| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .underlay { |
| position: fixed; |
| width: 1024px; |
| height: 1042px; |
| background-color: rgba(0, 0, 0, 0.9); |
| } |
| |
| .image { |
| position: relative; |
| width: 100px; |
| height: 100px; |
| background-color: green; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| if (window.internals) |
| window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true); |
| |
| async function doTest() |
| { |
| if (window.testRunner) { |
| await testRunner.setPageScaleFactor(3, 0, 0); |
| document.getElementById('layers').innerText = window.internals.layerTreeAsText(document); |
| testRunner.notifyDone(); |
| } |
| } |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <div class="underlay"></div> |
| <div class="image">Image</div> |
| <pre id="layers"></pre> |
| </body> |
| </html> |
