[Mesa-dev] [PATCH 3/3] egl/x11: Handle both depth 30 formats for eglCreateImage().

[Ilia Mirkin]

On Thu, Apr 12, 2018 at 2:25 PM, Mario Kleiner
<mario.kleiner.de at gmail.com> wrote:
> On 04/12/2018 07:43 PM, Ilia Mirkin wrote:
>>
>> On Thu, Apr 12, 2018 at 1:18 PM, Mario Kleiner
>> <mario.kleiner.de at gmail.com> wrote:
>>>
>>> X11 Prime renderoffload is another unsolved problem with nouveau depth
>>> 30.
>>> Currently we get swapped red-blue with intel + nvidia. We could extend
>>> the
>>> buffer creation code to convert nouveau's rgba format into the bgra
>>> format
>>> wanted by intel or amd display gpu's during the blitImage call for
>>> converting the tiled renderbuffer to the linear buffer, like i try for
>>> the
>>> wayland+egl case. But we'd need to know what the display gpu wants.
>>> Haven't
>>> looked into that.
>>
>>
>> FWIW the NVIDIA hardware is perfectly happy to render into BGR10_A2.
>> Just can't display it.
>>
>>    -ilia
>>
>
> Yes, but due to one of your earlier depth 30 commits we only expose formats
> with PIPE_BIND_DISPLAY_TARGET, so that ability is hidden from driver
> independent code like the EGL platform code, GLX etc. to prevent exposing
> formats that the hw can't display.

Yeah. The generic code would have to distinguish between "rendering"
and "displaying.