https://github.com/web-platform-tests/wpt
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Tip revision: bf21aa6a53367f9ad69c1f8c78d66c20270bbeaf authored by Andrea Marchesini on 04 April 2018, 17:43:55 UTC
setTimeout/setInterval should silently fail if the worker is shutting down,
Tip revision: bf21aa6
2d.composite.transparent.source-out.html
<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.composite.transparent.source-out</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/canvas-tests.js"></script>

<h1>2d.composite.transparent.source-out</h1>
<p class="desc"></p>


<script>
var t = async_test("");
t.step(function() {

var offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');


ctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
ctx.fillRect(0, 0, 100, 50);
ctx.globalCompositeOperation = 'source-out';
ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(offscreenCanvas, 50,25, 0,0,255,96, "50,25", "0,0,255,96", 5);

t.done();

});
</script>
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