POV-Ray : Newsgroups : povray.advanced-users : Black spots in PR 3.6 radiosity : Re: Black spots in PR 3.6 radiosity Server Time
28 Jul 2024 16:20:56 EDT (-0400)
  Re: Black spots in PR 3.6 radiosity  
From: Christoph Hormann
Date: 15 Sep 2004 12:00:02
Message: <ci9onl$j52$1@chho.imagico.de>
Gilles Tran wrote:
> 
>>      reflection { .05 falloff 1 exponent 1 }
> 
> 
> Could you try to remove the reflection statement (particularly the exponent)
> to see if it works. It solved a vaguely similar problem for another user
> (see the last messages in povray.beta-test.binaries). I came upon the
> black-dots-in-radiosity-scene-issue myself (though I solved it eventually by
> using another object as I was a little bit in a hurry...).

Note the exponent is 1 which is default.  The bug report you cited had 
trouble with non-default just like the scene using crand Bob Hughes 
showed some time ago.  Apparently the changes made to prevent those 
problems did not completely slove it, the code applying the exponent 
should always check for the argument being below zero.  But i have never 
seen the same problem with exponent 1 (and if you have a scene showing 
this please post it).

Christoph

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