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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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47
dom/canvas/test/test_offscreencanvas_sharedworker.html Normal file
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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>
<canvas id="c" width="64" height="64"></canvas>
<script>
SimpleTest.waitForExplicitFinish();
function runTest() {
var htmlCanvas = document.getElementById("c");
var worker = new SharedWorker("offscreencanvas.js");
ok(htmlCanvas, "Should have HTML canvas element");
ok(worker, "Web worker successfully created");
ok(htmlCanvas.transferControlToOffscreen, "HTMLCanvasElement has transferControlToOffscreen function");
var offscreenCanvas = htmlCanvas.transferControlToOffscreen();
ok(offscreenCanvas, "Expected transferControlToOffscreen to succeed");
worker.port.start();
// We don't support transferring OffscreenCanvas via shared worker.
SimpleTest.doesThrow(
function() {
worker.port.postMessage({test: 'webgl', canvas: offscreenCanvas}, [offscreenCanvas]);
},
"OffscreenCanvas cannot transfer to shared worker"
);
SimpleTest.finish();
}
SpecialPowers.pushPrefEnv({'set': [
['gfx.offscreencanvas.enabled', true],
['webgl.force-enabled', true],
]}, runTest);
</script>
</body>
</html>