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

[Marek Olšák]

I'd like to remove swrast from devices. It doesn't work (eglInitialize
fails) and I don't think I like swrast there. Any objections?

Marek

On Wed, Apr 17, 2019 at 12:38 AM Mathias Fröhlich <Mathias.Froehlich at gmx.net>
wrote:

>
> Hi,
>
> On Tuesday, 16 April 2019 17:50:33 CEST Marek Olšák wrote:
> > 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?
>
> Have you been looking at that branch?
>
> Its a sketch at best, and under some circumstance it still crashes
> somewhere
> in the back and forth of virtual methods in the loader and driver.
> I think it's going the riht direction, but until that is fixed I don't
> want to have my
> name tag on that unfinished stuff.
>
> If you want to help out, you can take a look at the egl config change in
> that branch. One needs to check if that 'double buffering visual' filter
> there
> works as expected. Throw test cases at it. At least punch that code through
> piglit and whatever test suite you have access.
>
> best
>
> Mathias
>
>
>
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