[Bug 92100] [ILK] GPU hang (and multiple fails) in piglit shader tests if spilling is forced in the vec4 backend

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Sep 25 06:09:27 PDT 2015


--- Comment #2 from Iago Toral <itoral at igalia.com> ---
Some additional information:

The hang happens because scratch reads/writes are not working properly for some
reason. In this particular test, the GPu hang is the result of an infinite loop
because variables involved in the loop condition are always read a value of 0
when unspilled.

I have been reviewing the ILK docs and the implementation but I have not found
anything wrong with it yet. I'll attach a minimum shader_test program
reproducing the problem soon.

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