_error_sub_set_vkresult(&retval, res); + if (res != VK_SUCCESS)return retval; + + for (uint32_t i = 0; i < graphics_buffer_count; ++i) { + graphics_buffers[i].color_view = nullptr; + graphics_buffers[i].depth = (struct vk_image) {}; + graphics_buffers[i].framebuffer = nullptr; + if (format_properties.maxExtent.width < graphics_buffers[i].surface_size.width) { + graphics_buffers[i].surface_size.width = format_properties.maxExtent.width; + } + if (format_properties.maxExtent.height < graphics_buffers[i].surface_size.height) { + graphics_buffers[i].surface_size.height = format_properties.maxExtent.height; + } + } + + VkFormat depth_format = get_supported_depth_stencil_format(phy_dev);; + + retval = create_render_pass(dev, format, depth_format, render_pass, keeps_contents, has_depth); + if (!vk_error_is_success(&retval)) + return retval; + + for (uint32_t i = 0; i < graphics_buffer_count; ++i) { + VkImageViewCreateInfo view_info{}; + view_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; + view_info.image = graphics_buffers[i].swapchain_image; + view_info.viewType = VK_IMAGE_VIEW_TYPE_2D; + view_info.format = format; + view_info.components = {VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, + VK_COMPONENT_SWIZZLE_A,}; + view_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; + view_info.subresourceRange.baseMipLevel = 0; + view_info.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS; + view_info.subresourceRange.baseArrayLayer = 0; + view_info.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateImageView(dev->device, &view_info, nullptr, + &graphics_buffers[i].color_view); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + if (has_depth) { + graphics_buffers[i].depth = {}; + graphics_buffers[i].depth.format = depth_format; + graphics_buffers[i].depth.extent = graphics_buffers[i].surface_size; + graphics_buffers[i].depth.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT; + graphics_buffers[i].depth.make_view = true; + graphics_buffers[i].depth.will_be_initialized = false; + graphics_buffers[i].depth.multisample = false; + graphics_buffers[i].depth.anisotropyEnable = true; + graphics_buffers[i].depth.repeat_mode = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE; + graphics_buffers[i].depth.mipmaps = false; + graphics_buffers[i].depth.linear = false; + + err = create_images(phy_dev, dev, &graphics_buffers[i].depth, 1); + vk_error_sub_merge(&retval, &err); + if (!vk_error_is_success(&err)) + continue; + } + + //TODO suspicious + VkImageView framebuffer_attachments[2] = { + graphics_buffers[i].color_view, + graphics_buffers[i].depth.view, + }; + + VkFramebufferCreateInfo framebuffer_info{}; + framebuffer_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO; + framebuffer_info.renderPass = *render_pass; + framebuffer_info.attachmentCount = has_depth ? UINT32_C(2) : UINT32_C(1); + framebuffer_info.pAttachments = framebuffer_attachments; + framebuffer_info.width = graphics_buffers[i].surface_size.width; + framebuffer_info.height = graphics_buffers[i].surface_size.height; + framebuffer_info.layers = 1; + + res = VULKAN_HPP_DEFAULT_DISPATCHER.vkCreateFramebuffer(dev->device, &framebuffer_info, nullptr, + &graphics_buffers[i].framebuffer); + vk_error_sub_set_vkresult(&retval, res); + if (res) + continue; + + ++successful; + } + + vk_error_set_vkresult(&retval, successful == graphics_buffer_count ? VK_SUCCESS : VK_INCOMPLETE); + return retval; +} + +void VulkanUtils::free_offscreen_buffers(struct vk_device *dev, struct vk_offscreen_buffers *offscreen_buffers, + uint32_t graphics_buffer_count, + VkRenderPass render_pass) { + VULKAN_HPP_DEFAULT_DISPATCHER.vkDeviceWaitIdle(dev->device); + + for (uint32_t i = 0; i < graphics_buffer_count; ++i) { + free_images(dev, &offscreen_buffers[i].color, 1); + free_images(dev, &offscreen_buffers[i].depth, 1); + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyFramebuffer(dev->device, offscreen_buffers[i].framebuffer, nullptr); + } + + VULKAN_HPP_DEFAULT_DISPATCHER.vkDestroyRenderPass(dev->device, render_pass, nullptr); +} diff --git a/examples/vk-shadertoy/vulkan/utils.h b/examples/vk-shadertoy/vulkan/utils.h new file mode 100644 index 0000000..2925b46 --- /dev/null +++ b/examples/vk-shadertoy/vulkan/utils.h @@ -0,0 +1,152 @@ + +#ifndef _LAUNCHER_VULKAN_UTILS_H_ +#define _LAUNCHER_VULKAN_UTILS_H_ + +#include "common.h" + + +class VulkanUtils { +public: + VulkanUtils(); + + ~VulkanUtils(); + + static void exit(VkInstance vk); + + static vk_error + enumerate_devices(VkInstance vk, VkSurfaceKHR *surface, struct vk_physical_device *devs, uint32_t *idx, + bool use_idx); + + static vk_error + get_commands(struct vk_physical_device *phy_dev, struct vk_device *dev, VkDeviceQueueCreateInfo queue_info[], + uint32_t queue_info_count, uint32_t create_count); + + static void cleanup(struct vk_device *dev); + + static vk_error load_shader(struct vk_device *dev, const uint32_t *code, VkShaderModule *shader, size_t size); + + static vk_error load_shader_spirv_file(struct vk_device *dev, const char *spirv_file, VkShaderModule *shader); + + static void free_shader(struct vk_device *dev, VkShaderModule shader); + + static uint32_t find_suitable_memory(struct vk_physical_device *phy_dev, struct vk_device *dev, + VkMemoryRequirements *mem_req, VkMemoryPropertyFlags properties); + + static vk_error init_ext(VkInstance *vk, const char *ext_names[], uint32_t ext_count); + + static vk_error get_dev_ext(struct vk_physical_device *phy_dev, struct vk_device *dev, VkQueueFlags qflags, + VkDeviceQueueCreateInfo queue_info[], uint32_t *queue_info_count, + const char *ext_names[], uint32_t ext_count); + + static inline vk_error init(VkInstance *vk) { + const char *extension_names[] = { + VK_KHR_SURFACE_EXTENSION_NAME, +#if defined(VK_USE_PLATFORM_WIN32_KHR) + VK_KHR_WIN32_SURFACE_EXTENSION_NAME, +#elif defined(VK_USE_PLATFORM_XCB_KHR) + VK_KHR_XCB_SURFACE_EXTENSION_NAME, +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME, +#endif + }; + VULKAN_HPP_DEFAULT_DISPATCHER.init(); + return init_ext(vk, extension_names, sizeof extension_names / sizeof *extension_names); + } + + static inline vk_error get_dev(struct vk_physical_device *phy_dev, struct vk_device *dev, VkQueueFlags qflags, + VkDeviceQueueCreateInfo queue_info[], uint32_t *queue_info_count) { + const char *extension_names[] = { + VK_KHR_SWAPCHAIN_EXTENSION_NAME, + }; + return get_dev_ext(phy_dev, dev, qflags, queue_info, queue_info_count, extension_names, + sizeof extension_names / sizeof *extension_names); + } + +// gcc 11 has Wstringop-overflow warning here, but this is GCC bug look like +// look https://stackoverflow.com/questions/69426070/gcc-11-order-of-arguments-triggers-false-positive-wstringop-overflow-is-this-bu + static vk_error + setup(struct vk_physical_device *phy_dev, struct vk_device *dev, VkQueueFlags qflags, uint32_t create_count) { + VkDeviceQueueCreateInfo queue_info[kMaxQueueFamily]; + uint32_t queue_info_count = 0; + + queue_info_count = phy_dev->queue_family_count; + vk_error res = get_dev(phy_dev, dev, qflags, queue_info, &queue_info_count); + if (vk_error_is_success(&res)) { + if (create_count <= queue_info[0].queueCount)create_count = 0; //0=create one cmd_buffer per Queue + res = get_commands(phy_dev, dev, queue_info, queue_info_count, create_count); + } + return res; + + } + + static vk_error create_surface(VkInstance vk, VkSurfaceKHR *surface, struct app_os_window *os_window); + + static vk_error get_swapchain(VkInstance vk, struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_swapchain *swapchain, struct app_os_window *os_window, + uint32_t thread_count, + VkPresentModeKHR *present_mode); + + static void free_swapchain(VkInstance vk, struct vk_device *dev, struct vk_swapchain *swapchain); + + static VkImage *get_swapchain_images(struct vk_device *dev, struct vk_swapchain *swapchain, uint32_t *count); + + static vk_error create_images(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_image *images, uint32_t image_count); + + static vk_error create_buffers(struct vk_physical_device *phy_dev, struct vk_device *dev, + struct vk_buffer *buffers, uint32_t buffer_count); + + static vk_error load_shaders(struct vk_device *dev, + struct vk_shader *shaders, uint32_t shader_count); + + static vk_error get_presentable_queues(struct vk_physical_device *phy_dev, struct vk_device *dev, + VkSurfaceKHR surface, uint32_t **presentable_queues, + uint32_t *presentable_queue_count); + + static VkFormat get_supported_depth_stencil_format(struct vk_physical_device *phy_dev); + + static void free_images(struct vk_device *dev, struct vk_image *images, uint32_t image_count); + + static void free_buffers(struct vk_device *dev, struct vk_buffer *buffers, uint32_t buffer_count); + + static void free_shaders(struct vk_device *dev, struct vk_shader *shaders, uint32_t shader_count); + + static void free_graphics_buffers(struct vk_device *dev, struct vk_graphics_buffers *graphics_buffers, + uint32_t graphics_buffer_count, + VkRenderPass render_pass); + + static vk_error + make_graphics_layouts(struct vk_device *dev, struct vk_layout *layouts, uint32_t layout_count, bool w_img_pattern, + uint32_t *img_pattern, uint32_t img_pattern_size); + + static vk_error + make_graphics_pipelines(struct vk_device *dev, struct vk_pipeline *pipelines, uint32_t pipeline_count, + bool is_blend); + + static void free_layouts(struct vk_device *dev, struct vk_layout *layouts, uint32_t layout_count); + + static void free_pipelines(struct vk_device *dev, struct vk_pipeline *pipelines, uint32_t pipeline_count); + + static vk_error create_offscreen_buffers(struct vk_physical_device *phy_dev, struct vk_device *dev, VkFormat format, + struct vk_offscreen_buffers *offscreen_buffers, + uint32_t offscreen_buffer_count, + VkRenderPass *render_pass, + enum vk_render_pass_load_op keeps_contents, + enum vk_make_depth_buffer has_depth, + bool linear); + + static vk_error create_graphics_buffers(struct vk_physical_device *phy_dev, struct vk_device *dev, VkFormat format, + struct