| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style type="text/css" media="screen"> |
| .hidden { |
| visibility: hidden; |
| } |
| |
| .visible { |
| visibility: visible; |
| } |
| |
| .box { |
| width: 300px; |
| height: 300px; |
| } |
| |
| .composited { |
| -webkit-transform: translatez(0); |
| } |
| |
| .topLeft { |
| position: absolute; |
| top: 0px; |
| left: 0px; |
| } |
| |
| .stackingContext { |
| position: absolute; |
| z-index: 5; |
| } |
| |
| .red { |
| background-color: red; |
| } |
| |
| .green { |
| background-color: green; |
| } |
| </style> |
| </head> |
| <body> |
| <!-- |
| https://bugs.webkit.org/show_bug.cgi?id=108118 |
| |
| The boolean check RenderLayerBacking::hasVisibleNonCompositingDescendant() |
| was actually not checking for visible content beyond children layers. As a |
| result, composited layers sometimes did not see that they actually have |
| visible content in a descendant RenderLayer. This test recreates that |
| scenario by using visibility:hidden stacking contexts to create a deeper |
| hierarchy of RenderLayers within on composited layer. |
| |
| The green box should be visible, hiding the red box. |
| --> |
| <div> |
| |
| <div class="topLeft red box"> |
| </div> |
| |
| <div class="composited topLeft hidden box"> |
| <div class="hidden stackingContext"> |
| <div class="hidden stackingContext"> |
| <div class="visible green box"> |
| </div> |
| </div> |
| </div> |
| </div> |
| |
| </div> |
| </body> |
| </html> |
