<!doctype html>
<title>Filtered &lt;marker> with &lt;clipPath> ancestor on &lt;polygon></title>
<link rel="match" href="../../struct/reftests/reference/green-100x100.html">
<svg>
  <clipPath>
    <marker id="m" filter="url(#f)"/>
    <filter id="f"/>
  </clipPath>
  <polygon points="0,0 100,0 100,100 0,100" fill="green" marker-start="url(#m)"/>
</svg>
