POV-Ray : Newsgroups : povray.beta-test : network rendering : Re: network rendering Server Time
7 Jul 2024 07:00:35 EDT (-0400)
  Re: network rendering  
From: clipka
Date: 4 Aug 2009 23:49:59
Message: <4a790167$1@news.povray.org>
Mr schrieb:
> What's the way to do network rendering with the beta version of pov?
> Does SMPOV work with it? Does the new built-in SMP implementation support this
> out of the box? Or do you set up computer grids? (I'm searching for anything
> that
> could speed up my render times besides what's said in FAQ and documentation

Given how SMPov works, it should be compatible with POV-Ray 3.7 as well. 
However, there are a caveats when using it with sophisticated lighting 
like photons and radiosity (though I assume these to have been present 
in POV-Ray 3.6 as well): Out of the box, render nodes will do duplicate 
work for both photons and radiosity (the latter applies especially to 
shots with a high recursion depth, but also when using a lot of 
reflection), and what's even worse, edges of the SMPov tiles are likely 
to show up as artifacts in the assembled shot when using radiosity.

Other attempts use multiple full renders of slightly different scenes 
for anti-aliasing and focal blur (slightly different camera parameters), 
smooth shadows (slightly different light source positions), blurred 
reflections (slightly differently pertubed surface normals) and the 
like. This approach is actually said to be quite efficient when a heavy 
combination of all of these is used, and AFAIK wasn't even invented with 
network rendering in mind, but just to avoid an explosion of render 
time. By varying photon, radiosity and media sampling parameters, a good 
deal of jitter can probably be introduced to these as well, so that they 
can get away with significantly lower quality settings, too.


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