| OLD | NEW |
|---|
| (Empty) | |
| 1 <html> |
| 2 <head> |
| 3 <title>Ensure correct behavior of drawImage video elements on both software ca
nvas and accelerated canvas. crbug.com/424591</title> |
| 4 <!-- |
| 5 This test is made to check a video bug rather than a canvas bug. When we use
both sw |
| 6 canvas and hw canvas, the video bug appears. |
| 7 The video impl has its own cache mechanism to cache SkBitmap after convertin
g |
| 8 video frame to SkBitmap. |
| 9 When hw canvas draws video, video caches SkBitmap backed on GrTexture. When
sw |
| 10 canvas draws video, video caches SkBitmap backed on system memory. |
| 11 The problem appears when we draws the video on both hw canvas and sw canvas. |
| 12 When hw canvas draws, the video caches GrTexture based SkBitmap. and then wh
en |
| 13 sw canvas draws, the video draws GrTexture based SkBitmap on sw canvas. |
| 14 Otherwise, if sw canvas draws prior, the video draws system memory SkBitmap
on |
| 15 hw canvas. |
| 16 --> |
| 17 <style trpe="text/css"> |
| 18 video { |
| 19 display: none; |
| 20 } |
| 21 </style> |
| 22 </head> |
| 23 <body> |
| 24 <canvas id="hw-canvas" width=300 height=300></canvas> |
| 25 <canvas id="sw-canvas" width=150 height=150></canvas> |
| 26 <video id="video" loop> |
| 27 <source src="resources/canvas_video.mp4" type='video/mp4' /> |
| 28 <source src="resources/canvas_video.webm" type='video/webm' /> |
| 29 <source src="resources/canvas_video.ogv" type='video/ogg' /> |
| 30 </video> |
| 31 <script> |
| 32 if (window.testRunner) { |
| 33 testRunner.dumpAsTextWithPixelResults(); |
| 34 testRunner.waitUntilDone(); |
| 35 } |
| 36 if (window.internals) |
| 37 window.internals.settings.setMinimumAccelerated2dCanvasSize(257*256); |
| 38 |
| 39 var hw_canvas = document.getElementById("hw-canvas"); |
| 40 var hw_ctx = hw_canvas.getContext("2d"); |
| 41 // Although enabling accelerated-2d-canvas, canvas with the dimension |
| 42 // less than 257*256 is not accelerated. |
| 43 var sw_canvas = document.getElementById("sw-canvas"); |
| 44 var sw_ctx = sw_canvas.getContext("2d"); |
| 45 |
| 46 var video = document.getElementById("video"); |
| 47 video.addEventListener("playing", drawImageToCanvas, true); |
| 48 video.play(); |
| 49 |
| 50 function drawVideo(ctx, canvas) { |
| 51 ctx.globalAlpha = 1; |
| 52 ctx.fillStyle = "blue"; |
| 53 ctx.fillRect(0, 0, canvas.width, canvas.width); |
| 54 ctx.drawImage(video, 0, 0); |
| 55 ctx.globalAlpha = 0.5; |
| 56 ctx.drawImage(video, 0, 60); |
| 57 } |
| 58 |
| 59 function drawImageToCanvas() { |
| 60 video.removeEventListener("playing", drawImageToCanvas, true); |
| 61 for (i = 0; i < 10; i++) { |
| 62 drawVideo(sw_ctx, sw_canvas); |
| 63 drawVideo(hw_ctx, hw_canvas); |
| 64 } |
| 65 if (window.testRunner) |
| 66 testRunner.notifyDone(); |
| 67 } |
| 68 </script> |
| 69 </body> |
| 70 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 656683007:
Add a layout test for potential bug on drawing video on SkCanvas (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master