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
; t0:
; texture: dudv map
; texcoords: dudvmap texcoords
; t1:
; texture: refraction render target
; texcoords:
#if 1
tex t0 ; sample dudv map
texbem t1, t0 ; refraction
tex t2
mov r0, t1
mul r0.rgb, r0, c0
lrp r0.rgb, t2.a, t2, r0
;mov r0, t2
#else
texcoord t0
mov r0.rgba, t0
#endif