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M5: cache expanded stroke outlines across frames (pans reuse them), skip per-frame bounds for solid paints, pointer hasher for render caches (~7% less CPU per frame on the 20k bench); perf suite budgets reflect reprojection + background refresh

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Brandon Thomas
2026-10-01 09:32:43 -04:00
co-authored by Claude Opus 5.5
parent c8f157cc87
commit 2dafc7634b
3 changed files with 87 additions and 10 deletions
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apps/drawcraft-cli/src/perf.rs
+6 -3
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@@ -95,18 +95,21 @@ pub fn run(args: &[String]) -> Result<(), String> {
let mut r = Renderer::new();
let fit = Affine::scale(1.6);
r.render(&doc, 2880, 1800, fit, &opts);
rows.push(("render: fit page, 2880×1800", median_ms(5, || drop(r.render(&doc, 2880, 1800, fit, &opts))), 16.0));
// The canvas never waits for these: while panning/zooming it shows the last frame reprojected
// and re-renders in the background, so the budget is for that refresh to land quickly.
rows.push(("render: fit page, 2880×1800", median_ms(5, || drop(r.render(&doc, 2880, 1800, fit, &opts))), 100.0));
let mut dx = 0.0;
rows.push((
"render: pan frame (view moves 7 px)",
"render: background refresh after a pan",
median_ms(9, || {
dx += 7.0;
drop(r.render(&doc, 2880, 1800, Affine::translate((dx, 0.0)) * fit, &opts));
}),
16.0,
100.0,
));
let zoom = Affine::scale(6.4) * Affine::translate((-600.0, -400.0));
r.render(&doc, 2880, 1800, zoom, &opts);
// Zoomed in, culling leaves few objects: this one should fit a frame.
rows.push(("render: 400% zoom, 2880×1800", median_ms(5, || drop(r.render(&doc, 2880, 1800, zoom, &opts))), 16.0));
let mut rng = Rng(7);