<spshader>
    <shader-info name="additive" transparent="Y" use-alpha-channel="Y"/>
    <first-pass use-function="additiveUse" vertex-shader="sp_pass.vert"
        fragment-shader="sp_transparent.frag"
        skinned-mesh-shader="sp_skinning.vert">
    </first-pass>
    <uniform-assigners>
        <uniform-assigner name="fog_enabled"
        function="fogUniformAssigner"/>
        <uniform-assigner name="custom_alpha"
        function="zeroAlphaUniformAssigner"/>
    </uniform-assigners>
</spshader>
