Re: [PATCH v2 0/2] MR9125: mfmediaengine: Suppport TransferVideoFrame() to IWICBitmap.

[Nikolay Sivov (＠nsivov)]

Nikolay Sivov (@nsivov) commented about dlls/mfmediaengine/main.c:
> - {
> -
>    FIXME("Scaling/letterboxing is not implemented.\n");
> -
>    goto done;
> - }
> -
> - if (!IsEqualGUID(&format, &GUID_WICPixelFormat32bppBGR) && !IsEqualGUID(&format, &GUID_WICPixelFormat32bppBGRA))
> - {
> -
>    FIXME("Unsupported format %s.\n", wine_dbgstr_guid(&format));
> -
>    goto done;
> - }
> - if (engine->video_frame.output_format != DXGI_FORMAT_B8G8R8A8_UNORM
> -
>        && engine->video_frame.output_format != DXGI_FORMAT_B8G8R8X8_UNORM)
> - {
> -
>    FIXME("Unsupported format %#x.\n", engine->video_frame.output_format);
> -
>    goto done;
> - }

So does this silently drop alpha channel if it's doing DXGI_FORMAT_B8G8R8A8_UNORM -> WICPixelFormat32bppBGR?