tf2/tf2_src/materialsystem/stdshaders/UnlitGeneric_EnvMapMask.psh

ps.1.1

;------------------------------------------------------------------------------
; Draw a texture . . woo hoo!
; t0 - texture
;
; The texture coordinates need to be defined as follows:
; tc0 - texcoords
; c2 - envmaptint 
;------------------------------------------------------------------------------

tex t0	; base color
tex t1	; cube map
tex t2	; envmap mask

mul r0.rgb, t1, t2	; can't use mad cause can't use 3 texture registers
mul r0.rgb, c2, r0	; apply the envmaptint
mad r0.rgb, t0, v0, r0
+ mul r0.a, t0, v0