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Random Gradients for Perlin Noise


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#1 StasB   Members   -  Reputation: 144

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Posted 29 January 2013 - 03:00 PM

Hi! My question is pretty simple: What are some good ways to generate random N-dimensional gradients for Perlin noise?



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#2 samoth   Crossbones+   -  Reputation: 5037

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Posted 30 January 2013 - 06:16 AM

Something purely algorithmic like mod289 is usually good enough for Perlin noise if you can't (or don't want to) afford a lookup texture.

A lookup texture can represent N dimensions by atlassing, see chapter 2.1 of Shader X7.






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