POV-Ray : Newsgroups : povray.binaries.images : rad vs. global illumination : Re: rad vs. global illumination Server Time
17 Aug 2024 20:21:30 EDT (-0400)
  Re: rad vs. global illumination  
From: Christoph Hormann
Date: 29 Aug 2001 16:35:40
Message: <3B8D52BC.4008579A@gmx.de>
Norbert Kern wrote:
> 
> [...]
> 
> Much better, but not as good as with faked "global illumination". Render
> time was similar to the original (
> http://www.irtc.org/ftp/pub/stills/2001-06-30/warm_up.jpg ).
> 
> I think, point ligths simulating global illumination can be sometimes better
> than radiosity.
> 
> Comments?
> 

I think it's not that simple, radiosity does not only compute the
influence of diffuse light from sky but also the radiative interaction of
all objects of the scene, something that gets totally lost with shadowless
lights.

Your rad settings seem to use default error_bound of 1.8 which is fairly
high, lowering it could help to bring more structure in the shadowed parts
of the scene.

And of course the finishes probably need to be adapted to the different
illumination for optimal results.

NTL it's nice to finally see this scene with radiosity.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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