| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .layerized { |
| transform: translateZ(0); |
| width: 300px; |
| height: 300px; |
| } |
| .vspace { |
| height: 1000px; |
| } |
| |
| #out { |
| position: absolute; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| window.onload = function() { |
| if (!window.testRunner) |
| return; |
| |
| let beforeScrollLayers = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED); |
| |
| requestAnimationFrame(() => { |
| |
| window.scrollTo(0, 3000); |
| |
| let uiScript = `(function() { |
| uiController.doAfterNextStablePresentationUpdate(function() { |
| uiController.uiScriptComplete(); |
| }); |
| })()` |
| |
| testRunner.runUIScript(uiScript, () => { |
| let afterLayers = internals.layerTreeAsText(document, internals.LAYER_TREE_INCLUDES_BACKING_STORE_ATTACHED); |
| let out = document.getElementById('out'); |
| out.textContent = `Before\n${beforeScrollLayers}\n\nAfter\n${afterLayers}` |
| testRunner.notifyDone(); |
| }); |
| }); |
| }; |
| </script> |
| </head> |
| <body> |
| <pre id="out"></pre> |
| <div class="layerized">First layer.</div> |
| <div class="vspace"></div> |
| <div class="layerized">Second layer.</div> |
| <div class="vspace"></div> |
| <div class="layerized">Third layer.</div> |
| </body> |
| </html> |
