filter-invalidation-after-display.html

<!DOCTYPE html>
<style>
.green {
  background-color: green;
}
.box {
  width: 200px;
  height: 200px;
  position: absolute;
  left: 300px;
}
.drop-shadowed {
  filter: drop-shadow(100px 100px 10px red);
}
</style>
<!--
    This test checks that we correctly invalidate filters when they are removed.
    There should be no red below.
-->
<div class="green drop-shadowed box" id="box"></div>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
    var box = document.getElementById('box');
    box.classList.toggle('drop-shadowed');
}
window.onload = runRepaintAndPixelTest;
</script>

chromium/third_party/blink/web_tests/paint/invalidation/filters/filter-invalidation-after-display.html