[Bug 30616] New: r600g glitching in tunnel demo

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Oct 5 02:40:27 PDT 2010


           Summary: r600g glitching in tunnel demo
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: lists at andyfurniss.entadsl.com

Running xserver 1.9,gits ddx/mesa/libdrm and d-r-t on rv790 with wait
vline/dri2 vsync disabled.

Since the mesa commit 
r600g: TODO domain management

I get quite severe 1/2 second glitches running the mesa demo tunnel, it seems
that rather than a regression this commit causes an amplification of a pre
existing, but low level issue.

The glitches do not show in most games, sauerbraten will show it.

They are worse if I have my card set to high perf.

Running latencytop + tunnel often shows nothing, but will sometimes catch a 1/2
second event in radeon_fence_wait, and more rarely 300ms in radeon_cs_ioctl.

r600c does not glitch.

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