<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <title>Testcase for the combination of use, mask, opacity</title> <!-- Shapes --> <defs> <rect id="frame" x="0" y="0" width="256" height="256"></rect> <circle id="outter" cx="128" cy="128" r="128"></circle> </defs> <!-- Masks --> <defs> <mask id="donut"> <use xlink:href="#outter" fill="white"></use> </mask> </defs> <g transform="translate(0,0)"> <use xlink:href="#frame" class="shape" opacity="0.33" mask="url(#donut)"></use> </g> </svg>