Re: Occulsion Culling

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Eric A. Brittain (ericb++at++immersive.lcs.mit.edu)
Tue, 25 Jun 1996 09:58:51 -0400 (EDT)

I would like to propose another alternative to occulsion culling.
Since we can't get to the primitive level of culling in Performer,
could we constantly change the geometry of a geoset?

For example, suppose I have an indexed set of quads.
What if I determine all visible polygons and rearrange the index array
to reflect only the visible polygons (assuming the primitive is one color and
non textured)? I would also change the primitive count to reflect the
number of primitives in the geoset. Would this approach work?

Would there be a performance loss to changing the geoset?

Eric

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