Alex wrote:
> What implementation of Perlin noise does Povray use?
> Docs say noise_generator type 3 is Perlin noise...
> I'm asking because I stumbled on paper by Perlin (SIGGRAPH 2002 p.681),
> describing some ameliorations to the noise algorithm and I was wondering if
> these has found their way in Pov code.

The POV feature was implemented before that paper and uses the old 
algorithm, but the POV Team is aware of the improved version.

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