| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>OffscreenCanvas test: 2d.imageData.put.modified</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/2dcontext/resources/canvas-tests.js"></script> |
| |
| <h1>2d.imageData.put.modified</h1> |
| <p class="desc">putImageData() puts modified image data correctly</p> |
| |
| |
| <script> |
| var t = async_test("putImageData() puts modified image data correctly"); |
| t.step(function() { |
| |
| var offscreenCanvas = new OffscreenCanvas(100, 50); |
| var ctx = offscreenCanvas.getContext('2d'); |
| |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 100, 50) |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(45, 20, 10, 10) |
| var imgdata = ctx.getImageData(45, 20, 10, 10); |
| for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4) |
| { |
| imgdata.data[i] = 0; |
| imgdata.data[i+1] = 255; |
| } |
| ctx.putImageData(imgdata, 45, 20); |
| _assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2); |
| |
| t.done(); |
| |
| }); |
| </script> |
