[vtkusers] Update: White image with dri volume rendering

[Lisa S. Avila]

Hi Larry,

Keep in mind that the ray caster puts a texture up to represent the 
generated image - so texture mapping is used in the ray caster as well as 
the volume texture mapper.

What version of VTK are you running? Have you tried other texturing 
examples? For example, run something with a vtkImageActor.

Lisa


At 03:41 PM 11/25/2002, l.a.h.j.d.graaf at tue.nl wrote:
>For you who are curious,
>When running volSimpleLOD.tcl the same symptoms appear namely a white
>image with levels 1 and 2 of the lodProp3D. These are  raycast mappers.
>So it seems nothing to do with textures. What is correct in respect of
>the mesa textures demo's who are running correctly.
>It remains a mystery to me...
>By the way I use a G400Max.
>
>Larry
>
>
>***** previous mail ****************************************
>Dear vtkusers,
>
>When using vtkOpenGLVolumeTextureMapper2D to render a volume I get a
>white image with DRI enabled. Without DRI the image is correct although
>very slow.
>The Mesa opengl demos do work with DRI enabled. So it looks like a
>problem with the texture mapper.
>I've read several messages about problems with texture mapping and DRI
>but none with the same problem.
>
>Anyone some suggestions ?
>
>I'm using vtk 4.0 (or 4.1 I don't know how to check that)
>xserver-xfree86 4.1.0-16, kernel 2.4.18, debian woody, mga.o and
>mga_dri.so from Matrox.
>
>
>Thanks,
>
>
>Larry
>
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