There are three noise generators implemented.
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noise_generator 1 the noise that was used in POV_Ray 3.1
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noise_generator 2 'range corrected' version of the old noise, it does not show the plateaus seen
with noise_generator 1
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noise_generator 3 generates Perlin noise
The default is noise_generator 2
Note: The noise_generators can also be used within the pigment/normal/etc. statement.
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