| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="/js-test-resources/js-test.js"></script> |
| <script> |
| description("The pattern created by OffscreenCanvas2D from cross-origin image must be tainted."); |
| |
| function shouldBeTainted(pattern) { |
| var canvas = document.createElement("canvas"); |
| canvas.width = 10; |
| canvas.height = 10; |
| var context = canvas.getContext("2d"); |
| // Setting tainted pattern as fillStyle on HTMLCanvas will taint the canvas. |
| context.fillStyle = pattern; |
| context.fillRect(0, 0, canvas.width, canvas.height); |
| try { |
| var imageData = context.getImageData(0, 0, 10, 10); |
| testFailed("ImageBitmap is not tainted."); |
| } catch (e) { |
| testPassed("ImageBitmap is tainted. Threw error: " + e); |
| } |
| } |
| |
| var image = document.createElement('img'); |
| image.src = 'http://localhost:8080/security/resources/abe.png'; |
| image.addEventListener('load', function() { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| var offscreenContext = offscreenCanvas.getContext("2d"); |
| var pat = offscreenContext.createPattern(image, "no-repeat"); |
| shouldBeTainted(pat); |
| }); |
| |
| </script> |
| </body> |
| </html> |
