<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg">
<filter id="f" x="0" y="0" width="1" height="1" color-interpolation-filters="srcRGB">
<feOffset dx="0" dy="0" in="SourceGraphic"/>
</filter>
<!-- The test blends a red background with a green-to-blue gradient using the lighter blend
mode. That is equivalent to adding #f00 to those color positions, resulting in a gradient
from yellow to magenta. -->
<linearGradient id="y2m" x1="0" x2="0" y1="0" y2="1">
<stop offset="0" stop-color="#ff0"/>
<stop offset="1" stop-color="#f0f"/>
</linearGradient>
<rect width="200" height="200" fill="url(#y2m)" filter="url(#f)"/>
</svg>