[Bug 105290] [BSW] SynMark OglCSDof GPU hangs when shaders come from cache

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Mar 3 02:24:28 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=105290

--- Comment #2 from Jordan Justen <jljusten at gmail.com> ---
After some debug, I think this might be something about growing
the instruction cache between batches. The shader cache doesn't
upload the pre-compiled default programs at link time, so some
batches may run with a smaller instruction cache size. As more
programs are used, the instruction cache will grow, but something
is not working properly with this on BSW.

I found that if I disable the shader cache with
MESA_GLSL_CACHE_DISABLE=1 but also set shader_precompile=false,
then I also get the hang.

(Thanks Ken for suggesting shader_precompile=false.)

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