Added support for SDL_PIXELFORMAT_ABGR8888 textures

This is the output format of stb_image for image decoding, so let's avoid a texture format conversion where possible.

Also standardized SDL_PIXELFORMAT_ARGB8888 as the default texture format for all renderers.

src/render/direct3d11/SDL_render_d3d11.c

@@ -231,6 +231,9 @@ SDL_PixelFormat D3D11_DXGIFormatToSDLPixelFormat(DXGI_FORMAT dxgiFormat)
     case DXGI_FORMAT_B8G8R8A8_UNORM:
     case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
         return SDL_PIXELFORMAT_ARGB8888;
+    case DXGI_FORMAT_R8G8B8A8_UNORM:
+    case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
+        return SDL_PIXELFORMAT_ABGR8888;
     case DXGI_FORMAT_B8G8R8X8_UNORM:
     case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
         return SDL_PIXELFORMAT_XRGB8888;
@@ -255,6 +258,11 @@ static DXGI_FORMAT SDLPixelFormatToDXGITextureFormat(Uint32 format, Uint32 outpu
             return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
         }
         return DXGI_FORMAT_B8G8R8A8_UNORM;
+    case SDL_PIXELFORMAT_ABGR8888:
+        if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
+            return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
+        }
+        return DXGI_FORMAT_R8G8B8A8_UNORM;
     case SDL_PIXELFORMAT_XRGB8888:
         if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
             return DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;
@@ -285,6 +293,11 @@ static DXGI_FORMAT SDLPixelFormatToDXGIMainResourceViewFormat(Uint32 format, Uin
             return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
         }
         return DXGI_FORMAT_B8G8R8A8_UNORM;
+    case SDL_PIXELFORMAT_ABGR8888:
+        if (colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
+            return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
+        }
+        return DXGI_FORMAT_R8G8B8A8_UNORM;
     case SDL_PIXELFORMAT_XRGB8888:
         if (colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
             return DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;
@@ -2718,6 +2731,7 @@ static bool D3D11_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL
 
     renderer->name = D3D11_RenderDriver.name;
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ARGB8888);
+    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ABGR8888);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_XRGB8888);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_XBGR2101010);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA64_FLOAT);

src/render/direct3d12/SDL_render_d3d12.c

@@ -298,6 +298,9 @@ static SDL_PixelFormat D3D12_DXGIFormatToSDLPixelFormat(DXGI_FORMAT dxgiFormat)
     case DXGI_FORMAT_B8G8R8A8_UNORM:
     case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
         return SDL_PIXELFORMAT_ARGB8888;
+    case DXGI_FORMAT_R8G8B8A8_UNORM:
+    case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
+        return SDL_PIXELFORMAT_ABGR8888;
     case DXGI_FORMAT_B8G8R8X8_UNORM:
     case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
         return SDL_PIXELFORMAT_XRGB8888;
@@ -322,6 +325,11 @@ static DXGI_FORMAT SDLPixelFormatToDXGITextureFormat(Uint32 format, Uint32 outpu
             return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
         }
         return DXGI_FORMAT_B8G8R8A8_UNORM;
+    case SDL_PIXELFORMAT_ABGR8888:
+        if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
+            return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
+        }
+        return DXGI_FORMAT_R8G8B8A8_UNORM;
     case SDL_PIXELFORMAT_XRGB8888:
         if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
             return DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;
@@ -352,6 +360,11 @@ static DXGI_FORMAT SDLPixelFormatToDXGIMainResourceViewFormat(Uint32 format, Uin
             return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
         }
         return DXGI_FORMAT_B8G8R8A8_UNORM;
+    case SDL_PIXELFORMAT_ABGR8888:
+        if (colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
+            return DXGI_FORMAT_R8G8B8A8_UNORM_SRGB;
+        }
+        return DXGI_FORMAT_R8G8B8A8_UNORM;
     case SDL_PIXELFORMAT_XRGB8888:
         if (colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
             return DXGI_FORMAT_B8G8R8X8_UNORM_SRGB;
@@ -3254,6 +3267,7 @@ bool D3D12_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL_Proper
 
     renderer->name = D3D12_RenderDriver.name;
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ARGB8888);
+    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ABGR8888);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_XRGB8888);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_XBGR2101010);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA64_FLOAT);

src/render/gpu/SDL_render_gpu.c

@@ -1242,10 +1242,10 @@ static bool GPU_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL_P
 
     SDL_SetGPUAllowedFramesInFlight(data->device, 1);
 
-    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA32);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_BGRA32);
-    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBX32);
+    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA32);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_BGRX32);
+    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBX32);
 
     SDL_SetNumberProperty(SDL_GetRendererProperties(renderer), SDL_PROP_RENDERER_MAX_TEXTURE_SIZE_NUMBER, 16384);
 

src/render/opengles2/SDL_render_gles2.c

@@ -2099,8 +2099,8 @@ static bool GLES2_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL
     renderer->window = window;
 
     renderer->name = GLES2_RenderDriver.name;
-    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA32);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_BGRA32);
+    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA32);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_BGRX32);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBX32);
 

src/render/vulkan/SDL_render_vulkan.c

@@ -398,6 +398,8 @@ static SDL_PixelFormat VULKAN_VkFormatToSDLPixelFormat(VkFormat vkFormat)
     switch (vkFormat) {
     case VK_FORMAT_B8G8R8A8_UNORM:
         return SDL_PIXELFORMAT_ARGB8888;
+    case VK_FORMAT_R8G8B8A8_UNORM:
+        return SDL_PIXELFORMAT_ABGR8888;
     case VK_FORMAT_A2R10G10B10_UNORM_PACK32:
         return SDL_PIXELFORMAT_ABGR2101010;
     case VK_FORMAT_R16G16B16A16_SFLOAT:
@@ -452,6 +454,11 @@ static VkFormat SDLPixelFormatToVkTextureFormat(Uint32 format, Uint32 output_col
             return VK_FORMAT_B8G8R8A8_SRGB;
         }
         return VK_FORMAT_B8G8R8A8_UNORM;
+    case SDL_PIXELFORMAT_ABGR8888:
+        if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
+            return VK_FORMAT_R8G8B8A8_SRGB;
+        }
+        return VK_FORMAT_R8G8B8A8_UNORM;
     case SDL_PIXELFORMAT_YUY2:
         return VK_FORMAT_G8B8G8R8_422_UNORM;
     case SDL_PIXELFORMAT_UYVY:
@@ -4303,6 +4310,7 @@ static bool VULKAN_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SD
 
     renderer->name = VULKAN_RenderDriver.name;
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ARGB8888);
+    SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ABGR8888);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_ABGR2101010);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA64_FLOAT);
     SDL_SetNumberProperty(SDL_GetRendererProperties(renderer), SDL_PROP_RENDERER_MAX_TEXTURE_SIZE_NUMBER, 16384);