| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| test(function() { |
| var canvas = document.createElement('canvas'); |
| canvas.width = canvas.height = 10; |
| var offscreen = canvas.transferControlToOffscreen(); |
| var ctx = offscreen.getContext('2d'); |
| ctx.fillStyle = '#ff0'; |
| ctx.fillRect(0, 0, 10, 10); |
| var pixel = ctx.getImageData(0, 0, 1, 1).data; |
| assert_array_equals(pixel, [255, 255, 0, 255]); |
| }, "Verify that commit preserves the contents of an OffscreenCanvas with a 2d context."); |
| </script> |