vk_graphics_buffers *graphics_buffers, + uint32_t graphics_buffer_count, + VkRenderPass *render_pass, + enum vk_render_pass_load_op keeps_contents, + enum vk_make_depth_buffer has_depth); + + static void free_offscreen_buffers(struct vk_device *dev, struct vk_offscreen_buffers *offscreen_buffers, + uint32_t offscreen_buffer_count, + VkRenderPass render_pass); + +private: +}; + +#endif //_LAUNCHER_VULKAN_UTILS_H_ \ No newline at end of file diff --git a/examples/vk-shadertoy/vulkan/vk_error_print.cc b/examples/vk-shadertoy/vulkan/vk_error_print.cc new file mode 100644 index 0000000..b61e918 --- /dev/null +++ b/examples/vk-shadertoy/vulkan/vk_error_print.cc @@ -0,0 +1,199 @@ + +// Danil, 2021+ Vulkan shader launcher, self https://github.com/danilw/vulkan-shadertoy-launcher +// The MIT License + +#include "vk_error_print.h" + +void vk_error_data_set_vkresult(struct vk_error_data *error, VkResult vkresult, const char *file, unsigned int line) { + if (vkresult == 0) + return; + + if (error->type != VK_ERROR_SUCCESS && !(error->type == VK_ERROR_VKRESULT_WARNING && vkresult < 0)) + return; + + *error = (struct vk_error_data) { + .type = vkresult < 0 ? VK_ERROR_VKRESULT : VK_ERROR_VKRESULT_WARNING, + .vkresult = vkresult, + .file = file, + .line = line, + }; +} + +void vk_error_data_set_errno(struct vk_error_data *error, int err_no, const char *file, unsigned int line) { + if (err_no == 0) + return; + + if (error->type != VK_ERROR_SUCCESS && error->type != VK_ERROR_VKRESULT_WARNING) + return; + + *error = (struct vk_error_data) { + .type = VK_ERROR_ERRNO, + .err_no = err_no, + .file = file, + .line = line, + }; +} + +bool vk_error_data_merge(struct vk_error_data *error, struct vk_error_data *other) { + if (other->type == VK_ERROR_SUCCESS) + return false; + + if (error->type != VK_ERROR_SUCCESS && !(error->type == VK_ERROR_VKRESULT_WARNING && + (other->type == VK_ERROR_VKRESULT || other->type == VK_ERROR_ERRNO))) + return false; + + *error = *other; + return true; +} + +bool vk_error_is_success(struct vk_error *error) { + return error->error.type == VK_ERROR_SUCCESS; +} + +bool vk_error_is_warning(struct vk_error *error) { + return error->error.type == VK_ERROR_VKRESULT_WARNING; +} + +bool vk_error_is_error(struct vk_error *error) { + return !vk_error_is_success(error) && !vk_error_is_warning(error); +} + +static const char *VkResult_string(VkResult res) { + switch (res) { + case VK_SUCCESS: + return "Success"; + case VK_NOT_READY: + return "Not ready"; + case VK_TIMEOUT: + return "Timeout"; + case VK_EVENT_SET: + return "Event set"; + case VK_EVENT_RESET: + return "Event reset"; + case VK_INCOMPLETE: + return "Incomplete"; + case VK_ERROR_OUT_OF_HOST_MEMORY: + return "Out of host memory"; + case VK_ERROR_OUT_OF_DEVICE_MEMORY: + return "Out of device memory"; + case VK_ERROR_INITIALIZATION_FAILED: + return "Initialization failed"; + case VK_ERROR_DEVICE_LOST: + return "Device lost"; + case VK_ERROR_MEMORY_MAP_FAILED: + return "Memory map failed"; + case VK_ERROR_LAYER_NOT_PRESENT: + return "Layer not present"; + case VK_ERROR_EXTENSION_NOT_PRESENT: + return "Extension not present"; + case VK_ERROR_FEATURE_NOT_PRESENT: + return "Feature not present"; + case VK_ERROR_INCOMPATIBLE_DRIVER: + return "Incompatible driver"; + case VK_ERROR_TOO_MANY_OBJECTS: + return "Too many objects"; + case