[Mesa-dev] VTK Offscreen Segfaults

[Kevin H. Hobbs]

I'm looking into some segfaults in VTK's Offscreen tests.

These failures appeared about the time that I switched from building
mesa with the "make linux-x86-64" target and moved to buiulding mesa with :

 ./autogen.sh \
  --with-driver=xlib \
  --disable-gallium \
  --without-demos
make

It was also at this time that libOSMesa went from being linked against
libGL to being linked to mesa internal static libraries.

I build VTK and mesa from their development repositories every night.

This is what gdb has to say after the segfault.

#0  vbo_exec_EvalCoord1fv (u=0x203) at vbo/vbo_exec_api.c:458
#1  0x00007ffff7b3263d in vtkOpenGLRenderWindow::OpenGLInit (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkOpenGLRenderWindow.cxx:241
#2  0x00007ffff7b8c45e in vtkXOpenGLRenderWindow::CreateOffScreenWindow
(this=0x69d310, width=300, height=300)
    at /home/kevin/kitware/VTK/Rendering/vtkXOpenGLRenderWindow.cxx:951
#3  0x00007ffff7b8c8dd in vtkXOpenGLRenderWindow::Initialize (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkXOpenGLRenderWindow.cxx:1066
#4  0x00007ffff7b8cce3 in vtkXOpenGLRenderWindow::Start (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkXOpenGLRenderWindow.cxx:1185
#5  0x00007ffff7a54fc1 in vtkRenderWindow::DoStereoRender (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkRenderWindow.cxx:687
#6  0x00007ffff7a54f92 in vtkRenderWindow::DoFDRender (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkRenderWindow.cxx:676
#7  0x00007ffff7a54992 in vtkRenderWindow::DoAARender (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkRenderWindow.cxx:563
#8  0x00007ffff7a53da2 in vtkRenderWindow::Render (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkRenderWindow.cxx:376
#9  0x00007ffff7b8f743 in vtkXOpenGLRenderWindow::Render (this=0x69d310)
    at /home/kevin/kitware/VTK/Rendering/vtkXOpenGLRenderWindow.cxx:1845
#10 0x0000000000432696 in TestOSConeCxx (argc=7, argv=0x7fffffffd960)
    at /home/kevin/kitware/VTK/Rendering/Testing/Cxx/TestOSConeCxx.cxx:68
#11 0x000000000041b683 in main (ac=7, av=0x7fffffffd960)
    at
/home/kevin/kitware/VTK_Build/Rendering/Testing/Cxx/RenderingCxxTests.cxx:454


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