[vtkusers] Mangled Mesa Volume Rendering

[Kevin H. Hobbs]

I've slowly been isolating my problem with making a volume rendered
movie offscreen on our MPI cluster.

I'm using VTK from CVS.

The mangled Mesa I've been using most is version 6.4.2.

The example VTK/Examples/MangledMesa/Tcl/OffScreenCone.tcl works but the
attached code, based off of it and
VTK/Examples/VolumeRendering/Tcl/IntermixedUnstructuredGrid.tcl, does
not work. I just get a black image.

An added annoyance is that when I build VTK with mangled mesa regular
rendering segfaults.
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