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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.composite.canvas.destination-atop</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.composite.canvas.destination-atop</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 | |
| 20 var offscreenCanvas2 = new OffscreenCanvas(offscreenCanvas.width, offscreenCanva
s.height); | |
| 21 var ctx2 = offscreenCanvas2.getContext('2d'); | |
| 22 var promise = new Promise(function(resolve, reject) { | |
| 23 var xhr = new XMLHttpRequest(); | |
| 24 xhr.open("GET", '/images/yellow75.png'); | |
| 25 xhr.responseType = 'blob'; | |
| 26 xhr.send(); | |
| 27 xhr.onload = function() { | |
| 28 resolve(xhr.response); | |
| 29 }; | |
| 30 }); | |
| 31 promise.then(function(response) { | |
| 32 ctx2.drawImage(response, 0, 0); | |
| 33 ctx.fillStyle = 'rgba(0, 255, 255, 0.5)'; | |
| 34 ctx.fillRect(0, 0, 100, 50); | |
| 35 ctx.globalCompositeOperation = 'destination-atop'; | |
| 36 ctx.drawImage(offscreenCanvas2, 0, 0); | |
| 37 _assertPixelApprox(offscreenCanvas, 50,25, 128,255,128,191, "50,25", "128,25
5,128,191", 5); | |
| 38 }); | |
| 39 | |
| 40 t.done(); | |
| 41 | |
| 42 }); | |
| 43 </script> | |
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