-- distort colormapped
function normal(shader, t_base, t_second, t_detail)
    shader:begin("null", "postprocess_d")
        :fog(false)
        :zb(false, false)
    shader:sampler("s_distort"):texture(t_distort):clamp():f_linear()
    --	shader:sampler	("s_base0")		:texture(t_rt)		: clamp() : f_linear ()
    --	shader:sampler	("s_base1")    	:texture(t_rt)		: clamp() : f_linear ()
    shader:sampler("s_base0"):texture("$user$rendertarget_color_map"):clamp():f_linear()
    shader:sampler("s_base1"):texture("$user$rendertarget_color_map"):clamp():f_linear()
    shader:sampler("s_noise"):texture(t_noise):f_linear()
end

function l_special(shader, t_base, t_second, t_detail)
    shader:begin("null", "postprocess_cm_pre")
        :fog(false)
        :zb(false, false)
    shader:sampler("s_distort"):texture(t_distort):clamp():f_linear()
    shader:sampler("s_base0"):texture(t_rt):clamp():f_linear()
    shader:sampler("s_base1"):texture(t_rt):clamp():f_linear()
    shader:sampler("s_noise"):texture(t_noise):f_linear()
    --	shader:sampler	("s_grad0")    	:texture("grad\\grad_red_yellow")	: clamp() : f_linear ()
    --	shader:sampler	("s_grad1")    	:texture("grad\\grad_test1")	: clamp() : f_linear ()
    shader:sampler("s_grad0"):texture("$user$cmap0"):clamp():f_linear()
    shader:sampler("s_grad1"):texture("$user$cmap1"):clamp():f_linear()
end