third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/drawing-images-to-the-canvas/2d.drawImage.alpha.html - Issue 2547023002: Import wpt@3c8896ae408c8fd594979da7c99970029e7856a7

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Side by Side Diff: third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/drawing-images-to-the-canvas/2d.drawImage.alpha.html

Issue 2547023002: Import wpt@3c8896ae408c8fd594979da7c99970029e7856a7 (Closed)

Patch Set: Modify TestExpectations or download new baselines for tests. Created 4 years ago

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	1 <!DOCTYPE html>

	2 <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->

	3 <title>OffscreenCanvas test: 2d.drawImage.alpha</title>

	4 <script src="/resources/testharness.js"></script>

	5 <script src="/resources/testharnessreport.js"></script>

	6 <script src="/common/canvas-tests.js"></script>

	7

	8 <h1>2d.drawImage.alpha</h1>

	9 <p class="desc"></p>

	10

	11

	12 <script>

	13 var t = async_test("");

	14 t.step(function() {

	15

	16 var offscreenCanvas = new OffscreenCanvas(100, 50);

	17 var ctx = offscreenCanvas.getContext('2d');

	18

	19 ctx.fillStyle = '#0f0';

	20 ctx.fillRect(0, 0, 100, 50);

	21 ctx.globalAlpha = 0;

	22 var promise = new Promise(function(resolve, reject) {

	23 var xhr = new XMLHttpRequest();

	24 xhr.open("GET", '/images/red.png');

	25 xhr.responseType = 'blob';

	26 xhr.send();

	27 xhr.onload = function() {

	28 resolve(xhr.response);

	29 };

	30 });

	31 promise.then(function(response) {

	32 ctx.drawImage(response, 0, 0);

	33 _assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,25 5", 2);

	34 });

	35

	36 t.done();

	37

	38 });

	39 </script>

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