implement support checks

FNA-XNA · Apr 11, 2024 · 537549d · 537549d
1 parent ae97c2f
commit 537549d
Showing 1 changed file with 64 additions and 13 deletions.
diff --git a/src/FNA3D_Driver_SDL.c b/src/FNA3D_Driver_SDL.c
@@ -3630,48 +3630,74 @@ static int32_t SDLGPU_QueryPixelCount(
 	return (int32_t) pixelCount;
 }
 
+/* Support Checks */
+
 static uint8_t SDLGPU_SupportsDXT1(FNA3D_Renderer *driverData)
 {
-	/* TODO */
-	return 1;
+	SDLGPU_Renderer *renderer = (SDLGPU_Renderer*) driverData;
+	return SDL_GpuIsTextureFormatSupported(
+		renderer->device,
+		SDL_GPU_TEXTUREFORMAT_BC1,
+		SDL_GPU_TEXTURETYPE_2D,
+		SDL_GPU_TEXTUREUSAGE_COLOR_TARGET_BIT | SDL_GPU_TEXTUREUSAGE_SAMPLER_BIT
+	);
 }
 
 static uint8_t SDLGPU_SupportsS3TC(FNA3D_Renderer *driverData)
 {
-	/* TODO */
-	return 1;
+	SDLGPU_Renderer *renderer = (SDLGPU_Renderer*) driverData;
+	return
+		SDL_GpuIsTextureFormatSupported(
+			renderer->device,
+			SDL_GPU_TEXTUREFORMAT_BC2,
+			SDL_GPU_TEXTURETYPE_2D,
+			SDL_GPU_TEXTUREUSAGE_COLOR_TARGET_BIT | SDL_GPU_TEXTUREUSAGE_SAMPLER_BIT
+		) ||
+		SDL_GpuIsTextureFormatSupported(
+			renderer->device,
+			SDL_GPU_TEXTUREFORMAT_BC3,
+			SDL_GPU_TEXTURETYPE_2D,
+			SDL_GPU_TEXTUREUSAGE_COLOR_TARGET_BIT | SDL_GPU_TEXTUREUSAGE_SAMPLER_BIT
+		);
 }
 
 static uint8_t SDLGPU_SupportsBC7(FNA3D_Renderer *driverData)
 {
-	/* TODO */
-	return 1;
+	SDLGPU_Renderer *renderer = (SDLGPU_Renderer*) driverData;
+	return SDL_GpuIsTextureFormatSupported(
+		renderer->device,
+		SDL_GPU_TEXTUREFORMAT_BC7,
+		SDL_GPU_TEXTURETYPE_2D,
+		SDL_GPU_TEXTUREUSAGE_COLOR_TARGET_BIT | SDL_GPU_TEXTUREUSAGE_SAMPLER_BIT
+	);
 }
 
 static uint8_t SDLGPU_SupportsHardwareInstancing(FNA3D_Renderer *driverData)
 {
-	/* TODO */
 	return 1;
 }
 
 static uint8_t SDLGPU_SupportsNoOverwrite(FNA3D_Renderer *driverData)
 {
-	/* TODO */
 	return 1;
 }
 
 static uint8_t SDLGPU_SupportsSRGBRenderTargets(FNA3D_Renderer *driverData)
 {
-	/* TODO */
-	return 1;
+	SDLGPU_Renderer *renderer = (SDLGPU_Renderer*) driverData;
+	return SDL_GpuIsTextureFormatSupported(
+		renderer->device,
+		SDL_GPU_TEXTUREFORMAT_R8G8B8A8_SRGB,
+		SDL_GPU_TEXTURETYPE_2D,
+		SDL_GPU_TEXTUREUSAGE_COLOR_TARGET_BIT | SDL_GPU_TEXTUREUSAGE_SAMPLER_BIT
+	);
 }
 
 static void SDLGPU_GetMaxTextureSlots(
 	FNA3D_Renderer *driverData,
 	int32_t *textures,
 	int32_t *vertexTextures
 ) {
-	/* TODO */
 	*textures = MAX_TEXTURE_SAMPLERS;
 	*vertexTextures = MAX_VERTEXTEXTURE_SAMPLERS;
 }
@@ -3681,8 +3707,33 @@ static int32_t SDLGPU_GetMaxMultiSampleCount(
 	FNA3D_SurfaceFormat format,
 	int32_t multiSampleCount
 ) {
-	/* TODO */
-	return 8;
+	SDLGPU_Renderer *renderer = (SDLGPU_Renderer*) driverData;
+
+	SDL_GpuSampleCount sampleCount =
+		SDL_GpuGetBestSampleCount(
+			renderer->device,
+			SDL_GPU_TEXTUREFORMAT_R8G8B8A8,
+			SDL_GPU_SAMPLECOUNT_8
+		);
+
+	switch (sampleCount)
+	{
+		case SDL_GPU_SAMPLECOUNT_1:
+			return 1;
+
+		case SDL_GPU_SAMPLECOUNT_2:
+			return 2;
+
+		case SDL_GPU_SAMPLECOUNT_4:
+			return 4;
+
+		case SDL_GPU_SAMPLECOUNT_8:
+			return 8;
+
+		default:
+			FNA3D_LogError("Unrecognized sample count value!");
+			return 1;
+	}
 }
 
 /* Debugging */