[Mesa-dev] [PATCH 2/2] egl: add EGL_platform_device support

[Marek Olšák]

On Wed, Apr 10, 2019 at 5:37 AM Mathias Fröhlich <Mathias.Froehlich at gmx.net>
wrote:

> Hi Emil,
>
> On Monday, 8 April 2019 12:28:55 CEST Emil Velikov wrote:
> > > Now that I have been putting together a test case for the the actual
> use
> > > I do see some issues with the pbuffer code path. Well - still
> investigating
> > > if the test is wrong or the result.
> > >
> > Actually I do recall some issues with surfaceless (which is
> > practically identical to this code) and some (with alpha?) formats.
> > My memory is pretty flaky - I would suggest trying various configs:
> > with, w/o alpha, 32/24 etc.
>
> Ok, yesterday evening I spent some time to look into that.
> Finally the egl config mechanism puts double buffer visuals
> to the pbuffer surface which in turn makes mesa think if should look
> at the back buffer which is in turn not set in the pbuffer gl_framebuffer.
> That one makes my drivers just throw away the rendering result so a
> read back does not show anything usable.
>
> With that fixed I get in principle correct results.
>
> My gitlab repo contains a branch that sketches my quick fix that I use to
> make
> at least the new piglit test case work. No further testing done.
> But may be that helps in getting something reasonable out.
>

So we can push this series now, right?

Marek
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