POV-Ray : Newsgroups : povray.unofficial.patches : Megapov XRS Server v2.0.5 and pyxrsclient v0.6.7 released : Re: Megapov XRS Server v2.0.5 and pyxrsclient v0.6.7 released Server Time
23 Jun 2024 08:13:20 EDT (-0400)
  Re: Megapov XRS Server v2.0.5 and pyxrsclient v0.6.7 released  
From: Jaime Vives Piqueres
Date: 2 Sep 2006 04:41:38
Message: <44f943c2$1@news.povray.org>
Christoph Hormann wrote:
> I am pretty sure even if you can't see any differences you will be able 
> see them when actually calculating the difference between the images 
> (can't well do that with your example since it is jpg-compressed).  The 
> difference might be small in a lot of cases but with critical settings 
> it can be large enough to be visible (in the extreme case you don't do 
> any pretrace like Gilles for example did in a lot of cases).

   You are right, the stats report about 1-2% of new samples. But almost 
in all my recent scenes this leads to invisible artifacts. On the 
difference image you have to raise brightness and contrast to the 
maximum to see them. But curiously, the artifacts do not seem to 
visually have any relation with the tiles... they seem a global thing.

   In any case, I suppose this happens also when I distribute manually a 
rendering over my machines. And as I always use the two-pass radiosity 
method, the only difference for me when using XRS is that I need much 
less effort and time to obtain the same result.

--
Jaime


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