NumbC nous apporta ses lumieres en ce 2005-08-26 05:33:
> Hi all,
> 
> Here's my second image. It's basic, simple stuff to most of you probably;
> four colored glass spheres. Nothing you all haven't seen before. But for
> me it was an exercise and study in the following:
> 
> - photons
> - refraction/reflection
> - soft shadows
> - fog
> 
> I would like to thank Mike Williams, St and Marc Jacquier for responding so
> quickly to my earlier questions and ofcourse to all of you contributing to
> the POV-Ray newsgroups. I still have a lot to learn and read, but it's all
> been fun so far :)
> 
> BTW, anyone knows how I can get a better softer shadow. I think it's too
> pixelated.
> 
> Have a fine day,
> NumbC
> 
> 
> 
> ------------------------------------------------------------------------
> 
To get softer shadows: increase the density of the area_light and use adaptive 0
(increase if you 
get artefacts)
When using adaptive, the best values are powers of 2 + 1. This is due to the adaptive
subdivision 
that try to split the intervals in 2 when needed.
I comonly use 17*17 and 33*33 and you can easily go higher (65*65, 129*129, 257*257).
When using 
high values, jitter become more and more useless.
The 4*4 default give you heavy banding and require jitter to get anything acceptable.

Alain

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