fimg/benches/overlays.rs

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Rust
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2023-09-04 20:28:27 -05:00
use criterion::{criterion_group, criterion_main, Criterion};
use fimg::*;
pub fn criterion_benchmark(bench: &mut Criterion) {
let mut group = bench.benchmark_group("overlays");
{
let mut a: Image<_, 3> = Image::alloc(64, 64);
let b = Image::<&[u8], 3>::new(
4.try_into().unwrap(),
4.try_into().unwrap(),
*&include_bytes!("3_4x4.imgbuf"),
);
group.bench_function("overlay 3x3 offset", |bench| {
bench.iter(|| unsafe {
for x in 0..16 {
for y in 0..16 {
a.as_mut().overlay_at(&b, x * 4, y * 4);
}
}
});
});
assert_eq!(a.as_ref().buffer, include_bytes!("3x3_at_out.imgbuf"));
}
{
let mut a: Image<_, 3> = Image::alloc(64, 64);
let b = Image::<&[u8], 4>::new(
4.try_into().unwrap(),
4.try_into().unwrap(),
*&include_bytes!("4_4x4.imgbuf"),
);
group.bench_function("overlay 4x3 offset", |bench| {
bench.iter(|| unsafe {
for x in 0..16 {
for y in 0..16 {
a.as_mut().overlay_at(&b, x * 4, y * 4);
}
}
});
});
assert_eq!(a.as_ref().buffer, include_bytes!("4x3_at_out.imgbuf"));
}
{
let mut a: Image<_, 4> = Image::alloc(64, 64);
let b = Image::<&[u8], 4>::new(
4.try_into().unwrap(),
4.try_into().unwrap(),
*&include_bytes!("4_4x4.imgbuf"),
);
group.bench_function("overlay 4x4 offset", |bench| {
bench.iter(|| unsafe {
for x in 0..16 {
for y in 0..16 {
a.as_mut().overlay_at(&b, x * 4, y * 4);
}
}
});
});
assert_eq!(a.as_ref().buffer, include_bytes!("4x4_at_out.imgbuf"));
}
group.finish();
}
criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);