[Bug 44696] New: Rendering glitch in ShaderToy Nautilus demo with Mesa 7.11 Gallium 0.4 AMD RV710

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44696

             Bug #: 44696
           Summary: Rendering glitch in ShaderToy Nautilus demo with Mesa
                    7.11 Gallium 0.4 AMD RV710
    Classification: Unclassified
           Product: Mesa
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: bjacob at mozilla.com


Created attachment 55460
  --> https://bugs.freedesktop.org/attachment.cgi?id=55460
capture of the canvas, showing the rendering bug

My setup: Ubuntu 11.10 x86_64, Mesa 7.11, Gallium 0.4 on AMD RV710.

Steps to reproduce: in Firefox (I'm on Firefox 12 / Nightly but that shouldn't
matter):

1. Go to this URL:
   http://www.iquilezles.org/apps/shadertoy/
2. in the 'Presets' drop-down, select Nautilus
3. click 'Load'

Expected result: the blueish surface should look smooth

Actual result: rendering is littered with small dark square-ish spots that move
continuously with the animation.

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