| <!DOCTYPE html> |
| <canvas id="canvas" width="300" height="300"></canvas> |
| <script> |
| // Testing that getImageData does NOT unaccelerate the canvas |
| var canvas = document.getElementById('canvas'); |
| var ctx = canvas.getContext('2d', { willReadFrequently: false }); |
| |
| var img = document.createElement('IMG'); |
| img.onload = function () { |
| ctx.getImageData(0, 0, canvas.width, canvas.height); |
| ctx.drawImage(img, 0, 0, 300, 300); |
| } |
| |
| // This src image correspond to a gradient white line |
| img.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAJCAYAAADgkQYQ" + |
| "AAAAGklEQVQYlWNgYGD4j4z/////H12MYVQRUYoAkYZrlWt0UekAAAAASUVORK5CYII="; |
| |
| </script> |
