[Mesa-dev] [Bug 63469] New: OSMesa Gallium llvmpipe VTK Test Failures

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63469

          Priority: medium
            Bug ID: 63469
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: OSMesa Gallium llvmpipe VTK Test Failures
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: hobbsk at ohiou.edu
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Mesa core
           Product: Mesa

Since OSMesa switched to Gallium and defaults to the llvmpipe driver VTK's test
:

  vtkRenderingOpenGLCxx-TestTransformCoordinateUseDouble

has been failing.

This test has a page on VTK's dashboard :

 
http://open.cdash.org/testSummary.php?project=11&name=vtkRenderingOpenGLCxx-TestTransformCoordinateUseDouble&date=2013-04-12

The take home message is that the test passes in my OSMesa-9.1.1 build which
uses the Mesa Offscreen driver and fails on all of the builds that use the
llvmpipe driver.

I played around with different drivers by setting GALLIUM_DRIVER to one
llvmpipe or softpipe and used on screen and off screen builds of VTK. I set
LIBGL_ALWAYS_SOFTWARE to get one of the software drivers or left it unset to
use the nouveau driver on my on screen build. What I got was :

OSMesa-9.1.1 offscreen pass
OSMesa-git   softpipe  pass
OSMesa-git   llvmpipe  fail
  Mesa-9.1.1 softpipe  pass
  Mesa-9.1.1 nouveau   pass
  Mesa-9.1.1 llvmpipe  fail
  Mesa-git   softpipe  pass
  Mesa-git   nouveau   pass
  Mesa-git   llvmpipe  fail

which says that llvmpipe is the issue.

I did a bunch of apitraces and put them here :

http://crab-lab.zool.ohiou.edu/kevin/vtk_apitraces.tar.bz2

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