declare shader
    color "summed_noise_color" (
	scalar "point_scale" default 1,
	scalar "octave_scaling" default 2,
	scalar "summing_weight" default 2,
	integer "number_of_octaves" default 5,
	scalar "red_exponent" default 1,
	scalar "green_exponent" default 1,
	scalar "blue_exponent" default 1
    )
    version 1
    apply material, texture
end declare