POV-Ray: Newsgroups: povray.binaries.images: Why do ISO surfaces slow down radiosity so much? - 1 attachment: Why do ISO surfaces slow down radiosity so much?

POV-Ray : Newsgroups : povray.binaries.images : Why do ISO surfaces slow down radiosity so much? - 1 attachment : Why do ISO surfaces slow down radiosity so much? - 1 attachment		Server Time 16 Aug 2024 00:23:30 EDT (-0400)

From: Rich
Date: 10 Apr 2002 20:18:55
Message: <Xns91ECBA41AA903spammindspringcom@204.213.191.226>

Or is it the other way around and radiosity slows down ISO surface
rendering?  Either way, the combination of ISO and Radiosity makes for a
really slow render.  As a test, the following scene has seven ISO rocks,
and was rendered with the following parameters: 

  496 seconds: single light, no radiosity
43724 seconds: single light, radiosity using "Normal" setting from
               rad_def.inc (over 12 hours)!! 
  885 seconds: single light, fill light at camera, no radiosity
               (attached picture) 

  I then replaced all seven ISOs with spheres, leaving the textures, etc
and got: 

 21 seconds: single light, no radiosity
206 seconds: single light, radiosity using "Normal" setting from
             rad_def.inc 

  This is orders of magnitude faster than the ISOs with radiosity, but
the ISOs without radiosity aren't that much slower than the spheres. 
Any ideas?? 

-- 
Rich Allen
(Remove SPAM from my address to reply by e-mail)

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