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<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
body {
height: 1000px;
}
.green {
background-color: green;
}
.fixed {
position: fixed;
top: 0px;
left: 0px;
}
.box {
width: 300px;
height: 300px;
}
.container {
position: relative;
}
.perspective {
-webkit-perspective: 1px;
}
</style>
<script src="../../../resources/run-after-layout-and-paint.js"></script>
<script>
if (window.testRunner) {
testRunner.dumpAsTextWithPixelResults();
}
function doTest()
{
if (window.testRunner)
testRunner.waitUntilDone();
// Any scroll should keep the fixed-position element where it is.
// If it stutters or disappears incorrectly, then the red background will be revealed.
window.scrollTo(0, 150);
if (window.testRunner) {
runAfterLayoutAndPaint(function() {
testRunner.notifyDone();
});
}
}
window.addEventListener('load', doTest, false);
</script>
</head>
<body>
<div class="green fixed box">
<div class="container">
<div class="perspective"></div>
</div>
</div>
</body>
</html>
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