| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| div { |
| position: absolute; |
| z-index: 1; |
| width: 10px; |
| height: 10px; |
| } |
| |
| .composited { |
| will-change: transform; |
| top: 60px; |
| left: 60px; |
| width: 400px; |
| height: 400px; |
| background-color: gray; |
| } |
| |
| .overlap1 { |
| top: 140px; |
| left: 140px; |
| background-color: blue; |
| } |
| |
| .overlap2 { |
| top: 220px; |
| left: 220px; |
| background-color: lime; |
| } |
| |
| .overlap3 { |
| top: 300px; |
| left: 220px; |
| background-color: green; |
| } |
| |
| .overlap4 { |
| top: 300px; |
| left: 235px; |
| background-color: yellow; |
| } |
| </style> |
| <script> |
| if (window.testRunner) |
| testRunner.dumpAsText(); |
| |
| function dump() { |
| if (!window.internals) |
| return; |
| var layers = document.createElement('pre'); |
| layers.innerHTML = internals.layerTreeAsText(document); |
| document.body.appendChild(layers); |
| } |
| |
| window.onload = dump; |
| </script> |
| </head> |
| |
| <body> |
| <!-- |
| If this test is working correctly, then the first two layers should not |
| squash together (as they would create a layer that's too sparse), but the |
| third and fourth layers should squash together. |
| --> |
| <div class="composited"></div> |
| <div id="A" class="overlap1"></div> |
| <div id="B" class="overlap2"></div> |
| <div id="C" class="overlap3"></div> |
| <div id="D" class="overlap4"></div> |
| </body> |
| </html> |
