Implement SDLGPUDriver

Co-authored-by: Ethan Lee <[email protected]>
Co-authored-by: Caleb Cornett <[email protected]>

CMakeLists.txt

@@ -44,6 +44,9 @@ add_definitions(
 	-DFNA3D_DRIVER_VULKAN
 	-DFNA3D_DRIVER_OPENGL
 )
+if(BUILD_SDL3)
+	add_definitions(-DFNA3D_DRIVER_SDL)
+endif()
 add_definitions(
 	-DMOJOSHADER_NO_VERSION_INCLUDE
 	-DMOJOSHADER_USE_SDL_STDLIB
@@ -101,6 +104,7 @@ add_library(FNA3D
 	src/FNA3D.c
 	src/FNA3D_Driver_D3D11.c
 	src/FNA3D_Driver_OpenGL.c
+	src/FNA3D_Driver_SDL.c
 	src/FNA3D_Driver_Vulkan.c
 	src/FNA3D_Image.c
 	src/FNA3D_CommandBuffer.c

replay/replay.c

@@ -105,6 +105,7 @@ static uint8_t replay(const char *filename, uint8_t forceDebugMode)
 	#define READ(val) SDL_ReadIO(ops, &val, sizeof(val))
 
 	SDL_WindowFlags flags;
+	const SDL_DisplayMode *mode;
 	SDL_IOStream *ops;
 	SDL_Event evt;
 	uint8_t mark, run;
@@ -280,15 +281,17 @@ static uint8_t replay(const char *filename, uint8_t forceDebugMode)
 	READ(debugMode);
 
 	/* Create a window alongside the device */
-	flags = FNA3D_PrepareWindowAttributes();
+	flags = FNA3D_PrepareWindowAttributes() | SDL_WINDOW_HIGH_PIXEL_DENSITY;
 	if (presentationParameters.isFullScreen)
 	{
 		flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
 	}
+	mode = SDL_GetDesktopDisplayMode(SDL_GetPrimaryDisplay());
+	SDL_Log("Pixel density is %f", mode->pixel_density);
 	presentationParameters.deviceWindowHandle = SDL_CreateWindow(
 		"FNA3D Replay",
-		presentationParameters.backBufferWidth,
-		presentationParameters.backBufferHeight,
+		(int) (presentationParameters.backBufferWidth / mode->pixel_density),
+		(int) (presentationParameters.backBufferHeight / mode->pixel_density),
 		flags
 	);
 	device = FNA3D_CreateDevice(&presentationParameters, debugMode || forceDebugMode);
@@ -690,8 +693,8 @@ static uint8_t replay(const char *filename, uint8_t forceDebugMode)
 			);
 			SDL_SetWindowSize(
 				presentationParameters.deviceWindowHandle,
-				presentationParameters.backBufferWidth,
-				presentationParameters.backBufferHeight
+				(int) (presentationParameters.backBufferWidth / mode->pixel_density),
+				(int) (presentationParameters.backBufferHeight / mode->pixel_density)
 			);
 			FNA3D_ResetBackbuffer(device, &presentationParameters);
 			break;

src/FNA3D.c

@@ -40,6 +40,9 @@
 /* Drivers */
 
 static const FNA3D_Driver *drivers[] = {
+#if FNA3D_DRIVER_SDL
+	&SDLGPUDriver,
+#endif
 #if FNA3D_DRIVER_D3D11
 	&D3D11Driver,
 #endif

src/FNA3D_Driver.h

@@ -828,6 +828,7 @@ typedef struct FNA3D_Driver
 FNA3D_SHAREDINTERNAL FNA3D_Driver VulkanDriver;
 FNA3D_SHAREDINTERNAL FNA3D_Driver D3D11Driver;
 FNA3D_SHAREDINTERNAL FNA3D_Driver OpenGLDriver;
+FNA3D_SHAREDINTERNAL FNA3D_Driver SDLGPUDriver;
 FNA3D_SHAREDINTERNAL FNA3D_Driver GNMXDriver;
 
 #endif /* FNA3D_DRIVER_H */