| <!DOCTYPE html> |
| <html> |
| <body> |
| <p> |
| Test for crbug.com/609820. When running this test on Mac with retina display, |
| the result should be a clear canvas with no artifact after a few seconds. |
| </p> |
| <canvas id='output' width='300' height='250'></canvas> |
| <script> |
| var repeat = 350; |
| var x = y = 0; |
| var canvas = document.getElementById("output"); |
| var ctx = canvas.getContext('2d'); |
| ctx.fillStyle = "#FF0000"; |
| |
| requestAnimationFrame(animate); |
| |
| function animate() |
| { |
| ctx.clearRect(x, y, 50, 50); |
| x++; |
| y++; |
| ctx.fillRect(x, y, 50, 50); |
| repeat--; |
| if (repeat > 0) |
| requestAnimationFrame(animate); |
| } |
| </script> |
| </body> |
| </html> |
| |
