tf2/tf2_src/materialsystem/stdshaders/VertexLitGeneric_EnvMapNoTexture.psh

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

tex t1	; cube map

mul r0.rgb, t1, c2 +	; envmap * envmaptint (color only) +
mov r0.a, c3.a			; Use alpha from modulation... (?)

mul r0.rgb, v0, r0		; apply vertex lighting
mul_x2 r0.rgb, c0, r0   ; * 2 * (overbrightFactor/2)

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