| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>OffscreenCanvas test: 2d.imageData.put.dirty.negative</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/common/canvas-tests.js"></script> |
| |
| <h1>2d.imageData.put.dirty.negative</h1> |
| <p class="desc">putImageData() handles negative-sized dirty rectangles correctly</p> |
| |
| |
| <script> |
| var t = async_test("putImageData() handles negative-sized dirty rectangles correctly"); |
| t.step(function() { |
| |
| var offscreenCanvas = new OffscreenCanvas(100, 50); |
| var ctx = offscreenCanvas.getContext('2d'); |
| |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(0, 0, 100, 50) |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 20, 20) |
| var imgdata = ctx.getImageData(0, 0, 100, 50); |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 100, 50) |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(40, 20, 20, 20) |
| ctx.putImageData(imgdata, 40, 20, 20, 20, -20, -20); |
| _assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 35,25, 0,255,0,255, "35,25", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 65,25, 0,255,0,255, "65,25", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 50,15, 0,255,0,255, "50,15", "0,255,0,255", 2); |
| _assertPixelApprox(offscreenCanvas, 50,45, 0,255,0,255, "50,45", "0,255,0,255", 2); |
| |
| t.done(); |
| |
| }); |
| </script> |
