testing/web-platform/tests/css/filter-effects/svg-mutation-single-to-multiple-001.html


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<!doctype html>
<html class="reftest-wait">
<title>Filter Effects: extending the filter chain with an additional function on SVG element</title>
<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#funcdef-filter-drop-shadow">
<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#funcdef-filter-hue-rotate">
<link rel="match" href="reference/green-100x100.html">
<script src="/common/rendering-utils.js"></script>
<script src="/common/reftest-wait.js"></script>
<svg>
  <rect width="100" height="100" fill="red"/>
  <rect id="target" width="50" height="100" fill="rgb(71.79%, 28.82%, 0%)"
	filter="hue-rotate(90deg)"/>
</svg>
<script>
  waitForAtLeastOneFrame().then(() => {
    let rect = document.getElementById("target");
    rect.setAttribute("filter", "hue-rotate(90deg) drop-shadow(50px 0 green)");
    takeScreenshot();
  });
</script>