<renderpath>
    <rendertarget name="WorldA" tag="WorldA" enabled="true" format="rgba"/>
    <rendertarget name="WorldB" tag="WorldB" enabled="true" format="rgba"/>
    <rendertarget name="WorldP" tag="WorldP" enabled="true" format="rgba"/>

    <command type="clear" color="fog" depth="1.0" stencil="0" />
    <command type="scenepass" pass="base" vertexlights="true" metadata="base" />
    <command type="forwardlights" pass="light" />
    <command type="scenepass" pass="postopaque" />
    <command type="scenepass" pass="refract">
        <texture unit="environment" name="viewport" />
    </command>
    <command type="scenepass" pass="alpha" vertexlights="true" sort="backtofront" metadata="alpha" />
    <command type="scenepass" pass="postalpha" sort="backtofront" />
</renderpath>