mirror of
https://github.com/nillerusr/source-engine.git
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35 lines
767 B
Plaintext
35 lines
767 B
Plaintext
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ps.1.1
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def c0, 1,0,0,0
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def c1, 0,1,0,0
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def c2, 0,0,1,0
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;------------------------------------------------------------------------------
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; Computes the diffuse component of lighting using lightmap + bumpmap
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; t0 - Normalmap
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; t1 - Lightmap1
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; t2 - Lightmap2
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; t3 - Lightmap3
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;
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; The texture coordinates need to be defined as follows:
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; tc0 - Normalmap and lightmap texture coordinates
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;------------------------------------------------------------------------------
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; Get the 3-vector from the normal map
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tex t0
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; Sample the lightmaps
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tex t1
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tex t2
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tex t3
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; output = lightmapColor[0] * n.r + lightmapColor[1] * n.g + lightmapColor[2] * n.b
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mov r0, t0
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dp3 r1, t0, c0
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mul r0.rgb, r1, t1
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dp3 r1, t0, c1
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mad r0.rgb, r1, t2, r0
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dp3 r1, t0, c2
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mad r0.rgb, r1, t3, r0
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