| <!DOCTYPE html> |
| <title>Canvas test: 2d.imageData.create2.large</title> |
| <script src="../tests.js"></script> |
| <link rel="stylesheet" href="../tests.css"> |
| <body> |
| <p id="passtext">Pass</p> |
| <p id="failtext">Fail</p> |
| <p class="output">These images should be identical:</p> |
| <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> |
| |
| <ul id="d"></ul> |
| <script> |
| _addTest(function(canvas, ctx) { |
| |
| var imgdata = ctx.createImageData(1000, 2000); |
| _assertEqual(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4"); |
| _assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height"); |
| _assert(imgdata.width > 0, "imgdata.width > 0"); |
| var isTransparentBlack = true; |
| for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling) |
| if (imgdata.data[i] !== 0) |
| isTransparentBlack = false; |
| _assert(isTransparentBlack, "isTransparentBlack"); |
| |
| |
| }); |
| </script> |
| |
