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62 lines
1.5 KiB
62 lines
1.5 KiB
<!-- Licensed under a BSD license. See license.html for license -->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>Three.js - OffscreenCanvas</title>
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<style>
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html, body {
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height: 100%;
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margin: 0;
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}
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#c {
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width: 100%;
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height: 100%;
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display: block;
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}
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#noOffscreenCanvas {
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display: flex;
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width: 100%;
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height: 100%;
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align-items: center;
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justify-content: center;
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background: red;
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color: white;
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}
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</style>
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</head>
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<body>
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<canvas id="c"></canvas>
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<div id="noOffscreenCanvas" style="display:none;">
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<div>no OffscreenCanvas support</div>
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</div>
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</body>
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<script type="module">
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function main() { /* eslint consistent-return: 0 */
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const canvas = document.querySelector('#c');
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if (!canvas.transferControlToOffscreen) {
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canvas.style.display = 'none';
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document.querySelector('#noOffscreenCanvas').style.display = '';
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return;
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}
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const offscreen = canvas.transferControlToOffscreen();
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const worker = new Worker('offscreencanvas-cubes.js', {type: 'module'});
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worker.postMessage({type: 'main', canvas: offscreen}, [offscreen]);
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function sendSize() {
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worker.postMessage({
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type: 'size',
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width: canvas.clientWidth,
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height: canvas.clientHeight,
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});
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}
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window.addEventListener('resize', sendSize);
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sendSize();
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}
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main();
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</script>
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</html>
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