| <!DOCTYPE HTML> |
| <html> |
| <body> |
| <script src="../../resources/js-test.js"></script> |
| <script type="text/javascript"> |
| |
| description("Verifies createPattern using a source image that is a canvas 40k pixels wide."); |
| // This test does not currently succeed because skia does not handle |
| // canvases more than 32k pixels wide. For now, this test serves the |
| // purpose of verifying that this use case does not crash the browser. |
| // Crasher bug: crbug.com/281504 |
| |
| var canvas = document.createElement('canvas'); |
| canvas.width = 40000; |
| var context = canvas.getContext('2d'); |
| context.fillStyle = '#0f0'; |
| context.fillRect(0, 0, 1, 1); |
| |
| var dstCanvas = document.createElement('canvas'); |
| var dstContext = dstCanvas.getContext('2d'); |
| var pattern = dstContext.createPattern(canvas, 'repeat'); |
| dstContext.fillStyle = pattern; |
| dstContext.fillRect(0, 0, dstCanvas.width, dstCanvas.height); |
| |
| var imageData = dstContext.getImageData(0, 0, 1, 1); |
| var imgdata = imageData.data; |
| shouldBe("imgdata[0]", "0"); |
| shouldBe("imgdata[1]", "255"); |
| shouldBe("imgdata[2]", "0"); |
| shouldBe("imgdata[3]", "255"); |
| |
| imageData = dstContext.getImageData(1, 0, 1, 1); |
| imgdata = imageData.data; |
| shouldBe("imgdata[0]", "0"); |
| shouldBe("imgdata[1]", "0"); |
| shouldBe("imgdata[2]", "0"); |
| shouldBe("imgdata[3]", "0"); |
| |
| imageData = dstContext.getImageData(0, 1, 1, 1); |
| imgdata = imageData.data; |
| shouldBe("imgdata[0]", "0"); |
| shouldBe("imgdata[1]", "0"); |
| shouldBe("imgdata[2]", "0"); |
| shouldBe("imgdata[3]", "0"); |
| </script> |
| </body> |
| </html> |
