[Mesa-dev] [Bug 103126] glthread doesn't offload anything in Witcher 2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103126

            Bug ID: 103126
           Summary: glthread doesn't offload anything in Witcher 2
           Product: Mesa
           Version: 17.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Mesa core
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: alexander at tsoy.me
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 134710
  --> https://bugs.freedesktop.org/attachment.cgi?id=134710&action=edit
witcher2_glthread.png

Even though there were reports that glthread improves performance in Witcher 2,
and it was enabled via drirc in recent mesa versions, it never worked for me.
"API-thread-offloaded-slots" always stays at zero, see attached screenshot.

In other games like Civilization 5 glthread works on my system as expected.


My current package versions:

linux-4.13.5
mesa-17.2.2
llvm-5.0.0
libdrm-2.4.82
xf86-video-amdgpu-1.4.0

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