[vtkusers] Re: [Mesa3d-users] Mesa/VTK problem on RedHat 7.2 (also with Mesa 4.0)

[Brian Paul]

Dave Reed wrote:
> 
> When I moved from RedHat 7.1 to RedHat 7.2, I started getting missing
> polygons in simple VTK examples (using vtk3.2). It was suggested that
> I try Mesa 4.0 so I did, but the same thing still happens. I also
> tried VTK 4.0, but the same thing still happens. I completely removed
> the libGL and libGLU files that came with RedHat 7.2, installed
> Mesa-4.0, compiled VTK 4.0 and it still happens.
> 
> http://capital2.capital.edu/faculty/dreed/medical1.jpg
> 
> shows an example - there are polygons missing just under the nose.
> 
> The same program works fine (no missing polygons) with NVidia's
> drivers with a TNT2 card. So either it's a bug in Mesa or some strange
> interaction between VTK and Mesa. I suspect it's a bug in Mesa, but
> I'm not certain.
> 
> The program is basically the medical1.cxx file from one of the
> examples directories in vtk 3.2.
> 
> Can anyone else running RedHat 7.2 confirm this behavior (it worked
> fine on 7.1).
> 
> I also tried a small GLUT program and Mesa4.0 appears to have bugs
> that Mesa 3.4 does not. See the images:
> 
> http://capital2.capital.edu/faculty/dreed/mesa3.4.jpg
> http://capital2.capital.edu/faculty/dreed/mesa4.0.jpg
> 
> Note that the cone is missing polygons near the top in the 4.0
> example.
> 
> I can provide code for any of these if anyone wants it.

If you send me the code for small GLUT program I'll take a look.
Do you have the MESA_DEBUG env var set?

-Brian

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