The 10-bit texture formats have alpha on Direct3D

A similar change was made for Vulkan in https://github.com/libsdl-org/SDL/commit/a036aeda3b27ce7e115ebf25e717adf0bdabe91e

src/render/direct3d11/SDL_render_d3d11.c

@@ -238,7 +238,7 @@ SDL_PixelFormat D3D11_DXGIFormatToSDLPixelFormat(DXGI_FORMAT dxgiFormat)
     case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
         return SDL_PIXELFORMAT_XRGB8888;
     case DXGI_FORMAT_R10G10B10A2_UNORM:
-        return SDL_PIXELFORMAT_XBGR2101010;
+        return SDL_PIXELFORMAT_ABGR2101010;
     case DXGI_FORMAT_R16G16B16A16_FLOAT:
         return SDL_PIXELFORMAT_RGBA64_FLOAT;
     default:
@@ -251,7 +251,7 @@ static DXGI_FORMAT SDLPixelFormatToDXGITextureFormat(Uint32 format, Uint32 outpu
     switch (format) {
     case SDL_PIXELFORMAT_RGBA64_FLOAT:
         return DXGI_FORMAT_R16G16B16A16_FLOAT;
-    case SDL_PIXELFORMAT_XBGR2101010:
+    case SDL_PIXELFORMAT_ABGR2101010:
         return DXGI_FORMAT_R10G10B10A2_UNORM;
     case SDL_PIXELFORMAT_ARGB8888:
         if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
@@ -286,7 +286,7 @@ static DXGI_FORMAT SDLPixelFormatToDXGIMainResourceViewFormat(Uint32 format, Uin
     switch (format) {
     case SDL_PIXELFORMAT_RGBA64_FLOAT:
         return DXGI_FORMAT_R16G16B16A16_FLOAT;
-    case SDL_PIXELFORMAT_XBGR2101010:
+    case SDL_PIXELFORMAT_ABGR2101010:
         return DXGI_FORMAT_R10G10B10A2_UNORM;
     case SDL_PIXELFORMAT_ARGB8888:
         if (colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
@@ -2733,7 +2733,7 @@ static bool D3D11_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL
     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_ABGR2101010);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA64_FLOAT);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_YV12);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_IYUV);

src/render/direct3d12/SDL_render_d3d12.c

@@ -305,7 +305,7 @@ static SDL_PixelFormat D3D12_DXGIFormatToSDLPixelFormat(DXGI_FORMAT dxgiFormat)
     case DXGI_FORMAT_B8G8R8X8_UNORM_SRGB:
         return SDL_PIXELFORMAT_XRGB8888;
     case DXGI_FORMAT_R10G10B10A2_UNORM:
-        return SDL_PIXELFORMAT_XBGR2101010;
+        return SDL_PIXELFORMAT_ABGR2101010;
     case DXGI_FORMAT_R16G16B16A16_FLOAT:
         return SDL_PIXELFORMAT_RGBA64_FLOAT;
     default:
@@ -318,7 +318,7 @@ static DXGI_FORMAT SDLPixelFormatToDXGITextureFormat(Uint32 format, Uint32 outpu
     switch (format) {
     case SDL_PIXELFORMAT_RGBA64_FLOAT:
         return DXGI_FORMAT_R16G16B16A16_FLOAT;
-    case SDL_PIXELFORMAT_XBGR2101010:
+    case SDL_PIXELFORMAT_ABGR2101010:
         return DXGI_FORMAT_R10G10B10A2_UNORM;
     case SDL_PIXELFORMAT_ARGB8888:
         if (output_colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
@@ -353,7 +353,7 @@ static DXGI_FORMAT SDLPixelFormatToDXGIMainResourceViewFormat(Uint32 format, Uin
     switch (format) {
     case SDL_PIXELFORMAT_RGBA64_FLOAT:
         return DXGI_FORMAT_R16G16B16A16_FLOAT;
-    case SDL_PIXELFORMAT_XBGR2101010:
+    case SDL_PIXELFORMAT_ABGR2101010:
         return DXGI_FORMAT_R10G10B10A2_UNORM;
     case SDL_PIXELFORMAT_ARGB8888:
         if (colorspace == SDL_COLORSPACE_SRGB_LINEAR) {
@@ -3269,7 +3269,7 @@ bool D3D12_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL_Proper
     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_ABGR2101010);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_RGBA64_FLOAT);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_YV12);
     SDL_AddSupportedTextureFormat(renderer, SDL_PIXELFORMAT_IYUV);