1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
<!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>
<canvas id="c-ref" width="64" height="64"></canvas>
<script>
SimpleTest.waitForExplicitFinish();
function testToDataURL() {
// testing toDataURL
// Fill c-ref with green color.
var c = document.getElementById("c-ref");
var ctx = c.getContext("2d");
ctx.rect(0, 0, 64, 64);
ctx.fillStyle = "#00FF00";
ctx.fill();
var htmlCanvas = document.getElementById("c");
ok(c.toDataURL() == htmlCanvas.toDataURL(), "toDataURL should return a 64x64 green square");
}
function runTest() {
var htmlCanvas = document.getElementById("c");
var worker = new Worker("offscreencanvas.js");
ok(htmlCanvas, "Should have HTML canvas element");
ok(worker, "Web worker successfully created");
worker.onmessage = function(evt) {
var msg = evt.data || {};
if (msg.type == "test") {
ok(msg.result, msg.name);
}
if (msg.type == "finish") {
testToDataURL();
worker.terminate();
SimpleTest.finish();
}
}
ok(htmlCanvas.transferControlToOffscreen, "HTMLCanvasElement has transferControlToOffscreen function");
var offscreenCanvas = htmlCanvas.transferControlToOffscreen();
ok(offscreenCanvas, "Expected transferControlToOffscreen to succeed");
worker.postMessage({test: 'webgl', canvas: offscreenCanvas}, [offscreenCanvas]);
}
SpecialPowers.pushPrefEnv({'set': [
['gfx.offscreencanvas.enabled', true],
['webgl.force-enabled', true],
]}, runTest);
</script>
</body>
</html>
|
