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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.uncovered.pattern.source-in</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.uncovered.pattern.source-in</h1> |
| 9 <p class="desc">Pattern fill() draws pixels not covered by the source object as
(0,0,0,0), and does not leave the pixels unchanged.</p> |
| 10 |
| 11 |
| 12 <script> |
| 13 var t = async_test("Pattern fill() draws pixels not covered by the source object
as (0,0,0,0), and does not leave the pixels unchanged."); |
| 14 t.step(function() { |
| 15 |
| 16 var offscreenCanvas = new OffscreenCanvas(100, 50); |
| 17 var ctx = offscreenCanvas.getContext('2d'); |
| 18 |
| 19 |
| 20 ctx.fillStyle = 'rgba(0, 255, 255, 0.5)'; |
| 21 ctx.fillRect(0, 0, 100, 50); |
| 22 ctx.globalCompositeOperation = 'source-in'; |
| 23 var promise = new Promise(function(resolve, reject) { |
| 24 var xhr = new XMLHttpRequest(); |
| 25 xhr.open("GET", '/images/yellow.png'); |
| 26 xhr.responseType = 'blob'; |
| 27 xhr.send(); |
| 28 xhr.onload = function() { |
| 29 resolve(xhr.response); |
| 30 }; |
| 31 }); |
| 32 promise.then(function(response) { |
| 33 ctx.fillStyle = ctx.createPattern(response, 'no-repeat'); |
| 34 ctx.fillRect(0, 50, 100, 50); |
| 35 _assertPixelApprox(offscreenCanvas, 50,25, 0,0,0,0, "50,25", "0,0,0,0", 5); |
| 36 }); |
| 37 |
| 38 t.done(); |
| 39 |
| 40 }); |
| 41 </script> |
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