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https://github.com/nillerusr/source-engine.git
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24 lines
667 B
Plaintext
24 lines
667 B
Plaintext
ps.1.1
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;------------------------------------------------------------------------------
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; Draw a texture . . woo hoo!
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; t0 - texture
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;
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; The texture coordinates need to be defined as follows:
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; tc0 - texcoords
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;------------------------------------------------------------------------------
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def c2, 1.0f, 1.0f, 1.0f, 1.0f
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tex t0
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tex t1
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; Blend between white and lightmap color based on total alpha
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mul_x2 r1.rgb, c0, t1 ; Apply overbright to lightmap
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+ mov_sat r1.a, v0 ; opacity == vertex opacity (no alpha in texture)
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lrp r0.rgb, t0.a, c1, r1 ; Blend between self-illum + lightmap
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+ mov r0.a, c2.a
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lrp r0.rgb, r1.a, r0, c2 ; interpolate between white + color
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