source-engine/materialsystem/stdshaders/WorldTwoTextureBlend_DetailAlpha.psh
FluorescentCIAAfricanAmerican 3bf9df6b27 1
2020-04-22 12:56:21 -04:00

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ps.1.1
;------------------------------------------------------------------------------
; Draw a texture . . woo hoo!
; t0 - texture
;
; The texture coordinates need to be defined as follows:
; tc0 - texcoords
;------------------------------------------------------------------------------
def c1, 1.0f, 1.0f, 1.0f, 1.0f
tex t0
tex t1
tex t2
mov_x2_sat r0.rgb, t0 + ; r0 = sat( t0 * 2 )
mul r0.a, t0.a, v0.a ; Grab alpha from vertex color
lrp_sat r0.rgb, t2.a, r0, c1 ; r0 = B*Da + (1-Da)
mul r0.rgb, r0, t2 ; modulate by detail color
mul r0.rgb, r0, v0 ; modulate by vertex color
mul r0.rgb, t1, r0 ; fold in lightmap (color only)
mul_x2 r0.rgb, c0, r0 ; * 2 * (overbrightFactor/2)