Bruno Cabasson nous apporta ses lumieres en ce 11/02/2006 09:21:
> Continuing the RSOCP theme (see thread started at
> <web.43eafcf196b04c3582fc96790@news.povray.org>), I rendered a radiosity
> version, with 3 spheres. Appart from wrong settings for the media sampling
> (and long render time ...), I was puzzled by the reflection of the top
> sphere on the main one: the spherical pattern of the media appears black!!
> And I also noticed that if I add a fourth sphere, no reflection occurs for
> any sphere...
> 
> Here is the render as it was when I stopped it. If someone has suggestions
> ....
> 
> (I can post the source code if necessary).
> 
>   Bruno.
> 
> 
> ------------------------------------------------------------------------
> 
You probably need to increase max_trace_level.
Make the calculations:
Enter the first media container, reflection on the sphere, exiting the container = 3
levels
Add 3 more levels for the second sphere (2 if you only encounter the container) = 6 or
5 levels total.
Add 1 more for reaching the background.
So, you need a strict minimum max_trace_level of 7, 10 if you bounce on 2 spheres and
encounter a 
third one.
Don't fear setting it to high.

-- 
Alain
-------------------------------------------------
WARNING: The consumption of alcohol may leave you wondering what the hell happened to
your bra and 
panties.

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