sampling : simplify
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2c7269fd8d
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f3acd240d6
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@ -463,11 +463,8 @@ struct blue_noise_rng {
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// blue noise in the upper bits, white noise in the lower bits
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uint64_t next64() {
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uint64_t r = rng->next64();
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uint32_t lo = (uint32_t)r;
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uint32_t h = (uint32_t)(r >> 32);
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uint32_t val = advance(h);
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uint32_t hi = (val << (32 - bit_depth)) | (h >> bit_depth);
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return ((uint64_t)hi << 32) | lo;
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uint32_t val = advance((uint32_t)r);
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return ((uint64_t)val << (64 - bit_depth)) | (r >> bit_depth);
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}
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// uniform double in [0, 1) with blue noise temporal autocorrelation
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@ -561,8 +558,8 @@ struct llama_dist_rng_lowbias32 : llama_dist_rng {
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}
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uint64_t next64() override {
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uint64_t lo = hash(position ^ ~hashed_seed); // secondary sequence using opposing seed
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uint64_t hi = next();
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uint64_t hi = hash(position ^ ~hashed_seed); // secondary sequence using opposing seed
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uint64_t lo = next();
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return (hi << 32) | lo;
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}
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