OLD | NEW |
(Empty) | |
| 1 <!DOCTYPE html> |
| 2 <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| 3 <title>OffscreenCanvas test: 2d.composite.uncovered.nocontext.destination-in</ti
tle> |
| 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.nocontext.destination-in</h1> |
| 9 <p class="desc">drawImage() of a canvas with no context draws pixels as (0,0,0,0
), and does not leave the pixels unchanged.</p> |
| 10 |
| 11 |
| 12 <script> |
| 13 var t = async_test("drawImage() of a canvas with no context draws pixels 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 = 'destination-in'; |
| 23 var offscreenCanvas2 = new OffscreenCanvas(100, 50); |
| 24 ctx.drawImage(offscreenCanvas2, 0, 0); |
| 25 _assertPixelApprox(offscreenCanvas, 50,25, 0,0,0,0, "50,25", "0,0,0,0", 5); |
| 26 |
| 27 t.done(); |
| 28 |
| 29 }); |
| 30 </script> |
OLD | NEW |