[Intel-gfx] gen6 (SNB) depthbuffer issue with OpenGL games

[Ian Romanick]

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On 07/19/2011 07:58 AM, Nicolas Kalkhof wrote:
> Hi there,
> 
> I've experienced a strange depth buffer issue recently with OpenGL games
> (see attached screenshots). It seems that the depth buffer fails on some
> pixels. This problem was introduced somewhere between
> Kernel-3.0.0-rc6-git6 and kernel-3.0.0-rc7. Both xf-86-video-intel and
> mesa are latest git.
> Could someone please look into it?

That's very odd.  Any chance you could bisect to find the bad commit?
You should be able to just bisect the drivers/gpu/drm directory.  I'm a
bit suspicious that this is a kernel issue.  There were only 5 commits
in drivers/gpu/drm from rc6 to rc7, and none of them should affect any
Intel GPUs at all.
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