Created attachment 124387 [details] screenshot After some recent game's update the game renders way too dark when viewing certain objects. The problem goes away or reappears depending on camera position. Reproduces on both Haswell and Skylake, works fine on r600g and llvmpipe. Mesa 10.1.3 does not have such problems so I've ran a bisect: commit d47405eb707b9921f70454049677a9d504ee3fa6 Author: Jason Ekstrand <jason.ekstrand@intel.com> Date: Fri Apr 10 16:24:11 2015 -0700 i965: Use NIR by default for fragment shaders Unfortunately the trace is rather large because the problem usually shows up further from save points. It shows up in the last frame of this trace: https://drive.google.com/file/d/0Bz8fw_SGGDzsejZiR1Y1anN3aHM/view?usp=sharing
There's now a patch on the mailing list that should fix this: https://lists.freedesktop.org/archives/mesa-dev/2016-June/120874.html
This should be fixed by the following commit: commit 68e308d85355079ad93bd4e16cba164784740fdf Author: Jason Ekstrand <jason.ekstrand@intel.com> Date: Sat Jun 18 12:30:36 2016 -0700 nir/algebraic: Remove imprecise flog2 optimizations
Confirmed, thanks, but the game still shows similar symptoms, bug 96607 filled.
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