diasurgical · AJenbo · Jan 12, 2025 · Jan 12, 2025 · Jan 12, 2025
diff --git a/Source/engine/demomode.cpp b/Source/engine/demomode.cpp
@@ -496,10 +496,7 @@ void OverrideOptions()
 	sgOptions.Graphics.hardwareCursor.SetValue(false);
 #endif
 	if (Timedemo) {
-#ifndef USE_SDL1
-		sgOptions.Graphics.vSync.SetValue(false);
-#endif
-		sgOptions.Graphics.limitFPS.SetValue(false);
+		sgOptions.Graphics.frameRateControl.SetValue(FrameRateControl::None);
 	}
 	forceResolution = Size(DemoGraphicsWidth, DemoGraphicsHeight);
 

diff --git a/Source/engine/dx.cpp b/Source/engine/dx.cpp
@@ -70,7 +70,7 @@ bool CanRenderDirectlyToOutputSurface()
  */
 void LimitFrameRate()
 {
-	if (!*sgOptions.Graphics.limitFPS)
+	if (*sgOptions.Graphics.frameRateControl != FrameRateControl::CPUSleep)
 		return;
 	static uint32_t frameDeadline;
 	uint32_t tc = SDL_GetTicks() * 1000;
@@ -246,7 +246,7 @@ void RenderPresent()
 		}
 		SDL_RenderPresent(renderer);
 
-		if (!*sgOptions.Graphics.vSync) {
+		if (*sgOptions.Graphics.frameRateControl != FrameRateControl::VerticalSync) {
 			LimitFrameRate();
 		}
 	} else {

diff --git a/Source/options.cpp b/Source/options.cpp
@@ -973,21 +973,28 @@ GraphicsOptions::GraphicsOptions()
               { ScalingQuality::AnisotropicFiltering, N_("Anisotropic") },
           })
     , integerScaling("Integer Scaling", OptionEntryFlags::CantChangeInGame | OptionEntryFlags::RecreateUI, N_("Integer Scaling"), N_("Scales the image using whole number pixel ratio."), false)
-    , vSync("Vertical Sync",
+#endif
+    , frameRateControl("Frame Rate Control",
           OptionEntryFlags::RecreateUI
-#ifdef NXDK
+#if defined(NXDK) || defined(__ANDROID__)
               | OptionEntryFlags::Invisible
 #endif
           ,
-          N_("Vertical Sync"),
-          N_("Forces waiting for Vertical Sync. Prevents tearing effect when drawing a frame. Disabling it can help with mouse lag on some systems."),
-#ifdef NXDK
-          false
+          N_("Frame Rate Control"),
+          N_("Manages frame rate to balance performance, reduce tearing, or save power."),
+#if defined(NXDK) || defined(USE_SDL1)
+          FrameRateControl::CPUSleep
 #else
-          true
+          FrameRateControl::VerticalSync
 #endif
-          )
+          ,
+          {
+              { FrameRateControl::None, N_("None") },
+#ifndef USE_SDL1
+              { FrameRateControl::VerticalSync, N_("Vertical Sync") },
 #endif
+              { FrameRateControl::CPUSleep, N_("Limit FPS") },
+          })
     , gammaCorrection("Gamma Correction", OptionEntryFlags::Invisible, "Gamma Correction", "Gamma correction level.", 100)
     , zoom("Zoom", OptionEntryFlags::None, N_("Zoom"), N_("Zoom on when enabled."), false)
     , colorCycling("Color Cycling", OptionEntryFlags::None, N_("Color Cycling"), N_("Color cycling effect used for water, lava, and acid animation."), true)
@@ -997,7 +1004,6 @@ GraphicsOptions::GraphicsOptions()
     , hardwareCursorForItems("Hardware Cursor For Items", OptionEntryFlags::CantChangeInGame | (HardwareCursorSupported() ? OptionEntryFlags::None : OptionEntryFlags::Invisible), N_("Hardware Cursor For Items"), N_("Use a hardware cursor for items."), false)
     , hardwareCursorMaxSize("Hardware Cursor Maximum Size", OptionEntryFlags::CantChangeInGame | OptionEntryFlags::RecreateUI | (HardwareCursorSupported() ? OptionEntryFlags::None : OptionEntryFlags::Invisible), N_("Hardware Cursor Maximum Size"), N_("Maximum width / height for the hardware cursor. Larger cursors fall back to software."), 128, { 0, 64, 128, 256, 512 })
 #endif
-    , limitFPS("FPS Limiter", OptionEntryFlags::None, N_("FPS Limiter"), N_("FPS is limited to avoid high CPU load. Limit considers refresh rate."), true)
     , showFPS("Show FPS", OptionEntryFlags::None, N_("Show FPS"), N_("Displays the FPS in the upper left corner of the screen."), false)
 {
 	resolution.SetValueChangedCallback(ResizeWindow);
@@ -1008,7 +1014,7 @@ GraphicsOptions::GraphicsOptions()
 #ifndef USE_SDL1
 	scaleQuality.SetValueChangedCallback(ReinitializeTexture);
 	integerScaling.SetValueChangedCallback(ReinitializeIntegerScale);
-	vSync.SetValueChangedCallback(ReinitializeRenderer);
+	frameRateControl.SetValueChangedCallback(ReinitializeRenderer);
 #endif
 	showFPS.SetValueChangedCallback(OptionShowFPSChanged);
 }
@@ -1027,11 +1033,10 @@ std::vector<OptionEntryBase *> GraphicsOptions::GetEntries()
 		&upscale,
 		&scaleQuality,
 		&integerScaling,
-		&vSync,
 #endif
+		&frameRateControl,
 		&gammaCorrection,
 		&zoom,
-		&limitFPS,
 		&showFPS,
 		&colorCycling,
 		&alternateNestArt,

