Nathan Vegdahl
f13ffac7bd
It was a worthwhile experiment, but for it to really work it needs a really proper luma-chroma separation, which is both slower than I really want, and requires knowing the colorspace being used. I might make another go at this based on the TIFF LogLUV color format, requiring XYZ as input.
61 lines
1.5 KiB
Rust
61 lines
1.5 KiB
Rust
use bencher::{benchmark_group, benchmark_main, black_box, Bencher};
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use rand::{rngs::SmallRng, FromEntropy, Rng};
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use trifloat::{signed48, unsigned32};
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//----
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fn unsigned32_encode_100_values(bench: &mut Bencher) {
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let mut rng = SmallRng::from_entropy();
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bench.iter(|| {
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let x = rng.gen::<f32>();
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let y = rng.gen::<f32>();
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let z = rng.gen::<f32>();
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for _ in 0..100 {
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black_box(unsigned32::encode(black_box((x, y, z))));
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}
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});
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}
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fn unsigned32_decode_100_values(bench: &mut Bencher) {
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let mut rng = SmallRng::from_entropy();
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bench.iter(|| {
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let v = rng.gen::<u32>();
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for _ in 0..100 {
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black_box(unsigned32::decode(black_box(v)));
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}
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});
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}
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fn signed48_encode_100_values(bench: &mut Bencher) {
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let mut rng = SmallRng::from_entropy();
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bench.iter(|| {
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let x = rng.gen::<f32>() - 0.5;
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let y = rng.gen::<f32>() - 0.5;
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let z = rng.gen::<f32>() - 0.5;
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for _ in 0..100 {
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black_box(signed48::encode(black_box((x, y, z))));
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}
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});
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}
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fn signed48_decode_100_values(bench: &mut Bencher) {
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let mut rng = SmallRng::from_entropy();
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bench.iter(|| {
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let v = rng.gen::<u64>() & 0x0000_FFFF_FFFF_FFFF;
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for _ in 0..100 {
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black_box(signed48::decode(black_box(v)));
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}
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});
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}
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//----
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benchmark_group!(
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benches,
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unsigned32_encode_100_values,
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unsigned32_decode_100_values,
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signed48_encode_100_values,
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signed48_decode_100_values,
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);
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benchmark_main!(benches);
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