[Mesa-dev] [Bug 94955] Uninitialized variables leads to random segfaults (valgrind log, apitrace attached)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Apr 22 01:01:28 UTC 2016


--- Comment #17 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to Bruce Cherniak from comment #11)
> Created attachment 123134 [details]
> tex_sample_func
> Here's the ir for the jit'd sampler.  I forced "use_tex_func" so it didn't
> inline with the FS, although it fails the same either way.

Actually for me the sampler which crashes is a bog-standard rgba8 one, with
linear filtering, repeat wrap, npot.
I think I found the problem, the coords are all nans (might just be the shader
doing this), and the wrap code isn't quite robust against that. Nasty.

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