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New permutation (much improved randomness)

master
Stefan Gustavson 2021-06-29 11:04:55 +02:00 committed by GitHub
parent 73ef55129f
commit c445960cda
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
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src/cellular2x2.glsl
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@ -20,9 +20,9 @@ vec4 mod7(vec4 x) {
return x - floor(x * (1.0 / 7.0)) * 7.0;
}
// Permutation polynomial: (34x^2 + x) mod 289
// Permutation polynomial: (34x^2 + 6x) mod 289
vec4 permute(vec4 x) {
return mod289((34.0 * x + 1.0) * x);
return mod289((34.0 * x + 6.0) * x);
}
// Cellular noise, returning F1 and F2 in a vec2.