sdl: vid: fix washed out screen on Windows and probably other platforms(#50)

engine/platform/sdl/vid_sdl.c

@@ -712,27 +712,73 @@ void GL_SwapBuffers()
 	SDL_GL_SwapWindow( host.hWnd );
 }
 
-
 int GL_SetAttribute( int attr, int val )
 {
 	switch( attr )
 	{
+#define MAP_REF_API_ATTRIBUTE_TO_SDL( name ) case REF_##name: return SDL_GL_SetAttribute( SDL_##name, val );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_RED_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_GREEN_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_BLUE_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_ALPHA_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_DOUBLEBUFFER );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_DEPTH_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_STENCIL_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_MULTISAMPLEBUFFERS );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_MULTISAMPLESAMPLES );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_ACCELERATED_VISUAL );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_MAJOR_VERSION );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_MINOR_VERSION );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_EGL );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_FLAGS );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_SHARE_WITH_CURRENT_CONTEXT );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_FRAMEBUFFER_SRGB_CAPABLE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_RELEASE_BEHAVIOR );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_RESET_NOTIFICATION );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_NO_ERROR );
 	case REF_GL_CONTEXT_PROFILE_MASK:
 #ifdef SDL_HINT_OPENGL_ES_DRIVER
 		if (val == REF_GL_CONTEXT_PROFILE_ES)
 			SDL_SetHint(SDL_HINT_OPENGL_ES_DRIVER, "1");
 #endif // SDL_HINT_OPENGL_ES_DRIVER
-		break;
-	default:
-		break;
+		return SDL_GL_SetAttribute( SDL_GL_CONTEXT_PROFILE_MASK, val );
+#undef MAP_REF_API_ATTRIBUTE_TO_SDL
 	}
 
-	return SDL_GL_SetAttribute( (SDL_GLattr)attr, val );
+	ASSERT( 0 );
+	return -1;
 }
 
 int GL_GetAttribute( int attr, int *val )
 {
-	return SDL_GL_GetAttribute( (SDL_GLattr)attr, val );
+	switch( attr )
+	{
+#define MAP_REF_API_ATTRIBUTE_TO_SDL( name ) case REF_##name: return SDL_GL_GetAttribute( SDL_##name, val );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_RED_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_GREEN_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_BLUE_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_ALPHA_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_DOUBLEBUFFER );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_DEPTH_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_STENCIL_SIZE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_MULTISAMPLEBUFFERS );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_MULTISAMPLESAMPLES );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_ACCELERATED_VISUAL );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_MAJOR_VERSION );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_MINOR_VERSION );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_EGL );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_FLAGS );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_SHARE_WITH_CURRENT_CONTEXT );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_FRAMEBUFFER_SRGB_CAPABLE );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_RELEASE_BEHAVIOR );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_RESET_NOTIFICATION );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_NO_ERROR );
+		MAP_REF_API_ATTRIBUTE_TO_SDL( GL_CONTEXT_PROFILE_MASK );
+#undef MAP_REF_API_ATTRIBUTE_TO_SDL
+	}
+
+	ASSERT( 0 );
+	return 0;
 }
 
 #ifndef EGL_LIB

engine/ref_api.h

@@ -169,27 +169,19 @@ typedef enum
 	SAFE_DONTCARE     // ignore everything, let SDL/EGL decide
 } ref_safegl_context_t;
 
-// binary compatible with SDL2
 enum // OpenGL configuration attributes
 {
 	REF_GL_RED_SIZE,
 	REF_GL_GREEN_SIZE,
 	REF_GL_BLUE_SIZE,
 	REF_GL_ALPHA_SIZE,
-	// UNUSED_REF_GL_BUFFER_SIZE,
-	REF_GL_DOUBLEBUFFER = REF_GL_ALPHA_SIZE + 1,
+	REF_GL_DOUBLEBUFFER,
 	REF_GL_DEPTH_SIZE,
 	REF_GL_STENCIL_SIZE,
-	// UNUSED_REF_GL_ACCUM_RED_SIZE,
-	// UNUSED_REF_GL_ACCUM_GREEN_SIZE,
-	// UNUSED_REF_GL_ACCUM_BLUE_SIZE,
-	// UNUSED_REF_GL_ACCUM_ALPHA_SIZE,
-	// UNUSED_REF_GL_STEREO,
-	REF_GL_MULTISAMPLEBUFFERS = REF_GL_STENCIL_SIZE + 5,
+	REF_GL_MULTISAMPLEBUFFERS,
 	REF_GL_MULTISAMPLESAMPLES,
 	REF_GL_ACCELERATED_VISUAL,
-	// UNUSED_REF_GL_RETAINED_BACKING,
-	REF_GL_CONTEXT_MAJOR_VERSION = REF_GL_ACCELERATED_VISUAL + 1,
+	REF_GL_CONTEXT_MAJOR_VERSION,
 	REF_GL_CONTEXT_MINOR_VERSION,
 	REF_GL_CONTEXT_EGL,
 	REF_GL_CONTEXT_FLAGS,