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<!DOCTYPE HTML>
<html>
<head>
<title>WebGL in OffscreenCanvas</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
</head>
<body>
<!--
This test needs several workers run offscreen canvas simultaneously.
So we choose 8 workers, 4 of them run basic webgl drawing test and
others run size changing test.
-->
<script>
SimpleTest.waitForExplicitFinish();
function createCanvas() {
var htmlCanvas = document.createElement('canvas');
htmlCanvas.width = 64;
htmlCanvas.height = 64;
document.body.appendChild(htmlCanvas);
return htmlCanvas;
}
function runTest() {
var stillRunning = 0;
var startWorker = function(canvas, test) {
stillRunning++;
var worker = new Worker("offscreencanvas.js");
worker.onmessage = function(evt) {
var msg = evt.data || {};
if (msg.type == "test") {
ok(msg.result, msg.name);
}
if (msg.type == "finish") {
worker.terminate();
if (--stillRunning == 0)
SimpleTest.finish();
}
}
var offscreenCanvas = canvas.transferControlToOffscreen();
worker.postMessage({test, canvas: offscreenCanvas}, [offscreenCanvas]);
}
/* create 4 workers that do the regular drawing test and 4 workers
that do the size change test */
for (var i = 0; i < 4; i++) {
startWorker(createCanvas(), 'webgl');
}
for (var i = 0; i < 4; i++) {
startWorker(createCanvas(), 'webgl_changesize');
}
}
SpecialPowers.pushPrefEnv({'set': [
['gfx.offscreencanvas.enabled', true],
['webgl.force-enabled', true]
]}, runTest);
</script>
</body>
</html>
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