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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.imageData.get.order.cols</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.imageData.get.order.cols</h1> |
| 9 <p class="desc">getImageData() returns leftmost columns first</p> |
| 10 |
| 11 |
| 12 <script> |
| 13 var t = async_test("getImageData() returns leftmost columns first"); |
| 14 t.step(function() { |
| 15 |
| 16 var offscreenCanvas = new OffscreenCanvas(100, 50); |
| 17 var ctx = offscreenCanvas.getContext('2d'); |
| 18 |
| 19 ctx.fillStyle = '#fff'; |
| 20 ctx.fillRect(0, 0, 100, 50); |
| 21 ctx.fillStyle = '#000'; |
| 22 ctx.fillRect(0, 0, 2, 50); |
| 23 var imgdata = ctx.getImageData(0, 0, 10, 10); |
| 24 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); |
| 25 _assertSame(imgdata.data[Math.round(imgdata.width/2*4)], 255, "imgdata.data[Math
.round(imgdata.width/2*4)]", "255"); |
| 26 _assertSame(imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)], 0, "im
gdata.data[Math.round((imgdata.height/2)*imgdata.width*4)]", "0"); |
| 27 |
| 28 t.done(); |
| 29 |
| 30 }); |
| 31 </script> |
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