Greg Edwards wrote:
> 
> [...]
> 
> I could easily be mistaken, but AFAIK, radiosity takes only a few samples
> for many pixels (count) to speed up the render process and when finding the
> colour for a given pixel, finds the nearest calculated samples
> (nearest_count) on the same surface and does a weighted average. This is
> kinda hard to do when there are no surfaces (3d media). If I'm wrong, just
> say so and I'll shut up. ;-)

Ah, so you don't mean there is a problem for radiosity taking into account
media but media being illuminated by diffuse light.  This is indeed not
handled in POV-Ray radiosity at the moment - it is not impossible to do
this with monte carlo radiosity though.

It all comes down to an effect quite rarely needed (since diffuse light
rarely creates a very clearly defined effect on media) and that would be
quite slow to compute.

Christoph

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