| OLD | NEW |
|---|
| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <style type="text/css"> |
| 5 .container { |
| 6 width: 60px; |
| 7 height: 60px; |
| 8 margin: 5px; |
| 9 } |
| 10 canvas { |
| 11 background-color: green; |
| 12 } |
| 13 #canvas-simple {} |
| 14 #canvas-padding { padding: 5px; } |
| 15 #canvas-border { border: 5px solid; } |
| 16 #canvas-image { background-image: url("../resources/simple_image.png"); } |
| 17 </style> |
| 18 <script> |
| 19 if (window.testRunner) { |
| 20 testRunner.overridePreference("WebKitWebGLEnabled", "1"); |
| 21 testRunner.dumpAsText(); |
| 22 } |
| 23 |
| 24 function drawCanvas(canvasID) { |
| 25 var canvas = document.getElementById(canvasID); |
| 26 var gl = canvas.getContext("experimental-webgl"); |
| 27 gl.clearColor(0, 0, 0, 0); |
| 28 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 29 }; |
| 30 |
| 31 function doTest() { |
| 32 // Simple background can be direct-composited with content-layer. |
| 33 // The container GraphicsLayer does not paint anything. |
| 34 drawCanvas('canvas-simple'); |
| 35 |
| 36 // Padding makes the background-box bigger than content-box. |
| 37 // The container GraphicsLayer needs to paint background. |
| 38 drawCanvas('canvas-padding'); |
| 39 |
| 40 // Content layer cannot direct-composite any kind of box decoration. |
| 41 // The container GraphicsLayer needs to paint box decorations. |
| 42 drawCanvas('canvas-border'); |
| 43 |
| 44 // Content layer cannot direct-composite background image. |
| 45 // The container GraphicsLayer needs to paint background image. |
| 46 drawCanvas('canvas-image'); |
| 47 |
| 48 if (window.testRunner && window.internals) |
| 49 document.getElementById('layer-tree').innerText = window.interna
ls.layerTreeAsText(document); |
| 50 }; |
| 51 window.addEventListener('load', doTest, false); |
| 52 </script> |
| 53 </head> |
| 54 |
| 55 <body> |
| 56 <div class="container"> |
| 57 <canvas id="canvas-simple" width="50" height="50"></canvas> |
| 58 </div> |
| 59 <div class="container"> |
| 60 <canvas id="canvas-padding" width="50" height="50"></canvas> |
| 61 </div> |
| 62 <div class="container"> |
| 63 <canvas id="canvas-border" width="50" height="50"></canvas> |
| 64 </div> |
| 65 <div class="container"> |
| 66 <canvas id="canvas-image" width="50" height="50"></canvas> |
| 67 </div> |
| 68 <pre id="layer-tree"></pre> |
| 69 </body> |
| 70 </html> |
| OLD | NEW |
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Chromium Code Reviews
Issue 19543014:
Direct composite canvas background if possible. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk