vulkan: fix colors

src/modules/graphics/vulkan/Graphics.cpp

@@ -1014,7 +1014,8 @@ namespace love {
 
 			VkSurfaceFormatKHR Graphics::chooseSwapSurfaceFormat(const std::vector<VkSurfaceFormatKHR>& availableFormats) {
 				for (const auto& availableFormat : availableFormats) {
-					if (availableFormat.format == VK_FORMAT_B8G8R8A8_SRGB && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
+					// fixme: what if this format and colorspace is not available?
+					if (availableFormat.format == VK_FORMAT_B8G8R8A8_UNORM && availableFormat.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
 						return availableFormat;
 					}
 				}

src/modules/graphics/vulkan/Vulkan.cpp

@@ -202,7 +202,7 @@ namespace love {
 						textureFormat.internalFormatRepresentation = FORMATREPRESENTATION_UINT;
 						break;
 					case PIXELFORMAT_RGBA8_UNORM:
-						textureFormat.internalFormat = VK_FORMAT_R8G8B8A8_SRGB;	// fixme?
+						textureFormat.internalFormat = VK_FORMAT_R8G8B8A8_UNORM;
 						textureFormat.internalFormatRepresentation = FORMATREPRESENTATION_FLOAT;
 						break;
 					case PIXELFORMAT_RGBA8_UNORM_sRGB: