POV-Ray : Newsgroups : povray.binaries.images : YMPRF Server Time
18 Aug 2024 04:20:13 EDT (-0400)
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From: Xplo Eristotle
Subject: Re: YMPRF
Date: 16 Jul 2001 18:06:38
Message: <3B5365D2.CA468766@infomagic.com>
Thomas Lake wrote:
> 
> > If you have a lot of time and a ton of RAM to burn, you can try dropping
> > error-bound to some absurdly small figure (.03 or thereabouts). You'll
> > still have artifacts, but with any luck (and a bit of tweaking to find
> > the right numbers) they'll be so small that you won't be able to see them.
> 
> My experience has been that in scenes with pure radiosity lowering
> error_bound does more harm than good. Usually you get thousands of
> artefacts, like there are hundreds of light sources casting hundreds of
> shadows or something. You can't go below about 0.4 before the scene becomes
> unsaveable.

Well, yes. But as the artifacts become smaller than a pixel, they
eventually "disappear", averaged out of existence.

Like I said, you need a lot of time and a ton of RAM to burn. ^^;

-Xplo


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From: Christoph Hormann
Subject: Re: YMPRF
Date: 19 Jul 2001 11:34:40
Message: <3B56FE76.3D3EAF0@gmx.de>
Thomas Lake wrote:
> 
> Could you please explain what you mean? I've never used light groups.

I meant having a light group with one light for the cylinder to get the
photons, but turning it off for the rest of the scene.  For the syntax of
light groups see the megapov docu.

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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