[Bug 99219] The Stanley Parable GPU hang when starting a new game

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99219

--- Comment #3 from Samuel Pitoiset <samuel.pitoiset at gmail.com> ---
It's actually a regression in mesa, works fine with 13.0.2.

After bisecting, the first bad commit is:

commit ed3190b3f3a776fc8c75b1e6130a88079166d115
Author: Marek Olšák <marek.olsak at amd.com>
Date:   Sun Nov 13 18:41:43 2016 +0100

    radeonsi: don't export ClipVertex and ClipDistance[] if clipping is
disabled

    This is the first user of optimized monolithic shader variants.

    Cull distances can't be disabled by states.

    Tested-by: Edmondo Tommasina <edmondo.tommasina at gmail.com>
    Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>

But this doesn't seem to be actually related to the clip planes optimization
because
if you replay the trace with R600_DUMP_SHADERS=y, it no longer crashes. If my
understanding
is correct, it won't compile shaders asynchronously. Forcing
num_compiler_threads = 1 in
si_pipe.c also "fixes" the hang.

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