eyes.psh

hl2 source code. Do not use it illegal.

ps.1.1

;------------------------------------------------------------------------------
; Draw the eyes
; t0 - texture
; t1 - iris
; t2 - glint
;------------------------------------------------------------------------------

tex t0
tex t1
tex t2

lrp	r0, t1.a, t1, t0		; Blend in the iris with the background 
mad r0.rgb, r0, v0, t2 +	; Modulate by the illumination, add in the glint
mov r0.a, t0.a