SDK_WaterRefractFresnel_ps11.psh #1

ps.1.1

; t0: 
;		texture: dudv map
;		texcoords: dudvmap texcoords
; t1:
;		texture: refraction render target
;		texcoords: 

tex t0				; sample dudv map
texbem t1, t0		; refraction
tex t2				; The normal map
tex t3				; Normalize the tangent-space vector to the eye

; dot eye-vector with per-pixel normal from t2
#ifndef _XBOX
dp3_sat r1.rgba, t2_bx2, t3_bx2
#else
dp3 r1.rgba, t2_bx2, t3_bx2
mov r1, r1_sat 
#endif

mul r0.a, 1-r1.a, 1-r1.a			; squared
mul r0.a, r0.a, r0.a				; quartic

mul r0.rgb, t1, c0
#ifndef _XBOX
+mul_sat r0.a, r0.a, 1-r1.a			; quintic
#else
+mul r0.a, r0.a, 1-r1.a
mov r0.a, r0_sat.a
#endif

#ifndef _XBOX
add_sat r0.a, r0.a, v0.a			; cheap water distance
#else
add r0.a, r0.a, v0.a
mov r0.a, r0_sat.a
#endif