;shadowbuffer pixel shader
xps.1.1

tex t0			;get texture
tex t1			;get shadow from light
mul r0, v0, t1  ;diffuse*shadow
add	r0, r0, c0	;diffuse*shadow+ambient
mul	r0, t0, r0	;texture*light
xfc 1-zero, r0, zero, zero, zero, zero, zero