| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .container { |
| width: 200px; |
| height: 200px; |
| position: absolute; |
| overflow: scroll; |
| -webkit-perspective: 100px; |
| -webkit-transform-style: preserve-3d; |
| } |
| |
| .child { |
| position: absolute; |
| top: 65px; |
| width: 60px; |
| height: 200px; |
| } |
| |
| .first { |
| left: 0px; |
| background-color: green; |
| transform: translateZ(10px); |
| } |
| |
| .second { |
| left: 65px; |
| background-color: blue; |
| transform: translateZ(20px); |
| } |
| </style> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| if (window.internals) { |
| window.internals.settings.setPreferCompositingToLCDTextEnabled(true); |
| } |
| |
| function runTest() { |
| var pre = document.createElement('pre'); |
| if (!window.internals) { |
| var description = "This test ensures that the accelerated overflow " |
| + "scrolling machinery is not invoked for the body element."; |
| pre.innerHTML = description; |
| } else { |
| document.body.offsetTop; |
| pre.innerHTML = internals.layerTreeAsText(document); |
| } |
| document.body.appendChild(pre); |
| } |
| window.onload = runTest; |
| </script> |
| </head> |
| <body> |
| <div class="container"> |
| <div class="child first"> </div> |
| <div class="child second"> </div> |
| </div> |
| </body> |
| </html> |
