<!DOCTYPE html>
<html>
<head>
<style>
.box {
position: relative;
height: 100px;
width: 100px;
margin: 10px;
left: 0;
top: 0;
background-color: silver;
}
.preserve3d {
width: 300px;
border: 1px solid black;
padding: 20px;
margin: 10px;
-webkit-transform-style: preserve-3d;
}
</style>
<script>
if (window.testRunner)
testRunner.dumpAsText();
function dumpLayers()
{
var layersResult = document.getElementById('layers');
if (window.testRunner)
layersResult.innerText = internals.layerTreeAsText(document);
}
window.addEventListener('load', dumpLayers, false)
</script>
</head>
<body>
<div class="preserve3d" id="layer1">
This layer should not be composited.
<div class="box" id="box1"></div>
</div>
<div class="preserve3d" id="layer2">
This layer should not be composited.
<div class="box" id="box2" style="transform: rotate(10deg)"></div>
</div>
<div class="preserve3d" id="layer3">
This layer should be composited.
<div class="box" id="box3" style="transform: rotateY(10deg)"></div>
</div>
<pre id="layers">Layer tree goes here in DRT</pre>
</body>
</html>