function normal   (shader, t_base, t_second, t_detail)
	shader:begin	("model_scope_lense","model_scope_lense")
      : fog			(false)
      : zb			(true,false)
      : blend		(true,blend.srcalpha,blend.invsrcalpha)
      : aref		(false,0)
      : sorting		(2,true)
      : distort		(false)
	shader:sampler  ("s_base")		:texture	(t_base)
	shader:sampler  ("s_vp2")		:texture	("$user$viewport2")
end