VK_ERROR_FORMAT_NOT_SUPPORTED: + return "Format not supported"; + case VK_ERROR_SURFACE_LOST_KHR: + return "Surface lost"; + case VK_ERROR_NATIVE_WINDOW_IN_USE_KHR: + return "Native window is in use"; + case VK_SUBOPTIMAL_KHR: + return "Suboptimal"; + case VK_ERROR_OUT_OF_DATE_KHR: + return "Surface is out of date"; + case VK_ERROR_INCOMPATIBLE_DISPLAY_KHR: + return "Incompatible display"; + case VK_ERROR_VALIDATION_FAILED_EXT: + return "Validation failed"; + default: + return "Unrecognized error"; + } +} + +#if defined(VK_USE_PLATFORM_WIN32_KHR) +void win_error(char *iout, char *iout2){ + int msgboxID = MessageBox( + NULL, + (LPCSTR)iout, + (LPCSTR)iout2, + MB_ICONHAND | MB_DEFBUTTON1 + ); +} + +#endif + +void print_error(FILE *fout, struct vk_error_data *error_data, const char *prefix) { +#if defined(VK_USE_PLATFORM_WIN32_KHR) + char iout[512]={0}; + char iout2[512]={0}; + + fprintf(fout, "%s:%u: %s", error_data->file, error_data->line, prefix); + sprintf(iout, "%s:%u: %s", error_data->file, error_data->line, prefix); + switch (error_data->type) + { + case VK_ERROR_VKRESULT_WARNING: + case VK_ERROR_VKRESULT: + fprintf(fout, "%s (VkResult %d)\n", VkResult_string(error_data->vkresult), error_data->vkresult); + sprintf(iout2, "%s (VkResult %d)\n", VkResult_string(error_data->vkresult), error_data->vkresult); + break; + case VK_ERROR_ERRNO: + fprintf(fout, "%s (errno %d)\n", strerror(error_data->err_no), error_data->err_no); + sprintf(iout2, "%s (errno %d)\n", strerror(error_data->err_no), error_data->err_no); + break; + default: + fprintf(fout, "\n"); + sprintf(iout2, "\n"); + break; + } + win_error((char*)&iout2,(char*)&iout); + +#elif defined(VK_USE_PLATFORM_XCB_KHR) || defined(VK_USE_PLATFORM_WAYLAND_KHR) + fprintf(fout, "%s:%u: %s", error_data->file, error_data->line, prefix); + switch (error_data->type) { + case VK_ERROR_VKRESULT_WARNING: + case VK_ERROR_VKRESULT: + fprintf(fout, "%s (VkResult %d)\n", VkResult_string(error_data->vkresult), error_data->vkresult); + break; + case VK_ERROR_ERRNO: + fprintf(fout, "%s (errno %d)\n", strerror(error_data->err_no), error_data->err_no); + break; + default: + fprintf(fout, "\n"); + break; + } +#endif +} + +void vk_error_fprintf(FILE *fout, struct vk_error *error, const char *fmt, ...) { + if (error->error.type == VK_ERROR_SUCCESS) + return; + + va_list args; + va_start(args, fmt); + vfprintf(fout, fmt, args); + va_end(args); + + print_error(fout, &error->error, ""); + if (error->sub_error.type != VK_ERROR_SUCCESS) + print_error(fout, &error->sub_error, " Resulting from this error: "); +} + + +/* The following functions get a readable string out of the Vulkan standard enums */ +const char *vk_VkPhysicalDeviceType_string(VkPhysicalDeviceType type) { + switch (type) { + case VK_PHYSICAL_DEVICE_TYPE_OTHER: + return "Neither GPU nor CPU"; + case VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU: + return "Integrated GPU"; + case VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU: + return "Discrete GPU"; + case VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU: + return "Virtual GPU"; + case VK_PHYSICAL_DEVICE_TYPE_CPU: + return "CPU"; + default: + return "Unrecognized device type"; + } +} diff --git a/examples/vk-shadertoy/vulkan/vk_error_print.h b/examples/vk-shadertoy/vulkan/vk_error_print.h new file mode 100644 index 0000000..2c429bf --- /dev/null +++ b/examples/vk-shadertoy/vulkan/vk_error_print.h @@ -0,0 +1,84 @@ + +// Danil, 2021+ Vulkan shader launcher, self https://github.com/danilw/vulkan-shadertoy-launcher +// The MIT License + +#ifndef vk_utils_printf_H +#define vk_utils_printf_H + +#include +#include +#include +#include + +#define VULKAN_HPP_NO_EXCEPTIONS 1 +#define VULKAN_HPP_DISPATCH_LOADER_DYNAMIC 1 +#include + +#ifdef _GNUC +#define ATTR_UNUSED __attribute__((format(printf, 3, 4))) +#else +#define ATTR_UNUSED +#endif + +enum vk_error_type { + VK_ERROR_SUCCESS = 0, + VK_ERROR_VKRESULT, + VK_ERROR_VKRESULT_WARNING, + VK_ERROR_ERRNO, +}; + +typedef struct vk_error_data { + enum vk_error_type type; + union { + VkResult vkresult; + int err_no; + }; + const char *file; + unsigned int line; +} vk_error_data; + +typedef struct vk_error { + struct vk_error_data error; + struct vk_error_data sub_error; /* + * Used in cases where error is e.g. "VK_INCOMPLETE", and it is due to + * another error. + */ +} vk_error; + +#define VK_ERROR_NONE (struct vk_error){ .error = { .type = VK_ERROR_SUCCESS,}, .sub_error = { .type = VK_ERROR_SUCCESS,}, } + +#define vk_error_set_vkresult(es, e) vk_error_data_set_vkresult(&(es)->error, (e), __FILE__, __LINE__) +#define vk_error_set_errno(es, e) vk_error_data_set_errno (&(es)->error, (e), __FILE__, __LINE__) +#define vk_error_sub_set_vkresult(es, e) vk_error_data_set_vkresult(&(es)->sub_error, (e), __FILE__, __LINE__) +#define vk_error_sub_set_errno(es, e) vk_error_data_set_errno (&(es)->sub_error, (e), __FILE__, __LINE__) +#define vk_error_merge(es, os) \ +do { \ + if (vk_error_data_merge(&(es)->error, &(os)->error)) \ + (es)->sub_error = (os)->sub_error; \ +} while (0) +#define vk_error_sub_merge(es, os) vk_error_data_merge(&(es)->sub_error, &(os)->error) + +void vk_error_data_set_vkresult(struct vk_error_data *error, VkResult vkresult, const char *file, unsigned int line); + +void vk_error_data_set_errno(struct vk_error_data *error, int err_no, const char *file, unsigned int line); + +bool vk_error_data_merge(struct vk_error_data *error, struct vk_error_data *other); + +bool vk_error_is_success(struct vk_error *error); + +bool vk_error_is_warning(struct vk_error *error); + +bool vk_error_is_error(struct vk_error *error); + +#if defined(VK_USE_PLATFORM_WIN32_KHR) +void win_error(char *iout, char *iout2); +#endif +#define vk_error_printf(es, ...) vk_error_fprintf(stdout, (es), __VA_ARGS__) + +void vk_error_fprintf(FILE *fout, struct vk_error *error, const char *fmt, ...) ATTR_UNUSED; + + +const char *vk_VkPhysicalDeviceType_string(VkPhysicalDeviceType type); + + +#endif diff --git a/examples/vk-shadertoy/vulkan/vk_struct.h b/examples/vk-shadertoy/vulkan/vk_struct.h new file mode 100644 index 0000000..c7e97cb --- /dev/null +++ b/examples/vk-shadertoy/vulkan/vk_struct.h @@ -0,0 +1,283 @@ + +// Danil, 2021+ Vulkan shader launcher, self https://github.com/danilw/vulkan-shadertoy-launcher +// The MIT License + +#ifndef vk_struct_H +#define vk_struct_H + +static constexpr uint32_t kMaxQueueFamily = UINT32_C(10); +//#define VK_MAX_QUEUE_FAMILY 10 + +struct vk_physical_device { + VkPhysicalDevice physical_device; + VkPhysicalDeviceProperties properties; + VkPhysicalDeviceFeatures features; + VkPhysicalDeviceMemoryProperties memories; + + VkQueueFamilyProperties