declare shader
    color "hair_color_light" (
        color "ambient"   default 0 0 0,
        color "diffuse"   default 1 1 1,
	color "specular"  default 0 0 0,
	scalar "exponent" default 30,
        scalar "root_opacity" default 1,
        scalar "tip_opacity"  default 0,
	scalar "color_variance" default .1,
        array light "lights"
    )
    version 1
    apply material
end declare