[Nouveau] [Bug 26964] New: Tearing video playback if XRender enabled

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=26964

           Summary: Tearing video playback if XRender enabled
           Product: xorg
           Version: 7.5
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: runetmember at gmail.com
         QAContact: xorg-team at lists.x.org


Enabling XRender composite mode gives tearing video playback problem.
"UnredirectFullscreen=true" in [Compositing] section of
~/.kde/share/config/kwinrc solves problem, but only for fullscreen playback.
Disabling composing completly solves problem, but it not suitable.
In testing I use xv video output, because x11 and gl output methods have bad
performance at all.
Also, why I ask about this problem here:
https://bugs.kde.org/show_bug.cgi?id=229990


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