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				speeding up render.. (lumi polys?)
				Posted: Tue May 22, 2007 8:54 am
				by _mats_
				Hello -
I want to thank everyone in advance for the help I always had in this forum, as usual I have some more questions..    
 
 
I am wondering how can I speed up my render, right now the main issue is that long luminous poly that illuminates the backsplash, under the cabinets, its a 300% luminosity, 0% diffuse material.
I upped the luminous samples to min 600 max 1200 (less than that was beginning to come out noisy).
Is there any other way to speed it up, any setting I can tweak?
Thanks !
Matt -
 
			
					
				
				Posted: Tue May 22, 2007 8:55 am
				by _mats_
				PS : forgot to mention that I tried an area light and a linear light instead of the lumi poly but it still takes too  long to render.
Thanks !
			 
			
					
				
				Posted: Tue May 22, 2007 11:32 am
				by silverlw
				If the luminous poly is "only" 300% luminous i suggest you render it in luminosity model/indirect. It will be way faster and you might need to up the finalgather rays  to get a splotchfree image but overall it will be much faster.
			 
			
					
				
				Posted: Tue May 22, 2007 5:42 pm
				by _mats_
				Thanks Silver
I am trying that right now 
Matt -
PS : wow, MUCH faster, from 1hr to 1min 20 secs.
Guess what setting I will be using from now on?? 
Thanks Silver !
			 
			
					
				
				Posted: Tue May 22, 2007 6:02 pm
				by jure
				Yes indirect mode is much better for this kind of light because it will render light nice and smooth. It will not cast very detailed shadow though but this is not important since light is quite big compared to small items it might illuminate.
			 
			
					
				
				Posted: Wed May 23, 2007 10:15 am
				by florian
				jure wrote:Yes indirect mode is much better for this kind of light because it will render light nice and smooth. It will not cast very detailed shadow though but this is not important since light is quite big compared to small items it might illuminate.
Is that also true for the skylight procedural from Denis when rendering outdoor scenes?
Cheers, Florian
 
			
					
				
				Posted: Wed May 23, 2007 10:55 am
				by jure
				No, this only applies to surfaces (polygons) with luminosity.
			 
			
					
				
				Posted: Wed May 23, 2007 10:56 am
				by florian
				jure wrote:No, this only applies to surfaces (polygons) with luminosity.
OK, thanks.
Cheers, Florian