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Implemented displacement mapping demo
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,271 @@ | ||
| #include "graphicsApp.h" | ||
| #include "textureLoader.h" | ||
| #include "colorTable.h" | ||
| #include "quadric/include/torus.h" | ||
| #include "quadric/include/sphere.h" | ||
|
|
||
| class DisplacementMapping : public GraphicsApp | ||
| { | ||
| struct Constants | ||
| { | ||
| VkBool32 showNormals; | ||
| }; | ||
|
|
||
| struct alignas(16) Parameters | ||
| { | ||
| rapid::float4a screenSize; // x, y, 1/x, 1/y | ||
| float displacement; | ||
| }; | ||
|
|
||
| std::unique_ptr<quadric::Torus> torus; | ||
| std::unique_ptr<quadric::Sphere> dot; | ||
| std::shared_ptr<magma::ImageView> displacementMap; | ||
| std::shared_ptr<magma::UniformBuffer<Parameters>> parameters; | ||
| std::shared_ptr<magma::DynamicUniformBuffer<PhongMaterial>> material; | ||
| std::shared_ptr<magma::GraphicsPipeline> displacementPipeline; | ||
| std::shared_ptr<magma::GraphicsPipeline> fillPipeline; | ||
| DescriptorSet displacementDescriptor; | ||
| DescriptorSet fillDescriptor; | ||
|
|
||
| Constants constants = {false}; | ||
| float displacement = 0.35f; | ||
|
|
||
| public: | ||
| explicit DisplacementMapping(const AppEntry& entry): | ||
| GraphicsApp(entry, TEXT("Displacement mapping"), 1280, 720, true) | ||
| { | ||
| setupViewProjection(); | ||
| setupMaterials(); | ||
| updateParameters(); | ||
| createTransformBuffer(2); | ||
| createMeshObjects(); | ||
| loadDisplacementMap(); | ||
| setupDescriptorSets(); | ||
| setupGraphicsPipelines(); | ||
|
|
||
| renderScene(drawCmdBuffer); | ||
| blit(msaaFramebuffer->getColorView(), FrontBuffer); | ||
| blit(msaaFramebuffer->getColorView(), BackBuffer); | ||
| } | ||
|
|
||
| virtual void render(uint32_t bufferIndex) override | ||
| { | ||
| updateTransforms(); | ||
| submitCommandBuffers(bufferIndex); | ||
| std::this_thread::sleep_for(std::chrono::milliseconds(2)); // Cap fps | ||
| } | ||
|
|
||
| virtual void onKeyDown(char key, int repeat, uint32_t flags) override | ||
| { | ||
| constexpr float step = 0.1f; | ||
| switch (key) | ||
| { | ||
| case AppKey::Left: | ||
| lightViewProj->translate(-step, 0.f, 0.f); | ||
| break; | ||
| case AppKey::Right: | ||
| lightViewProj->translate(step, 0.f, 0.f); | ||
| break; | ||
| case AppKey::Up: | ||
| lightViewProj->translate(0.f, step, 0.f); | ||
| break; | ||
| case AppKey::Down: | ||
| lightViewProj->translate(0.f, -step, 0.f); | ||
| break; | ||
| case AppKey::PgUp: | ||
| lightViewProj->translate(0.f, 0.f, step); | ||
| break; | ||
| case AppKey::PgDn: | ||
| lightViewProj->translate(0.f, 0.f, -step); | ||
| break; | ||
| case AppKey::Home: | ||
| if (displacement < 0.5f) | ||
| { | ||
| displacement += 0.01f; | ||
| updateParameters(); | ||
| } | ||
| break; | ||
| case AppKey::End: | ||
| if (displacement >= 0.21f) | ||
| { | ||
| displacement -= 0.01f; | ||
| updateParameters(); | ||
| } | ||
| break; | ||
| case AppKey::Space: | ||
| constants.showNormals = !constants.showNormals; | ||
| setupGraphicsPipelines(); | ||
| renderScene(drawCmdBuffer); | ||
| break; | ||
| } | ||
| updateTransforms(); | ||
| updateLightSource(); | ||
