<!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <title>Reference for objectBoundingBox with fePointLight</title> <!-- From https://bugzilla.mozilla.org/show_bug.cgi?id=544742 --> <defs> <filter id="light" primitiveUnits="userSpaceOnUse"> <feSpecularLighting lighting-color="blue" surfaceScale="5" specularConstant="10" specularExponent="6"> <fePointLight x="30" y="30" z="-5"/> </feSpecularLighting> <feComposite operator="in" in2="SourceGraphic"/> </filter> </defs> <g transform="translate(20 20)"> <rect width="40" height="20" filter="url(#light)" fill="black" stroke="none"/> </g> </svg>