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<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<!--
This test verifies that feTurbulence creates a noise image that remains
anchored at the user space origin, not the filter region origin. The filter
region should act as a viewport into the anchored noise image.
-->
<svg xmlns="http://www.w3.org/2000/svg">
<!--
Place the filtered rect at (75, 75) in user space.
Make the filter region start at (-25, -25) from the top left corner of the rect.
Thus, the filter output should start at (50, 50).
-->
<filter id="f" x="-25%" y="-25%" width="100%" height="100%">
<feTurbulence type="turbulence" baseFrequency="0.01" numOctaves="1"></feTurbulence>
</filter>
<rect x="75" y="75" width="100" height="100" filter="url(#f)"/>
</svg>
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