| VulkanApp::onKeyDown(key, repeat, flags); | ||
| } | ||
|
|
||
| virtual void onMouseWheel(float distance) override | ||
| { | ||
| float step = distance * 0.2f; | ||
| float z = viewProj->getPosition().z; | ||
| if ((z + step < -2.5f) && (z + step > -15.f)) | ||
| viewProj->translate(0.f, 0.f, step); | ||
| updateViewProjTransforms(); | ||
| } | ||
|
|
||
| virtual void updateLightSource() | ||
| { | ||
| magma::helpers::mapScoped<LightSource>(lightSource, | ||
| [this](auto *light) | ||
| { | ||
| constexpr float ambientFactor = 0.4f; | ||
| light->viewPosition = viewProj->getView() * lightViewProj->getPosition(); | ||
| light->ambient = ghost_white * ambientFactor; | ||
| light->diffuse = ghost_white; | ||
| light->specular = ghost_white; | ||
| }); | ||
| } | ||
|
|
||
| void updateTransforms() | ||
| { | ||
| rapid::matrix lightTransform = rapid::translation(rapid::vector3(lightViewProj->getPosition())); | ||
| const std::vector<rapid::matrix, core::aligned_allocator<rapid::matrix>> transforms = { | ||
| arcball->transform(), | ||
| lightTransform | ||
| }; | ||
| updateObjectTransforms(transforms); | ||
| } | ||
|
|
||
| void updateParameters() | ||
| { | ||
| if (!parameters) | ||
| parameters = std::make_shared<magma::UniformBuffer<Parameters>>(device); | ||
| magma::helpers::mapScoped<Parameters>(parameters, | ||
| [this](auto *parameters) | ||
| { | ||
| parameters->screenSize = rapid::float4a(float(width), float(height), 1.f/width, 1.f/height); | ||
| parameters->displacement = displacement; | ||
| }); | ||
| } | ||
|
|
||
| void setupViewProjection() | ||
| { | ||
| viewProj = std::make_unique<LeftHandedViewProjection>(); | ||
| viewProj->setPosition(0.f, 0.f, -4.f); | ||
| viewProj->setFocus(0.f, 0.f, 0.f); | ||
| viewProj->setFieldOfView(60.f); | ||
| viewProj->setNearZ(1.f); | ||
| viewProj->setFarZ(100.f); | ||
| viewProj->setAspectRatio(width / (float)height); | ||
| viewProj->updateView(); | ||
| viewProj->updateProjection(); | ||
|
|
||
| lightViewProj = std::make_unique<LeftHandedViewProjection>(); | ||
| lightViewProj->setPosition(-1., 2.f, -1.f); | ||
|
|
||
| updateViewProjTransforms(); | ||
| } | ||
|
|
||
| void setupMaterials() | ||
| { | ||
| material = std::make_shared<magma::DynamicUniformBuffer<PhongMaterial>>(device, 1); | ||
| magma::helpers::mapScoped<PhongMaterial>(material, | ||
| [this](magma::helpers::AlignedUniformArray<PhongMaterial>& materials) | ||
| { | ||
| constexpr float ambientFactor = 0.4f; | ||
| materials[0].ambient = azure * ambientFactor; | ||
| materials[0].diffuse = azure; | ||
| materials[0].specular = alice_blue; | ||
| materials[0].shininess = 64.f; | ||
| }); | ||
| } | ||
|
|
||
| void createMeshObjects() | ||
| { | ||
| torus = std::make_unique<quadric::Torus>(0.2f, 1.0f, 128, 128, true, cmdCopyBuf); | ||
| dot = std::make_unique<quadric::Sphere>(0.02f, 8, 8, true, cmdCopyBuf); | ||
| } | ||
|
|
||
| void loadDisplacementMap() | ||
| { // https://freepbr.com/materials/stucco-1/ | ||
| displacementMap = loadDxtTexture(cmdCopyImg, "stucco1_normal_height.dds"); | ||
| } | ||
|
|
||
| void setupDescriptorSets() | ||
| { | ||
| displacementDescriptor.layout = std::shared_ptr<magma::DescriptorSetLayout>(new magma::DescriptorSetLayout(device, | ||
