Jan Walzer wrote:
> 
> <experiment>
[snip]
> </experiment>
> 

Yes, something like this has been suggested and it might work.
My point was that it would require a rewrite of the volume sampling method.
Probably a large one. If you (or anyone else) is willing to try implementing it,
I wish you nothing but the best of luck.
But personally, I think it's not worth the trouble, at least until the average
computer gets considerably faster. Currently, even scattering media has to be
used sparingly. Variable IOR _will_ be worse.

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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