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A comment on Understanding Perlin Noise (2014). Parent comment
> in 2001 he was granted a patent for the use of 3D+ implementations of simplex noise for texture synthesis.
OpenSimplex is a variant of simplex noise developed specifically to work around that patent.
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> in 2001 he was granted a patent for the use of 3D+ implementations of simplex noise for texture synthesis.
OpenSimplex is a variant of simplex noise developed specifically to work around that patent.