<!-- 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>Testcase for objectBoundingBox with fePointLight</title> <!-- From https://bugzilla.mozilla.org/show_bug.cgi?id=544742 --> <defs> <filter id="light" primitiveUnits="objectBoundingBox"> <feSpecularLighting lighting-color="blue" surfaceScale="5" specularConstant="10" specularExponent="6"> <!-- Note: for z the scalefactor is 31,622776601683793319988935444327 sqrt(bbox.width*bbox.width + bbox.height*bbox.height)/sqrt(2) --> <fePointLight x="0.75" y="1.5" z="-0.15811388300841896659994467722167"/> </feSpecularLighting> <feComposite operator="in" in2="SourceGraphic"/> </filter> </defs> <rect x="20" y="20" width="40" height="20" filter="url(#light)" fill="black" stroke="none" /> </svg>