Team Fortress 2 Source Code as on 22/4/2020
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ps.1.1
; Get the 3-vector from the normal maptex t0
; Perform matrix multiply to get a local normal bump. Then; reflect the eye vector through the normal and sample from ; a cubic environment map.texm3x3pad t1, t0_bx2texm3x3pad t2, t0_bx2 texm3x3vspec t3, t0_bx2
mul r0.rgb, t3, c1 ; multiply color by reflecttint+mov_sat r0.a, v0.a ; NOTE: This is necessary since v0.a can be outside 0 - 1!add_sat r0.a, c1.a, r0.a ; cheap water blend factor + constant blend factor
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