queue_families[kMaxQueueFamily]; + uint32_t queue_family_count; + bool queue_families_incomplete; +}; + +struct vk_commands { + VkQueueFlags qflags; + + VkCommandPool pool; + VkQueue *queues; + uint32_t queue_count; + VkCommandBuffer *buffers; + uint32_t buffer_count; +}; + +struct vk_device { + VkDevice device; + struct vk_commands *command_pools; + uint32_t command_pool_count; +}; + +static constexpr uint32_t kMaxPresentModes = UINT32_C(4); +//#define VK_MAX_PRESENT_MODES 4 + +struct vk_swapchain { + VkSurfaceKHR surface; + VkSwapchainKHR swapchain; + VkSurfaceFormatKHR surface_format; + VkSurfaceCapabilitiesKHR surface_caps; + VkPresentModeKHR present_modes[kMaxPresentModes]; + uint32_t present_modes_count; +}; + +struct vk_image { + VkFormat format; + VkExtent2D extent; + VkImageUsageFlagBits usage; + VkShaderStageFlagBits stage; + bool make_view; + bool will_be_initialized; + bool host_visible; + bool multisample; + uint32_t *sharing_queues; + uint32_t sharing_queue_count; + VkImage image; + VkDeviceMemory image_mem; + VkImageView view; + VkSampler sampler; + bool anisotropyEnable; + VkSamplerAddressMode repeat_mode; + bool mipmaps; + bool linear; +}; + +struct vk_buffer { + VkFormat format; + uint32_t size; + VkBufferUsageFlagBits usage; + VkShaderStageFlagBits stage; + bool make_view; + bool host_visible; + uint32_t *sharing_queues; + uint32_t sharing_queue_count; + VkBuffer buffer; + VkDeviceMemory buffer_mem; + VkBufferView view; +}; + +struct vk_shader { + const char *spirv_file; + VkShaderStageFlagBits stage; + VkShaderModule shader; +}; + +struct vk_graphics_buffers { + VkExtent2D surface_size; + VkImage swapchain_image; + VkImageView color_view; + struct vk_image depth; + VkFramebuffer framebuffer; +}; + +struct vk_render_essentials { + VkImage *images; + uint32_t image_count; + VkQueue present_queue; + VkCommandBuffer cmd_buffer; + + VkSemaphore sem_post_acquire; + VkSemaphore sem_pre_submit; + + VkFence exec_fence; + bool first_render; +}; + +struct vk_resources { + struct vk_image *images; + uint32_t image_count; + struct vk_buffer *buffers; + uint32_t buffer_count; + struct vk_shader *shaders; + uint32_t shader_count; + VkPushConstantRange *push_constants; + uint32_t push_constant_count; + VkRenderPass render_pass; +}; + +struct vk_layout { + struct vk_resources *resources; + VkDescriptorSetLayout set_layout; + VkPipelineLayout pipeline_layout; +}; + +struct vk_pipeline { + struct vk_layout *layout; + VkPipelineVertexInputStateCreateInfo vertex_input_state; + VkPipelineInputAssemblyStateCreateInfo input_assembly_state; + VkPipelineTessellationStateCreateInfo tessellation_state; + uint32_t thread_count; + VkPipeline pipeline; + VkDescriptorPool set_pool; +}; + +enum vk_render_pass_load_op { + VK_C_CLEAR = 0, + VK_KEEP = 1, +}; + +enum vk_make_depth_buffer { + VK_WITHOUT_DEPTH = 0, + VK_WITH_DEPTH = 1, +}; + +struct vk_offscreen_buffers { + VkExtent2D surface_size; + struct vk_image color; + struct vk_image depth; + VkFramebuffer framebuffer; +}; + + +struct app_data_struct { + int iResolution[2]; //resolution + int iMouse[2]; //mouse in window, it always updated (not like iMouse on shadertoy) + int iMouse_lclick[2]; //mouse left click pos (its -[last pos] when left mosue not clicked) + int iMouse_rclick[2]; //mouse right click pos (its -[last pos] when right mosue not clicked) + bool