tf2/tf2_src/materialsystem/stdshaders/VertexLitGeneric_BaseAlphaMaskedEnvMapV2.psh

; DYNAMIC: "WRITEONETODESTALPHA" "0..1"
ps.1.1

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

mul r0, t0, c3			; Base times modulation
mul r1, t1, 1-t2.a		; Envmap * mask (in alpha channel)
mul r0.rgb, v0, r0		; apply vertex lighting
mul_x2 r0.rgb, c0, r0   ; * 2 * (overbrightFactor/2)
mad	r0.rgb, r1, c2, r0	; + envmap * mask * tint

#if WRITEONETODESTALPHA
+mov r0.a, c4			; make alpha 255
#endif