lots-of-img-layers-with-opacity.html

<!DOCTYPE html>
<body style="overflow:hidden">
<script>
for (var i=0; i<350; ++i) {
    var img = document.createElement("img");
    img.style.transform = "rotate("+(i/2)+"deg)";
    img.style.willChange = "transform";
    img.style.transformOrigin = "300px 300px";
    img.style.position = "absolute";
    img.style.opacity = 0.2;
    document.body.appendChild(img);
    img.src = "resources/apple.jpg";
}
</script>
</body>

chromium/third_party/blink/web_tests/compositing/lots-of-img-layers-with-opacity.html