Transparency sorting by polygon?

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Albert Khakshour (akhaksho++at++ncsa.uiuc.edu)
Fri, 27 Feb 1998 11:12:50 -0600 (CST)

I'm trying to draw some intersecting semi-transparent
spheres using blending, and I'm having a hard time
getting it to look right. I'm setting the channel to
PF_SORT_BACK_TO_FRONT, but this just sorts by the
bounding volumes of the GeoSets in the bin. I really
need something that will sort by individual polygons.
Is there any way to do this short of putting each
polygon in its own GeoSet? What would be the performance
penalty doing it this way? Thanks for any help.

Albert

/---------------------------------------------------\
| Albert Khakshour - akhaksho++at++ncsa.uiuc.edu |
| Visual Interactive Computing Environments Group |
| National Center for Supercomputing Applications |
\---------------------------------------------------/

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