> Maybe another idea would be a different form of adaptive sampling:
> start with no pre-fixed number of lights in the area light, but
> proceed by halving until the shadow delta is "good enough" (where the
> user chooses the "good enough" instead of the number of lights)?

I think this would be feasible but no better than the current method.
You would also have to think hard about how this affects specular
highlights.

Daniel
-- 
Now  as he walked by the sea  of Galilee,  he saw  Simon and Andrew  his
brother casting a spam into the net:  for they were phishers.  And Jesus
said unto them, Come ye after me, and I will make you to become phishers
of men.  And  straightway  they forsook  their  nets,  and followed him.

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