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hiroakioishi/wang_hasl.hlsl

Created June 2, 2020 05:28
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wang_hash ランダム
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wang_hasl.hlsl
// Wang Hash Random
#define WANG_HASH_SEED_MAX 4294967295
#define INV_WANG_HASH_DIV 2.3283064e-10
float wang_hash(uint seed)
{
seed = (seed ^ 61) ^ (seed >> 16);
seed *= 9;
seed = seed ^ (seed >> 4);
seed *= 0x27d4eb2d;
seed = seed ^ (seed >> 15);
return seed * INV_WANG_HASH_DIV;
}
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