LayoutTests/compositing/backing/child-layer-no-backing.html - WebKit - Git at Google

 <!DOCTYPE html>

 <html>
 <head>
     <style>
         .container {
             height: 200px;
             width: 200px;
             margin: 10px;
         }

         .composited {
             -webkit-transform: translateZ(0);
         }

         .child {
             position: relative;
             height: 100%;
             width: 100%;
         }
     </style>
     <script>
         if (window.testRunner)
             testRunner.dumpAsText();

         function dumpLayers()
         {
             var layersResult = document.getElementById('layers');
             if (window.testRunner)
                 layersResult.innerText = window.internals.layerTreeAsText(document);
         }

         window.addEventListener('load', dumpLayers, false)
     </script>
 </head>
 <body>
     <div class="composited container">
         <div class="child">
         </div>
     </div>

     <div class="composited container">
         <div class="child">
             <div class="child">
             </div>
         </div>
     </div>

     <div class="composited container">
         <div class="child" style="visibility:hidden">
             Child content
         </div>
     </div>

     <div class="composited container">
         <div class="child" style="visibility:hidden">
             Child content
             <div class="child" style="visibility:visible">
                 Grandchild content
             </div>
         </div>
     </div>

     <div class="composited container">
         <div class="child" style="visibility:hidden">
             <div class="child" style="visibility:visible; border: 1px solid black">
             </div>
         </div>
     </div>

 <pre id="layers">Layer tree goes here in DRT</pre>
 </body>
 </html>
	<!DOCTYPE html>

	<html>
	<head>
	<style>
	.container {
	height: 200px;
	width: 200px;
	margin: 10px;
	}

	.composited {
	-webkit-transform: translateZ(0);
	}

	.child {
	position: relative;
	height: 100%;
	width: 100%;
	}
	</style>
	<script>
	if (window.testRunner)
	testRunner.dumpAsText();

	function dumpLayers()
	{
	var layersResult = document.getElementById('layers');
	if (window.testRunner)
	layersResult.innerText = window.internals.layerTreeAsText(document);
	}

	window.addEventListener('load', dumpLayers, false)
	</script>
	</head>
	<body>
	<div class="composited container">
	<div class="child">
	</div>
	</div>

	<div class="composited container">
	<div class="child">
	<div class="child">
	</div>
	</div>
	</div>

	<div class="composited container">
	<div class="child" style="visibility:hidden">
	Child content
	</div>
	</div>

	<div class="composited container">
	<div class="child" style="visibility:hidden">
	Child content
	<div class="child" style="visibility:visible">
	Grandchild content
	</div>
	</div>
	</div>

	<div class="composited container">
	<div class="child" style="visibility:hidden">
	<div class="child" style="visibility:visible; border: 1px solid black">
	</div>
	</div>
	</div>

	<pre id="layers">Layer tree goes here in DRT</pre>
	</body>
	</html>