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possible bug: multiple volumes

Post here general questions about usage of YafaRay and about the Blender Exporter UI

possible bug: multiple volumes

Post Mon Aug 03, 2009 3:35 am

I was playing with the volume renderer today and I found out that if you render multiple volumes they get darker and darker as more are added. In the scene shown below I am not changing anything but the number of identical cubes.
1volume.png
1volume.png (5.17 KiB) Viewed 7334 times
2volumes.png
2volumes.png (7.71 KiB) Viewed 7334 times
3volumes.png
3volumes.png (10.14 KiB) Viewed 7334 times


Does anyone know if this should happen and why?
loh
 
Posts: 250
Joined: Sat Sep 20, 2008 3:22 am

Re: possible bug: multiple volumes

Post Mon Aug 03, 2009 4:54 pm

I'm not positive, but I think that as the total volume from volumetric regions in a scene increases, the volumetric density decreases in all the volume regions. That's why the cubes appear to get darker, the volumes are less dense and so more of the black background shows through.

I just don't know why it happens or if it should. I guess Bert can give more information on this.
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wizofboz
 
Posts: 235
Joined: Tue Sep 16, 2008 7:00 pm

Re: possible bug: multiple volumes

Post Mon Aug 03, 2009 8:38 pm

I can think of why this is happening and I'll check it out soon. It's very likely a bug. ;)
bert_b
 
Posts: 265
Joined: Sun Mar 23, 2008 11:31 pm

Re: possible bug: multiple volumes

Post Wed Jan 19, 2011 9:32 pm

Sorry for digging up such an old thread but I am experiencing the same issue in 0.1.1. Is there any news on this bug?
ChrisX
 
Posts: 61
Joined: Mon Jan 03, 2011 10:08 pm

Re: possible bug: multiple volumes

Post Thu Oct 15, 2015 4:25 am

Hello,

This issue is fixed in YafaRay-E (Experimental) v1.0.0

See bug report here: http://www.yafaray.org/node/332
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David Bluecame
 
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Location: Spain


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