[Xquartz-dev] Is the GLX Accumulation Buffer broken ?

[Frava]

You're right,

the two logs are from different Macs, but it was just an example... If you
prefer I can show you a few hundreds of logs from all the Mac boxes (10.7 &
10.8 with Intel, ATI and Nvidia GPUs) that I administer here in office.

I only noticed that one of our applications stopped working as soon as we
updated some boxes to OS X 10.7.5 (this application never worked on
10.8.*). After some debugging I managed to understand that it is a GLX
accumulation buffer issue on 10.7.5 and 10.8.*

Regards,
Rafael Navaza.


2013/1/9 Jeremy Huddleston Sequoia <jeremyhu at freedesktop.org>

> Your glxinfo output is from two different graphics cards.  Your "working"
> copy was using:
>
> OpenGL vendor string: ATI Technologies Inc.
> OpenGL renderer string: AMD Radeon HD 6970M OpenGL Engine
> OpenGL version string: 2.1 ATI-7.18.18
>
> Your "failing" copy was using:
>
> OpenGL vendor string: Intel Inc.
> OpenGL renderer string: Intel HD Graphics 3000 OpenGL Engine
> OpenGL version string: 2.1 APPLE-7.32.12
>
> --Jeremy
>
> On Jan 9, 2013, at 8:28 AM, Frava <fravadona at gmail.com> wrote:
>
> > Dear XQuartz dev,
> >
> > I have an application that crashes on Lion 10.7.5 and Mountain Lion
> 10.8.* with the error : "Error: GLwMDrawingArea: requested visual not
> supported".
> >
> > By playing a little with the source code of that application I figured
> out that OS X 10.7.5 and 10.8.* do NOT support the GLX Accumulation Buffer
> anymore (You can check it by comparing the attached "glxinfo" output from
> OS X 10.7.4 with the one from OS X 10.7.5)
> >
> > So I have a few questions :
> >   - Is there an easy way to work aroud it ?
> >   - Where do I have to report this bug ? Apple ? XQuartz ? OpenMotif ?
> >
> > Best regards,
> > Rafael Navaza.
> <glxinfo_OS_X_10.7.4-XQuartz_2.7.4.log><glxinfo_OS_X_10.7.5-XQuartz_2.7.4.log>
> > _______________________________________________
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> > http://lists.macosforge.org/mailman/listinfo/xquartz-dev
>
>
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