From: Angus Dorbie (dorbie++at++sgi.com)
Date: 05/18/2000 20:34:26
It sounds like you have some issue with depth occlusion & transparency.
The description doesn't make it clear. The transparent section should
remain transparent and should fog correctly as it fades & vannishes.
Perhaps you need to use pfAlphaFunc or the equivalent state to make this
work.
Cheers,Angus.
ken sartor wrote:
>
> pfHi -
>
> How does one cause fog to affect the texture on a biilboard, but not the
> polygon it is attached to? For instance, in billboarded trees i notice
> that the visible part of the tree is fogged, but the tranparent portion of
> the polygon is not.
>
> pfTIA.
>
> ken
-- For Performer+OpenGL tutorials http://www.dorbie.com/"In the middle of difficulty lies opportunity." --Albert Einstein
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