| <!DOCTYPE HTML> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script> |
| function createNewCanvas(width, height) |
| { |
| var canvas = document.createElement("canvas"); |
| canvas.width = width; |
| canvas.height = height; |
| var ctx = canvas.getContext("2d"); |
| ctx.clearRect(0, 0, width, height); |
| return ctx; |
| } |
| |
| function compareTwoCanvases(ctx1, ctx2, width, height) |
| { |
| var data1 = ctx1.getImageData(0, 0, width, height).data; |
| var data2 = ctx2.getImageData(0, 0, width, height).data; |
| var dataMatched = true; |
| for (var i = 0; i < data1.length; i++) { |
| if (data1[i] != data2[i]) { |
| dataMatched = false; |
| break; |
| } |
| } |
| assert_false(dataMatched); |
| } |
| |
| async_test(function(t) { |
| var video = document.createElement("video"); |
| video.oncanplaythrough = t.step_func_done(function() { |
| video.pause(); |
| var width = 100; |
| var height = 100; |
| var ctx1 = createNewCanvas(width, height); |
| var ctx2 = createNewCanvas(width, height); |
| ctx1.imageSmoothingEnabled = false; |
| ctx2.imageSmoothingEnabled = true; |
| ctx2.imageSmoothingQuality = 'high'; |
| ctx1.drawImage(video, 0, 0, video.videoWidth, video.videoHeight, 0, 0, width, height); |
| ctx2.drawImage(video, 0, 0, video.videoWidth, video.videoHeight, 0, 0, width, height); |
| compareTwoCanvases(ctx1, ctx2, width, height); |
| }); |
| video.preload = "auto"; |
| video.src = "../../compositing/resources/video.ogv"; |
| }, 'drawImage from a video should look differently with imageSmoothing enabled'); |
| </script> |
