<svg xmlns="http://www.w3.org/2000/svg" width="500" height="500" version="1.1">
  <defs>
    <filter id="filter1" color-interpolation-filters="sRGB">
      <feColorMatrix x="100" y="0" width="100" height="200" result="color2"/>
    </filter>
  </defs>
  <g filter="url(#filter1)">
    <rect x="0" y="0" width="100" height="100" fill="red"/>
    <rect x="100" y="0" width="100" height="100" fill="green"/>
  </g>
</svg>