diff --git a/Source/options.h b/Source/options.h
@@ -48,6 +48,14 @@ enum class ScalingQuality : uint8_t {
 	AnisotropicFiltering,
 };
 
+enum class FrameRateControl : uint8_t {
+	None = 0,
+#ifndef USE_SDL1
+	VerticalSync = 1,
+#endif
+	CPUSleep = 2,
+};
+
 enum class Resampler : uint8_t {
 #ifdef DEVILUTIONX_RESAMPLER_SPEEX
 	Speex = 0,
@@ -499,9 +507,9 @@ struct GraphicsOptions : OptionCategoryBase {
 	OptionEntryEnum<ScalingQuality> scaleQuality;
 	/** @brief Only scale by values divisible by the width and height. */
 	OptionEntryBoolean integerScaling;
-	/** @brief Enable vsync on the output. */
-	OptionEntryBoolean vSync;
 #endif
+	/** @brief Limit frame rate either for vsync or CPU load. */
+	OptionEntryEnum<FrameRateControl> frameRateControl;
 	/** @brief Gamma correction level. */
 	OptionEntryInt<int> gammaCorrection;
 	/** @brief Zoom on start. */
@@ -518,8 +526,6 @@ struct GraphicsOptions : OptionCategoryBase {
 	/** @brief Maximum width / height for the hardware cursor. Larger cursors fall back to software. */
 	OptionEntryInt<int> hardwareCursorMaxSize;
 #endif
-	/** @brief Enable FPS Limiter. */
-	OptionEntryBoolean limitFPS;
 	/** @brief Show FPS, even without the -f command line flag. */
 	OptionEntryBoolean showFPS;
 };

diff --git a/Source/utils/display.cpp b/Source/utils/display.cpp
@@ -121,9 +121,9 @@ void FreeRenderer()
 		renderer = nullptr;
 	}
 
-#if defined(_WIN32) && !defined(NXDK)
+#if defined(_WIN32) && !defined(NXDK) && !defined(USE_SDL1)
 	// On Windows 11 the directx9 VSYNC timer doesn't get recreated properly, see https://github.com/libsdl-org/SDL/issues/5099
-	if (wasD3D9 && *sgOptions.Graphics.upscale && *sgOptions.Graphics.vSync) {
+	if (wasD3D9 && *sgOptions.Graphics.upscale && *sgOptions.Graphics.frameRateControl != FrameRateControl::VerticalSync) {
 		std::string title = SDL_GetWindowTitle(ghMainWnd);
 		Uint32 flags = SDL_GetWindowFlags(ghMainWnd);
 		Rectangle dimensions;
@@ -418,7 +418,7 @@ void ReinitializeRenderer()
 	if (*sgOptions.Graphics.upscale) {
 		Uint32 rendererFlags = 0;
 
-		if (*sgOptions.Graphics.vSync) {
+		if (*sgOptions.Graphics.frameRateControl == FrameRateControl::VerticalSync) {
 			rendererFlags |= SDL_RENDERER_PRESENTVSYNC;
 		}