Roland Mas wrote in message ...
>
>Yes, sure.  But it would anyway imply a huge lot of calculations,
>because the ray is bent all along its path and not just on a few
>points of it.  Which means: a *big* number of samples.  Each of them
>needing to calculate a ior local gradient.  Sloooow.
>


Well, "slooooooowwww" would be one of the first words I'd use to describe
raytracing in general :)

Margus

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