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render: make damage visualizer slightly less inefficient

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This commit is contained in:
Julian Orth 2025-07-27 15:00:09 +02:00
parent 225dda8e5b
commit e12ececca4
9 changed files with 30 additions and 19 deletions
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6
src/damage.rs
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@ -160,7 +160,7 @@ impl DamageVisualizer {
let entries = &*self.entries.borrow();
let decay = self.decay.get();
let base_color = self.color.get();
let mut used = Region::empty();
let mut used = Region::default();
let dx = -cursor_rect.x1();
let dy = -cursor_rect.y1();
let decay_millis = decay.as_millis() as u64 as f32;
@ -168,12 +168,12 @@ impl DamageVisualizer {
let srgb = &self.color_manager.srgb_srgb().linear;
for entry in entries.iter().rev() {
let region = Region::new(entry.rect);
let region = region.subtract(&used);
let region = region.subtract_cow(&used);
if region.is_not_empty() {
let age = (now - entry.time).as_millis() as u64 as f32 / decay_millis;
let color = base_color * (1.0 - age);
renderer.fill_boxes2(region.rects(), &color, srgb, dx, dy);
used = used.union(&region);
used = used.union_cow(&region).into_owned();
}
}
}