You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.5 KiB
63 lines
1.5 KiB
3 years ago
|
<!-- Licensed under a BSD license. See license.html for license -->
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
|
||
|
|
<title>Three.js - OffscreenCanvas</title>
|
||
|
|
<style>
|
||
|
|
html, body {
|
||
|
|
height: 100%;
|
||
|
|
margin: 0;
|
||
|
|
}
|
||
|
|
#c {
|
||
|
|
width: 100%;
|
||
|
|
height: 100%;
|
||
|
|
display: block;
|
||
|
|
}
|
||
|
|
#noOffscreenCanvas {
|
||
|
|
display: flex;
|
||
|
|
width: 100%;
|
||
|
|
height: 100%;
|
||
|
|
align-items: center;
|
||
|
|
justify-content: center;
|
||
|
|
background: red;
|
||
|
|
color: white;
|
||
|
|
}
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<canvas id="c"></canvas>
|
||
|
|
<div id="noOffscreenCanvas" style="display:none;">
|
||
|
|
<div>no OffscreenCanvas support</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
<script type="module">
|
||
|
|
function main() { /* eslint consistent-return: 0 */
|
||
|
|
const canvas = document.querySelector('#c');
|
||
|
|
if (!canvas.transferControlToOffscreen) {
|
||
|
|
canvas.style.display = 'none';
|
||
|
|
document.querySelector('#noOffscreenCanvas').style.display = '';
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
const offscreen = canvas.transferControlToOffscreen();
|
||
|
|
const worker = new Worker('offscreencanvas-cubes.js', {type: 'module'});
|
||
|
|
worker.postMessage({type: 'main', canvas: offscreen}, [offscreen]);
|
||
|
|
|
||
|
|
function sendSize() {
|
||
|
|
worker.postMessage({
|
||
|
|
type: 'size',
|
||
|
|
width: canvas.clientWidth,
|
||
|
|
height: canvas.clientHeight,
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
window.addEventListener('resize', sendSize);
|
||
|
|
sendSize();
|
||
|
|
}
|
||
|
|
main();
|
||
|
|
|
||
|
|
</script>
|
||
|
|
</html>
|
||
|
|
|