[Bug 59899] New: Diagonal rendering artifacts on xbmc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59899

          Priority: medium
            Bug ID: 59899
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Diagonal rendering artifacts on xbmc
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: aeriksson at fastmail.fm
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Hi,

Just moved to xbmc (which uses gl), from freevo and more often than not, I get
extreme diagonal rendering artifacts on the gui. Pretty much each gui object (a
box, a single character, etc) has a diagonal split and either of the halves
renders o, and the other is mostly black. The diagonal flickers between the
corners at a rapid pase (~ 4 changes / second).

I files report on it at xbmc (http://trac.xbmc.org/ticket/14017) which also has
screenshots and a short movie grab attached.

Freevo worked ok, so I guess this is somehow related to new code paths executed
by xbmc (both 11.0 and 12-git suffers). I have no idea if it's kernel driver
related or somewhere higher in the stack.

Ideas to narrow this down appreciated. xbmc is the only app which behaves like
this.

-ath

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