Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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5 years ago
ps.1.1
;------------------------------------------------------------------------------
; Draw a texture . . woo hoo!
; t0 - texture
;
; The texture coordinates need to be defined as follows:
; tc0 - texcoords
;------------------------------------------------------------------------------
tex t0 ; base color
tex t1 ; cube map
tex t2 ; envmap mask (in alpha channel)
tex t3 ; detail texture
mul r0, t0, c3 ; base times modulation
mul_x2 r0.rgb, r0, t3 ; detail texture
mul r1, t1, 1-t2.a ; Envmap * mask (in alpha channel)
mad r0.rgb, r1, c2, r0 ; Base * mod + envmap * mask * tint
mul r0.rgb, v0, r0 ; apply vertex lighting
mul_x2 r0.rgb, c0, r0 ; * 2 * (overbrightFactor/2)