| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .fixed { |
| position: fixed; |
| width: 10px; |
| height: 10px; |
| background-color: silver; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| if (window.internals) { |
| window.internals.settings.setAcceleratedCompositingForFixedPositionEnabled(true); |
| |
| addEventListener("load", function() { |
| document.getElementById("layerTree").innerText = internals.layerTreeAsText(document); |
| |
| window.internals.setPageScaleFactor(0.5, 0, 0); |
| setTimeout(function() { |
| document.getElementById("layerTreeScaledDown").innerText = internals.layerTreeAsText(document); |
| |
| window.internals.setPageScaleFactor(1.5, 0, 0); |
| setTimeout(function() { |
| document.getElementById("layerTreeScaledUp").innerText = internals.layerTreeAsText(document); |
| testRunner.notifyDone(); |
| }, 0); |
| }, 0); |
| }, false); |
| } |
| </script> |
| </head> |
| <body> |
| <div style="height: 1000px"> |
| Not scaled: |
| <pre id="layerTree"></pre> |
| Scale=0.5: |
| <pre id="layerTreeScaledDown"></pre> |
| Scale=1.5: |
| <pre id="layerTreeScaledUp"></pre> |
| </div> |
| <!-- The layer tree should always be the same, regardless of page scale, except on platforms that enable the applyPageScaleFactorInCompositor Setting. --> |
| <!-- No layer in any case. --> |
| <div class="fixed" style="top: -100px"></div> |
| <!-- When applyPageScaleFactorInCompositor is true, this will have a composited layer when scaled down; no layer when not scaled or scaled up. --> |
| <div class="fixed"></div> |
| <div class="fixed" style="top: 0px; left: 1000px"></div> |
| <!-- When applyPageScaleFactorInCompositor is true, this will have composited layer when not scaled and scaled down; no layer scaled up. --> |
| <div class="fixed" style="top: 0px; left: 600px"></div> |
| <!-- Always has composited layer. --> |
| <div class="fixed" style="top: 0px; left: 0px"></div> |
| </body> |
| </html> |
