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Improvement for sampling at low sample counts.

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This commit is contained in:
Nathan Vegdahl 2020-04-17 11:04:33 +09:00
parent c4e1bedd43
commit b74a58cb72
1 changed files with 3 additions and 1 deletions
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4
src/renderer.rs
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@ -701,7 +701,9 @@ fn get_sample(dimension: u32, i: u32, pixel_co: (u32, u32), seed: u32) -> f32 {
match dimension {
d if d < sobol::MAX_DIMENSION as u32 => {
// Sobol sampling.
sobol::sample_owen(d, i, hash_u32(d, scramble))
// We skip the first 4 samples, because that mitigates some poor
// sampling at low sample counts like 16.
sobol::sample_owen(d, i + 4, hash_u32(d, scramble))
}
d => {
// Random sampling.