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<!DOCTYPE HTML>
<html>
<head>
<title>OffscreenCanvas: Test subworkers</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
</head>
<body>
<!--
We want to test offscreen canvas works well when it running on worker
and nested worker simultaneously. So we create 10 canvas and dispatch
it to different workers and sub-workers.
-->
<script>
SimpleTest.waitForExplicitFinish();
function createCanvas() {
var htmlCanvas = document.createElement('canvas');
htmlCanvas.width = 64;
htmlCanvas.height = 64;
document.body.appendChild(htmlCanvas);
return htmlCanvas.transferControlToOffscreen();
}
function runTest() {
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();
SimpleTest.finish();
}
}
var findTransferables = function(t) {
if (t.test == "subworker") {
var result = [];
t.subtests.forEach(function(test) {
result = result.concat(findTransferables(test));
});
return result;
} else {
return [t.canvas];
}
};
var testData =
{test: 'subworker', subtests: [
{test: 'webgl', canvas: createCanvas()},
{test: 'subworker', subtests: [
{test: 'webgl', canvas: createCanvas()},
{test: 'webgl_changesize', canvas: createCanvas()},
{test: 'webgl', canvas: createCanvas()}
]},
{test: 'subworker', subtests: [
{test: 'webgl', canvas: createCanvas()},
{test: 'webgl_changesize', canvas: createCanvas()},
{test: 'subworker', subtests: [
{test: 'webgl_changesize', canvas: createCanvas()},
{test: 'webgl', canvas: createCanvas()}
]},
{test: 'subworker', subtests: [
{test: 'webgl_changesize', canvas: createCanvas()},
{test: 'subworker', subtests: [
{test: 'subworker', subtests: [
{test: 'webgl_changesize', canvas: createCanvas()}
]}
]}
]},
]}
]};
worker.postMessage(testData, findTransferables(testData));
}
SpecialPowers.pushPrefEnv({'set': [
['gfx.offscreencanvas.enabled', true],
['webgl.force-enabled', true],
]}, runTest);
</script>
</body>
</html>
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