| { | ||
| magma::bindings::VertexFragmentStageBinding(0, magma::descriptors::DynamicUniformBuffer(1)), | ||
| magma::bindings::FragmentStageBinding(1, magma::descriptors::UniformBuffer(1)), | ||
| magma::bindings::FragmentStageBinding(2, magma::descriptors::UniformBuffer(1)), | ||
| magma::bindings::FragmentStageBinding(3, magma::descriptors::DynamicUniformBuffer(1)), | ||
| magma::bindings::VertexFragmentStageBinding(4, magma::descriptors::UniformBuffer(1)), | ||
| magma::bindings::VertexFragmentStageBinding(5, magma::descriptors::CombinedImageSampler(1)) | ||
| })); | ||
| displacementDescriptor.set = descriptorPool->allocateDescriptorSet(displacementDescriptor.layout); | ||
| displacementDescriptor.set->update(0, transforms); | ||
| displacementDescriptor.set->update(1, viewProjTransforms); | ||
| displacementDescriptor.set->update(2, lightSource); | ||
| displacementDescriptor.set->update(3, material); | ||
| displacementDescriptor.set->update(4, parameters); | ||
| displacementDescriptor.set->update(5, displacementMap, anisotropicClampToEdge); | ||
|
|
||
| fillDescriptor.layout = std::shared_ptr<magma::DescriptorSetLayout>(new magma::DescriptorSetLayout(device, | ||
| { | ||
| magma::bindings::VertexStageBinding(0, magma::descriptors::DynamicUniformBuffer(1)) | ||
| })); | ||
| fillDescriptor.set = descriptorPool->allocateDescriptorSet(fillDescriptor.layout); | ||
| fillDescriptor.set->update(0, transforms); | ||
| } | ||
|
|
||
| void setupGraphicsPipelines() | ||
| { | ||
| std::shared_ptr<magma::Specialization> specialization(new magma::Specialization(constants, | ||
| { | ||
| magma::SpecializationEntry(0, &Constants::showNormals) | ||
| } | ||
| )); | ||
| displacementPipeline = createCommonSpecializedPipeline( | ||
| "displace.o", "phong.o", | ||
| std::move(specialization), | ||
| torus->getVertexInput(), | ||
| displacementDescriptor.layout); | ||
| if (!fillPipeline) | ||
| { | ||
| fillPipeline = createCommonPipeline( | ||
| "transform.o", "fill.o", | ||
| dot->getVertexInput(), | ||
| fillDescriptor.layout); | ||
| } | ||
| } | ||
|
|
||
| void renderScene(std::shared_ptr<magma::CommandBuffer> cmdBuffer) | ||
| { | ||
| cmdBuffer->begin(); | ||
| { | ||
| cmdBuffer->beginRenderPass(msaaFramebuffer->getRenderPass(), msaaFramebuffer->getFramebuffer(), | ||
| { | ||
| magma::ClearColor(0.1f, 0.243f, 0.448f, 1.f), | ||
| magma::clears::depthOne | ||
| }); | ||
| { | ||
| cmdBuffer->bindPipeline(displacementPipeline); | ||
| cmdBuffer->bindDescriptorSet(displacementPipeline, displacementDescriptor.set, | ||
| { | ||
| transforms->getDynamicOffset(0), | ||
| material->getDynamicOffset(0) | ||
| }); | ||
| torus->draw(cmdBuffer); | ||
| cmdBuffer->bindPipeline(fillPipeline); | ||
| cmdBuffer->bindDescriptorSet(fillPipeline, fillDescriptor.set, transforms->getDynamicOffset(1)); | ||
| dot->draw(cmdBuffer); | ||
| } | ||
| cmdBuffer->endRenderPass(); | ||
| } | ||
| cmdBuffer->end(); | ||
| } | ||
| }; | ||
|
|
||
| std::unique_ptr<IApplication> appFactory(const AppEntry& entry) | ||
| { | ||
| return std::unique_ptr<DisplacementMapping>(new DisplacementMapping(entry)); | ||
| } |
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