function normal(shader, t_base, t_second, t_detail)
    shader:begin("stub_default", "stub_default")

    --	Decouple sampler and texture
    --	shader:sampler	("s_base")	: texture(t_base)	: clamp() : f_linear ()
    --	TODO: DX10: move stub_default to smp_rtlinear
    shader:dx10texture("s_base", t_base)
    shader:dx10sampler("smp_base")
end