That's interesting. The android frame work will hard coded to use
RGBA_8888 and set it as window format here:

https://android.googlesource.com/platform/frameworks/native/+/refs/heads/master/opengl/libs/EGL/eglApi.cpp#738

Do you have a custom version of android which do different code here?

For other GPU, like intel, if we choose a EGL config with BGRA ,
finally we got a wrong color on screen.

On Thu, Aug 15, 2019 at 12:49 PM Mauro Rossi <issor.or...@gmail.com> wrote:
>
> Hi,
>
> sorry if I'm communicating in dedicated thread, but I don't know how to reply 
> to existing one.
>
> The proposed patch is based on the wrong assumption that all drivers used 
> with Android have RGBA_8888, which is not correct, for example nouveau does 
> not support RGBA on primary planes, infact we have a fallback to simpler EGL 
> query in android-x86 and we use BGRA_8888 (pixel format = 5)
>
> If patch does not solve a specific problem and it will cause a regression at 
> least in nouveau, it is recommended to abandon the patch
>
> Thanks for your feedbacks
>
> Mauro
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