| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| .box { |
| width: 120px; |
| height: 100px; |
| background-color: blue; |
| margin: 100px 100px; |
| position: relative; |
| box-shadow: 0 0 10px black; |
| transition: transform 5s; |
| transform: translateX(-400px); |
| } |
| |
| .sublayer { |
| width: 20px; |
| height: 20px; |
| background-color: green; |
| position: relative; |
| box-shadow: 0 0 10px black; |
| will-change: transform; |
| } |
| |
| body.changed .box { |
| transform: translateX(0px); |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| function dumpLayers() |
| { |
| if (window.testRunner) { |
| output.innerText = window.internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED); |
| testRunner.notifyDone(); |
| } |
| } |
| |
| window.addEventListener("load", function() { |
| document.body.classList.add('changed'); |
| window.setTimeout(dumpLayers, 0); |
| }); |
| </script> |
| </head> |
| <body> |
| |
| <div class="box"> |
| <div class="sublayer"></div> |
| </div> |
| <pre id="output"></pre> |
| </body> |
| </html> |
