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Valentin KleinandClaude Opus 5.5
614d06892c
The Elliptical Marquee tested and wrote every pixel one at a time (Surface::write_pixel), single-threaded, with no shared full tiles. The add/subtract/intersect modes read both selections over the whole canvas into f32 buffers. On 6000x4000 an ellipse took ~0.6-1.1 s and a mode combination ~0.3-0.5 s. ellipse_surface builds the shape per row: a run of fully selected pixels (bounded analytically, checked with the exact f32 tests at both ends) and edge pixels that get the original per-pixel coverage test. Tiles are built in parallel, and fully selected tiles share one tile. combine_surfaces maps two GRAY8 selections tile by tile through a 256x256 byte table, sharing tiles that come through unchanged. Both produce exactly the old bytes (equivalence test against the old per-pixel code). Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
46 lines
2.4 KiB
Rust
46 lines
2.4 KiB
Rust
//! End-to-end timing of `select.rect` (rectangular and elliptical marquee) on a 6000×4000
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//! document. `cargo run --release -p photocraft-engine --example bench_marquee [reps]`
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use std::time::{Duration, Instant};
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use photocraft_engine::Session;
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use serde_json::{Value, json};
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fn main() {
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let reps: usize = std::env::args().nth(1).and_then(|v| v.parse().ok()).unwrap_or(5);
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let mut s = Session::new();
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s.execute("file.new", json!({"width": 6000, "height": 4000})).unwrap();
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let base = json!({"x": 1000, "y": 500, "width": 3000, "height": 2000});
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let rect = |x: i32, y: i32, w: i32, h: i32, extra: Value| {
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let mut p = json!({"x": x, "y": y, "width": w, "height": h});
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if let (Some(m), Some(e)) = (p.as_object_mut(), extra.as_object()) {
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m.extend(e.clone());
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}
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p
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};
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let cases: Vec<(&str, Option<Value>, Value)> = vec![
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("rect replace 5800x3800", None, rect(100, 100, 5800, 3800, json!({}))),
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("ellipse replace 5800x3800 aa", None, rect(100, 100, 5800, 3800, json!({"ellipse": true}))),
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("ellipse replace 5800x3800 no aa", None, rect(100, 100, 5800, 3800, json!({"ellipse": true, "antiAlias": false}))),
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("ellipse replace 1000x800 aa", None, rect(2000, 1500, 1000, 800, json!({"ellipse": true}))),
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("ellipse off-canvas 8000x6000 aa", None, rect(-1000, -1000, 8000, 6000, json!({"ellipse": true}))),
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("ellipse feather 20", None, rect(100, 100, 5800, 3800, json!({"ellipse": true, "feather": 20}))),
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("rect add", Some(base.clone()), rect(2500, 1500, 3000, 2000, json!({"mode": "add"}))),
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("ellipse add", Some(base.clone()), rect(2500, 1500, 3000, 2000, json!({"ellipse": true, "mode": "add"}))),
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("ellipse subtract", Some(base.clone()), rect(2500, 1500, 3000, 2000, json!({"ellipse": true, "mode": "subtract"}))),
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("ellipse intersect", Some(base.clone()), rect(2500, 1500, 3000, 2000, json!({"ellipse": true, "mode": "intersect"}))),
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];
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for (label, pre, p) in cases {
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let mut best = Duration::MAX;
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for _ in 0..reps {
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s.execute("select.deselect", json!({})).ok();
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if let Some(pre) = &pre {
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s.execute("select.rect", pre.clone()).unwrap();
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}
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let t = Instant::now();
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s.execute("select.rect", p.clone()).unwrap();
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best = best.min(t.elapsed());
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}
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println!("{label:34} best of {reps}: {best:.2?}");
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}
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}
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