source-engine/materialsystem/stdshaders/LightmappedGeneric_MultiplyByLightingSelfIllum.psh

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2020-04-22 16:56:21 +00:00
ps.1.1
;------------------------------------------------------------------------------
; Draw a texture . . woo hoo!
; t0 - texture
;
; The texture coordinates need to be defined as follows:
; tc0 - texcoords
;------------------------------------------------------------------------------
def c2, 1.0f, 1.0f, 1.0f, 1.0f
tex t0
tex t1
; Blend between white and lightmap color based on total alpha
mul_x2 r1.rgb, c0, t1 ; Apply overbright to lightmap
+ mov_sat r1.a, v0 ; opacity == vertex opacity (no alpha in texture)
lrp r0.rgb, t0.a, c1, r1 ; Blend between self-illum + lightmap
+ mov r0.a, c2.a
lrp r0.rgb, r1.a, r0, c2 ; interpolate between white + color