[Bug 33824] New: [r600g, tiling] mipmap rendering errors / block artifacts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=33824

           Summary: [r600g, tiling] mipmap rendering errors / block
                    artifacts
           Product: DRI
           Version: DRI CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: liquid.acid at gmx.net


Hi there,

this is a update of bug #31046, where the main issue was GPU resets caused by
enabling tiling (R600_FORCE_TILING=1) with the r600g driver.

The situation however was changed, and now R600_FORCE_TILING only causes mipmap
rendering errors in a few application. Last time I tested ioquake3, doom3
(demo) and both ut2003 and ut2004.

ut03 and ut04 are still affected by the blocky rendering errors (see the other
bug for screenshots illustrating the problem), but both ioquake3 and doom3 now
look perfectly fine.

My hardware:
ATI Technologies Inc Radeon HD 4770 [RV740]

libdrm, mesa and xf86-video-ati are all git master tip.
ColorTiling is enabled in the xorg.conf, verified this by checking the Xorg
logfile.
kernel is d-r-t

Greets,
Tobias

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