Invisible escreveu:
> nemesis wrote:
> 
>> and no, you don't need days to get grainless result anymore than what 
>> you would need with povray and area lights and radiosity.
> 
> Er, no, POV-Ray uses an utterly different algorithm for this. In 
> particular, it uses a shedload of statistical tests to reduce the number 
> of samples taken.

Povray still shows a lot of graininess for insuficient samples.  Lots of 
samples still get very slow rendering.

> *This* program just endlessly resamples everything 
> until all the randomness averages out; this is orders of magnitude slower.

But that's for a pure simple path tracer.  There are far smarter 
samplers out there, most notably Metropolis Light Transport, that are 
able to converge the image much faster.

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