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+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns='http://www.w3.org/2000/svg'>
+ <!--
+ A basic test for the <feSpecularLighting> filter primitive.
+ Setting kernelUnitLength on the <feSpecularLighting> should allow us to
+ assume pixel perfection.
+ -->
+ <filter id='f' x='0' y='0' width='1' height='1' color-interpolation-filters='sRGB'>
+ <feSpecularLighting kernelUnitLength='1' result='a'>
+ <feDistantLight azimuth='45'/>
+ </feSpecularLighting>
+ <feComposite in='a' in2='SourceAlpha' operator='in' result='b'/>
+ <feComposite in='SourceGraphic' in2='b' operator='arithmetic' k1='0' k2='1' k3='1' k4='0' x='10' y='10' width='80' height='80'/>
+ </filter>
+ <rect width='100' height='100' fill='blue'/>
+ <path d='M0,0 h100 v100 h-100 z M20,20 v60 h60 v-60 z' filter='url(#f)'/>
+
+ <!-- Cover two spots in the test whose rendering differs in opt builds
+ vs. debug builds (see Bug 610945). -->
+ <rect x='78' y='18' width='4' height='4'/>
+ <rect x='18' y='78' width='4' height='4'/>
+</svg>