xps.1.1

; Inputs:
; t0          = surface normal (renormalize and dot with eye)
; t1          = eye direction
; c0          = base blob color
; c1          = ambient color
; c2          = alpha_scale


tex t0
tex t1			; is probably normalized anyway, the eye position hardly changes wrt the small bloblets

dp3 r0, t0_bx2, t1_bx2
mov r1, r0_sat
mul r0, 1-r1, 1-r1
mul r0.rgba, 1-r0, c0.rgba
add r0.rgb, r0.rgb, c1.rgb
mul r0.a, r0.a, c2.a