https://github.com/web-platform-tests/wpt
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Tip revision: 88ec1d7c1367d0facdb961f675489bf32d7df7b9 authored by Robert Ma on 16 March 2018, 17:56:06 UTC
Mute wget when downloading chrome deb
Tip revision: 88ec1d7
2d.composite.transparent.copy.html
<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.composite.transparent.copy</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/canvas-tests.js"></script>

<h1>2d.composite.transparent.copy</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 = 'copy';
ctx.fillStyle = 'rgba(0, 0, 255, 0.75)';
ctx.fillRect(0, 0, 100, 50);
_assertPixelApprox(offscreenCanvas, 50,25, 0,0,255,191, "50,25", "0,0,255,191", 5);

t.done();

});
</script>
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