POV-Ray : Newsgroups : povray.binaries.images : Cornell Box Server Time
4 Nov 2024 20:15:09 EST (-0500)
  Cornell Box (Message 1 to 7 of 7)  
From: Tim Attwood
Subject: Cornell Box
Date: 19 Apr 2007 03:03:37
Message: <46271449@news.povray.org>
Dinking around with MeshLab...


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From: Kirk Andrews
Subject: Re: Cornell Box
Date: 19 Apr 2007 16:05:02
Message: <web.4627cb5c3d3ad0e143f28d40@news.povray.org>
"Tim Attwood" <tim### [at] comcastnet> wrote:
> Dinking around with MeshLab...

Just curious, but what radiosity settings are you using here?  Just recently
I was trying to make a scene using radiosity and no light sources, but it
seemed that no matter what settings I used I couldn't get it to look right
(as you have here).


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From: Tim Attwood
Subject: Re: Cornell Box
Date: 19 Apr 2007 16:17:31
Message: <4627ce5b$1@news.povray.org>
> Just curious, but what radiosity settings are you using here?  Just 
> recently
> I was trying to make a scene using radiosity and no light sources, but it
> seemed that no matter what settings I used I couldn't get it to look right
> (as you have here).

radiosity {
   brightness 1.5
   count 100
   error_bound 0.15
   gray_threshold 0.0
   low_error_factor 0.2
   minimum_reuse 0.015
   nearest_count 10
   recursion_limit 5
   adc_bailout 0.01
   max_sample 0.5
   media off
   normal off
   always_sample 1
   pretrace_start 0.08
   pretrace_end 0.01
  }

but I had an area light too.


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From: Warp
Subject: Re: Cornell Box
Date: 21 Apr 2007 07:14:57
Message: <4629f231@news.povray.org>
The radiosity settings could be much better.


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From: Nathan Kopp
Subject: Re: Cornell Box
Date: 22 Apr 2007 01:32:50
Message: <462af382$1@news.povray.org>
Tim Attwood wrote:
> Dinking around with MeshLab...
> 

FYI... If your radiosity+glass scene has dark circles (e.g. bottom of 
the rear box), try increasing your max trace level... that can sometimes 
get rid of the dark circles.

-Nathan


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From: Tim Attwood
Subject: Re: Cornell Box
Date: 22 Apr 2007 21:09:27
Message: <462c0747@news.povray.org>
>  The radiosity settings could be much better.
I saw all the artifacts, it's not really the settings,
I forgot to put an inverted sphere in for background,
so there were some infinite rays...

BTW, the bunny mesh had lots of "sparkles" since
there were way too many verts and no smooth triangles.
I tried to filter about half of them out, and re-scaled
it larger in the mesh. Some post-processing... took
about 45 mins to render for me.


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From: ScottishPig
Subject: Re: Cornell Box
Date: 24 Apr 2007 01:20:02
Message: <web.462d93403d3ad0e16802b07e0@news.povray.org>
"Tim Attwood" <tim### [at] comcastnet> wrote:
> Dinking around with MeshLab...

I was dinking around with Cornell Boxes before. Yours turned out better than
mine.


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