From: Brian Furtaw (brian++at++sgi.com)
Date: 07/30/2001 18:11:34
Lawrence,
"Lachman, Lawrence" wrote:
>
> I know a pfBillboard isa pfGeode in libpf, and a pfSprite isa pfObject in libpr,
> and that a pfBillboard is an implementation of a pfSprite. I am working on a
> particle system and would like to know:
>
> 1. The difference(s) between, and limitations of, a pfSprite and a pfBillboard
> 2. When it would be advantageous to use one versus the other
> 3. What is the minimum hardware requirements for any optimizations implemented
> in hardware.
Sprites (GL_SGIX_sprite) are implemented in hardware on the Infinite
Reality only. To learn more about a good implementation (although not
based on pfSprites) of a particle system go to
www.dorbie.com/billboard.html
Brian
>
> Thanks.
>
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