bendns' repos / fimg
fast image operations
Diffstat (limited to 'benches/overlays.rs')
-rw-r--r--benches/overlays.rs65
1 files changed, 65 insertions, 0 deletions
diff --git a/benches/overlays.rs b/benches/overlays.rs
new file mode 100644
index 0000000..2236905
--- /dev/null
+++ b/benches/overlays.rs
@@ -0,0 +1,65 @@
+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);