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fix: fix CPU issue in dot animations #42

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Merged
khaosdoctor merged 2 commits into from
May 6, 2026
Merged

fix: fix CPU issue in dot animations #42

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6be1183
fix: only draw if there's progress inside the canvas
khaosdoctor May 6, 2026
a6dd4f2
fix(BR): reduce GPU usage in dot canvas animation
khaosdoctor May 6, 2026
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14 changes: 5 additions & 9 deletions src/website/hooks/BR/canvas.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -16,12 +16,9 @@ const drawSquare = (
const size = dot.radius * 2 * scale;
const x = dot.centerX * scale - size / 2;
const y = dot.centerY * scale - size / 2;
const borderRadius = size * 0.2;

context.fillStyle = color;
context.beginPath();
context.roundRect(x, y, size, size, borderRadius);
context.fill();
context.fillRect(x, y, size, size);
};

export const draw = (
Expand Down Expand Up @@ -51,13 +48,13 @@ export const draw = (
if (result.progress > 0) {
visibleCount++;

drawSquare(context, dotState.dot, result.progress, scale);

const isStableVisible = result.visible && result.disappearAt === null;
if (isStableVisible) {
visibleIndices.push(dotIndex);
}
}

drawSquare(context, dotState.dot, result.progress, scale);
}

processRemovals(state, visibleIndices, visibleCount, elapsed);
Expand All @@ -71,9 +68,8 @@ export const updateCanvasSize = (
const rect = canvas.getBoundingClientRect();
if (rect.width === 0 || rect.height === 0) return;

const devicePixelRatio = window.devicePixelRatio || 1;
canvas.width = rect.width * devicePixelRatio;
canvas.height = rect.height * devicePixelRatio;
canvas.width = rect.width;
canvas.height = rect.height;

const context = canvas.getContext('2d');
if (context) {
Expand Down