51 lines
1.5 KiB
Rust
51 lines
1.5 KiB
Rust
use criterion::{Criterion, criterion_group, criterion_main};
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use std::hint::black_box;
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use rsvg::bench_only::{
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ExclusiveImageSurface, IRect, ImageSurfaceDataExt, Pixel, SurfaceType, linearize,
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map_unpremultiplied_components_loop,
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};
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const SURFACE_SIDE: i32 = 512;
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const BOUNDS: IRect = IRect {
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x0: 64,
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y0: 32,
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x1: 448,
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y1: 480,
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};
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fn bench_srgb_linearization(c: &mut Criterion) {
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c.bench_function("srgb map_unpremultiplied_components", |b| {
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let mut surface =
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ExclusiveImageSurface::new(SURFACE_SIDE, SURFACE_SIDE, SurfaceType::LinearRgb).unwrap();
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// Fill the surface with non-zero alpha (otherwise linearization is a no-op).
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surface.modify(&mut |data, stride| {
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for y in BOUNDS.y_range() {
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for x in BOUNDS.x_range() {
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let pixel = Pixel {
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r: 0,
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g: 0,
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b: 0,
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a: 127,
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};
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data.set_pixel(stride, pixel, x as u32, y as u32);
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}
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}
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});
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let surface = surface.share().unwrap();
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let mut output_surface =
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ExclusiveImageSurface::new(SURFACE_SIDE, SURFACE_SIDE, SurfaceType::SRgb).unwrap();
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let bounds = black_box(BOUNDS);
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b.iter(|| {
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map_unpremultiplied_components_loop(&surface, &mut output_surface, bounds, linearize);
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})
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});
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}
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criterion_group!(benches, bench_srgb_linearization);
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criterion_main!(benches);
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