Merge pull request #100 from tapir2342/query-max-texture-size

Add function to query max texture size

Author: NoelFB

Framework/Graphics/Graphics.cs

@@ -37,9 +37,7 @@ public static class Graphics
 		internal static void Initialize()
 		{
 			Renderer = Platform.FosterGetRenderer();
-
-			// TODO: actually query the graphics device for this
-			MaxTextureSize = 8192;
+			MaxTextureSize = Platform.FosterGetMaxTextureSize();
 		}
 
 		/// <summary>

Framework/Platform.cs

@@ -229,6 +229,8 @@ static unsafe Platform()
 	[LibraryImport(DLL)]
 	public static partial void FosterGetDisplaySize(out int width, out int height);
 	[LibraryImport(DLL)]
+	public static partial int FosterGetMaxTextureSize();
+	[LibraryImport(DLL)]
 	public static partial void FosterSetFlags(FosterFlags flags);
 	[LibraryImport(DLL)]
 	public static partial void FosterSetCentered();

Platform/include/foster_platform.h

@@ -618,6 +618,8 @@ FOSTER_API void FosterGetSizeInPixels(int* width, int* height);
 
 FOSTER_API void FosterGetDisplaySize(int* width, int* height);
 
+FOSTER_API int FosterGetMaxTextureSize();
+
 FOSTER_API void FosterSetFlags(FosterFlags flags);
 
 FOSTER_API void FosterSetCentered();

Platform/src/foster_platform.c

@@ -416,6 +416,12 @@ void FosterGetDisplaySize(int* width, int* height)
 	*height = mode.h;
 }
 
+int FosterGetMaxTextureSize()
+{
+	FOSTER_ASSERT_RUNNING_RET(FosterGetMaxTextureSize, -1);
+	return fstate.device.getMaxTextureSize();
+}
+
 void FosterSetFlags(FosterFlags flags)
 {
 	FOSTER_ASSERT_RUNNING(FosterSetFlags);

Platform/src/foster_renderer.h

@@ -13,6 +13,8 @@ typedef struct FosterRenderDevice
 	void (*shutdown)();
 	void (*frameBegin)();
 	void (*frameEnd)();
+
+	int (*getMaxTextureSize)();
 
 	FosterTexture* (*textureCreate)(int width, int height, FosterTextureFormat format);
 	void (*textureSetData)(FosterTexture* texture, void* data, int length);

Platform/src/foster_renderer_opengl.c

@@ -1098,6 +1098,11 @@ void FosterFrameEnd_OpenGL()
 	SDL_GL_SwapWindow(state->window);
 }
 
+int FosterGetMaxTextureSize_OpenGL()
+{
+	return fgl.max_texture_size;
+}
+
 FosterTexture* FosterTextureCreate_OpenGL(int width, int height, FosterTextureFormat format)
 {
 	FosterTexture_OpenGL result;
@@ -1820,6 +1825,7 @@ bool FosterGetDevice_OpenGL(FosterRenderDevice* device)
 	device->shutdown = FosterShutdown_OpenGL;
 	device->frameBegin = FosterFrameBegin_OpenGL;
 	device->frameEnd = FosterFrameEnd_OpenGL;
+	device->getMaxTextureSize = FosterGetMaxTextureSize_OpenGL;
 	device->textureCreate = FosterTextureCreate_OpenGL;
 	device->textureSetData = FosterTextureSetData_OpenGL;
 	device->textureGetData = FosterTextureGetData_OpenGL;