| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>OffscreenCanvas test: initial.reset.different</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| |
| <h1>initial.reset.different</h1> |
| <p class="desc">Changing size resets canvas to transparent black</p> |
| |
| |
| <script> |
| var t = async_test("Changing size resets canvas to transparent black"); |
| t.step(function() { |
| |
| var offscreenCanvas = new OffscreenCanvas(100, 50); |
| var ctx = offscreenCanvas.getContext('2d'); |
| |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(0, 0, 50, 50); |
| _assertPixel(offscreenCanvas, 20,20, 255,0,0,255, "20,20", "255,0,0,255"); |
| offscreenCanvas.width = 50; |
| _assertPixel(offscreenCanvas, 20,20, 0,0,0,0, "20,20", "0,0,0,0"); |
| |
| t.done(); |
| |
| }); |
| </script> |
