Margus Ramst wrote:
> 
> Nathan Kopp wrote in message <36E7016F.72E68084@Kopp.com>...
> >
> >what strange effect?
> >
> 
> The rim of the shadow gets darker, but beyond that there is a thin brighter
> "halo". Perhaps this is caused by total internal reflection or something?
> Reflective caustics were turned off in the test.
> 

Ah, yes... that strange effect.  I should have warned you all (I'll document
it eventually).  That is caused by the way photon mapping works.  I haven't
found a good way to avoid it yet... increasing the density decreases the
dark/light ring.  That edge that you see is the border between using direct
lighting and using photon-mapped lighting.

-Nathan

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