clear-fixed-iframe.html | Explore in Territory

<!DOCTYPE html>
<html><head><title>Compositor Iframe Sadface</title>
<style>
body { margin: 0; padding: 0; }
.composited {
  will-change: transform;
  background-color: green;
  position:fixed;
  left:0; top:0; right:0; bottom:0;
}
iframe {
  position:fixed;
  left: 0; top: 0;
  width:100%;
  height: 100%;
  border:0;
}
</style>
</head>

<body>
<div class="composited"></div>

<!-- You should see a light green box filling the top/left of the window, inside a darker green background.
     If the "glass" in the iframe is considered opaque, then drawing errors will occur and tiles become black
     (light gray with the glass).
  -->
<iframe src="resources/clear-fixed-iframe-content.html" frameborder="0"></iframe>
</body>

</html>

chromium/third_party/blink/web_tests/compositing/culling/clear-fixed-iframe.html