[Nouveau] [Bug 99400] [nouveau] garbled rendering with glamor on G71

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99400

--- Comment #22 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Olivier Fourdan from comment #21)
> Same links, updated files:
> 
> https://people.freedesktop.org/~ofourdan/bug99400/Xwayland.log
> https://people.freedesktop.org/~ofourdan/bug99400/Xwayland.trace
> 
> > For example frame 8932 (toward the end) is interesting imho, [...]
> 
> Let's forget about this, now that the new trace can replay on both intel and
> nouveau.
> 
> The problem I see is rather that I see no problem in apitrace, the frames
> look fine, AFAICT.

Hmmm... this is very unfortunate. And furthermore unfortunate is that this
trace makes use of NPOT textures, which my NV34 doesn't support (at least not
without some pretty nasty workarounds).

If replaying the trace yields the desired results, then this is all for naught.
You can try running

  apitrace dump-images --calls='*/draw' Xwayland.trace

and see if any of the screenshots generated show the artifacts. If not, then
this is a much more insidious problem.

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