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<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<svg id="svg-root"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="testmeta">
<title>SVG Filter Chains: Second Filter Uses SourceAlpha</title>
<link rel="copyright"
href="http://www.w3.org/Graphics/SVG/Test/Copyright"/>
<link rel="license"
href="http://www.w3.org/Consortium/Legal/2008/03-bsd-license.html"/>
<link rel="author"
title="Max Vujovic"
href="mailto:mvujovic@adobe.com"/>
<link rel="help"
href="http://dev.w3.org/fxtf/filters/#FilterPrimitiveSubRegion"/>
<link rel="match"
href="second-filter-uses-SourceAlpha.svg" />
<metadata class="flags">namespace svg</metadata>
<desc class="assert">
In an SVG filter chain, this test verifies that a filter receives the
correct SourceAlpha input from the previous filter in the chain. If the
test passes, you should see a blurred green square.
</desc>
</g>
<g id="test-body-content">
<filter id="blur">
<feGaussianBlur stdDeviation="3"/>
</filter>
<filter id="add-green">
<!--
This filter receives transparent black and the alpha channel of the
previous blur filter. Then, it adds to the green channel where the alpha
channel is set, resulting in a blurred green square.
-->
<feComponentTransfer in="SourceAlpha">
<feFuncR type="identity"/>
<feFuncG type="table" tableValues="1 1"/>
<feFuncB type="identity"/>
<feFuncA type="identity"/>
</feComponentTransfer>
</filter>
<rect x="100" y="100" width="100" height="100" filter="url(#blur) url(#add-green)" fill="red"/>
</g>
</svg>
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