ps.1.1

// 1221 filter constants
def c0, 0.1667f,  0.1667f, 0.1667f, 0.3333f

tex t0
tex t1
tex t2
tex t3

mul r0.rgb, t0, c0
mad r0.rgb, t1, c0.a, r0
mad r0.rgb, t2, c0.a, r0
mad r0.rgb, t3, c0, r0

mul r0.rgb, r0, c1 +
mov r0.a, t0.a