[Bug 97179] After launching games based on Source engine windows titles and borders are corrupted and sometimes frequently flicker

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97179

            Bug ID: 97179
           Summary: After launching games based on Source engine windows
                    titles and borders are corrupted and sometimes
                    frequently flicker
           Product: Mesa
           Version: 11.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: russianneuromancer at ya.ru
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 125474
  --> https://bugs.freedesktop.org/attachment.cgi?id=125474&action=edit
Corrupted title and borders

After launching games based on Source engine (and also Planetary Annihilation:
TITANS) windows titles and borders are corrupted and sometimes frequently
flicker (please look into attached screenshot). I guess this is happening with
combination of Source engine and KWin because Source engine ask compositor to
pause desktop effects (and probably PA do this too) and KWin honour this
request: https://bugs.kde.org/show_bug.cgi?id=349910

This issue in not reproducible with Unreal Engine or Unity3D engine based
games.

I using modesetting, DRI3, GLAMOR combination, but issue also reproducible with
other combinations too (with radeon, DRI2/DRI3, EXA/GLAMOR).
Most of the time I launch games via DRI_PRIME, but issue is also reproducible
when game is launched on iGPU. 

AMD A8-3500M, Radeon HD 6620G iGPU
AMD Radeon HD 6650M dGPU
Kubuntu 16.04 x86_64
Mesa 11.2, 12.1 git

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