POV-Ray : Newsgroups : povray.general : idea to speed up radiosity in some cases : Re: idea to speed up radiosity in some cases Server Time
1 Aug 2024 04:10:25 EDT (-0400)
  Re: idea to speed up radiosity in some cases  
From: Alain
Date: 12 Apr 2006 21:24:51
Message: <443da863$1@news.povray.org>
Zeger Knaepen nous apporta ses lumieres en ce 12/04/2006 18:53:
> I was playing with radiosity, because it's fun :), and suddenly I thought of
something: radiosity-effects are added to the current color of the pixel, radiosity
can never make a pixel darker than it would be without radiosity.  So if you're not
rendering to a HDRI, and if clipping is done before anti-aliasing (which, I know,
isn't at the moment), POV-Ray could actually stop doing it's radiosity-calculations
once a pixel has become completely white (or has become "close enough" to completely
white).
> 
> Ok, a lot of if's there, but especially for test-renders, those if's shouldn't be
too much of a problem, should they?
> 
> just an idea of course, and quite possibly not worth even taking the time to
consider implementing, given that it could only help in very few cases, but still,
maybe worth considering to be considered? :p
> 
> cu!
What about some negative pigment? or negative ambient? Those can darken your
surrounding pixels.
Also, if you have a recursion_limit of more than 1, pixels whiter than white will
illuminate the 
surrounding area more than those that are "only" white.

-- 
Alain
-------------------------------------------------
I love you not because of who you are, but because
of who I am when I am with you..


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