Re: Transparency and Lighting? Don't work together?
Angus Dorbie (dorbie++at++multipass.engr.sgi.com)
Wed, 6 Aug 1997 16:07:06 -0700
On Aug 5, 8:48pm, Rodney Hoinkes wrote:
> Subject: Transparency and Lighting? Don't work together?
> Hello all,
>
> We are having a problem that it is likely others have as well and are
> seeking advice from the wise.
>
> We have a custom pf loader for our data. Some nodes within it are solid
> (no alpha) and some are alpha'd. When I setup the modes with
> pfdBldrStateMode and turn PFSTATE_TRANSPARENCY ON, the objects only show
> transparency when the 'sun' is OFF (not EYE or SUN in perfly).
>
> Now I can live without lighting (if I must) on alpha'd objects so I also
> added PFSTATE_ENLIGHTING to OFF on transparent nodes. This generally
> works except that I occasionally get lighting flashes across the model
> while fly around it (lighting on the whole model - or big parts of it
> turn on or off briefly). These flashes are unacceptable as are solid
> nodes that should be alpha.
>
> Someone else MUST have encountered this situation before. Advice would
> be helpful as our deadline approaches for public display and my heart is
> beatting faster. Any thoughts/suggestions/solutions?
>
> PS. Running Perf 2.2 beta on Onyx2 IR 6.4.1 IRIX.
>
>
Try a more recent beta.
Cheers,Angus.
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on Mon Aug 10 1998 - 17:55:42 PDT