iMouse_click[2]; //is mouse button clicked(left/right) + float iTime; //time + float iTimeDelta; //time delta + int iFrame; //frames + + bool pause; //pause clicked + bool quit; //quit clicked/happend + bool drawdebug; //draw debug info, key press +}; + +static constexpr uint32_t kAppNameStrLen = UINT32_C(80); +//#define APP_NAME_STR_LEN 80 +struct app_os_window { +#if defined(VK_USE_PLATFORM_WIN32_KHR) + HINSTANCE connection; + HWND window; + POINT minsize; +#elif defined(VK_USE_PLATFORM_XCB_KHR) + Display *display; + xcb_connection_t *connection; + xcb_screen_t *screen; + xcb_window_t xcb_window; + xcb_intern_atom_reply_t *atom_wm_delete_window; +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + struct wl_display *wl_display; + struct wl_registry *registry; + struct wl_compositor *compositor; + struct wl_surface *wl_surface; + struct xdg_wm_base *shell; + struct wl_seat *seat; + struct wl_pointer *pointer; + struct wl_keyboard *keyboard; + struct xdg_surface *xdg_surface; + struct xdg_toplevel *xdg_toplevel; + bool configured; +#endif + char name[kAppNameStrLen]; + + bool prepared; // is vk setup prepared + bool is_minimized; //window controled events + bool resize_event; //window controled events + bool fps_lock; //key pressed event + bool reload_shaders_on_resize; //launch option + bool print_debug; //launch option + + bool pause_refresh; //used only in Windows, on pause when key pressed refresh + + VkPresentModeKHR present_mode; + struct app_data_struct app_data; +}; + + +// numbers buffers <*.frag> files +// number of buffers to create, any number(>0), if you need 0 use https://github.com/danilw/vulkan-shader-launcher +// names shaders/spv/.spv look files names in that folder +static constexpr uint32_t OFFSCREEN_BUFFERS = UINT32_C(4); + +// number of images(>0) +// names textures/.png X start from 1 +static constexpr uint32_t IMAGE_TEXTURES = UINT32_C(4); + +// linear or mipmap for textures +static constexpr bool USE_MIPMAPS = true; + +// do not edit, it just to see where keyboard texture used +static constexpr uint32_t iKeyboard = UINT32_C(1); + +// use save screenshot functions, default hotkey Z +//TODO #define USE_SCREENSHOT + +struct shaders_push_constants { + float iMouse[4]; + float iDate[4]; + int iMouse_lr[2]; + float iResolution[2]; + int debugdraw; // look function check_hotkeys + int pCustom; //custom data + float iTime; + float iTimeDelta; + int iFrame; +}; + +enum { + BUFFER_VERTICES = 0, + BUFFER_INDICES = 1, +}; +enum { + SHADER_MAIN_VERTEX = 0, + SHADER_MAIN_FRAGMENT = 1, +}; + +struct render_data { + struct objects { + struct vertex { + float pos[3]; + } vertices[3]; + + uint16_t indices[3]; + } objects; + + struct shaders_push_constants push_constants; + + struct vk_image images[IMAGE_TEXTURES + OFFSCREEN_BUFFERS + iKeyboard]; + struct vk_buffer buffers[2]; + struct vk_shader shaders[2 + OFFSCREEN_BUFFERS * 2]; + struct vk_graphics_buffers *main_gbuffers; + struct vk_offscreen_buffers *buf_obuffers; + + VkRenderPass buf_render_pass[OFFSCREEN_BUFFERS]; + struct vk_layout buf_layout[OFFSCREEN_BUFFERS]; + struct vk_pipeline buf_pipeline[OFFSCREEN_BUFFERS]; + VkDescriptorSet buf_desc_set[OFFSCREEN_BUFFERS]; + + VkRenderPass main_render_pass; + struct vk_layout main_layout; + struct vk_pipeline main_pipeline; + VkDescriptorSet main_desc_set; +}; + + +#endif