Re: ClearCoat

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Angus Dorbie (dorbie++at++sgi.com)
Fri, 20 Nov 1998 09:24:48 -0800

Laurent Ach wrote:
>
> Jenny Zhao wrote:
>
> > For a good description what ClearCoat is (including a nifty applet showing
> > the differences with other techniques):
> >
> > http://www.sgi.com/software/optimizer/overview.html#clearcoat
> >
>
> I could not find any technical information about ClearCoat at this address. Is
> ClearCoat something better than a very simple two-pass rendering ?
>
> And RealityMapping ? is it something more than some demos already seen, using
> multi-pass algorithms with OpenGL or Performer for reflecting properly the
> environment.

As Brian already explained Clear Coat is not just simple two pass
rendering.
Reality mapping is not multipass environment mapping. It can support
singe pass world space environment mapping for constrained cases which
are particularly interesting to automobile designers, it also solves
some
tricky texture filtering issues to give these designers the kind of
quality
they need.

SGI won't be disclosing the technical details of how these features
are implemented.

Cheers,Angus.

-- 
"Only the mediocre are always at their best." -- Jean Giraudoux 


For advanced 3D graphics Performer + OpenGL based examples and tutors:
http://www.dorbie.com/

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