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25 lines
720 B
25 lines
720 B
5 years ago
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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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tex t0
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tex t1
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; Blend between grey and lightmap color based on total alpha
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def c0 0.5f 0.5f 0.5f 1.0f
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mul_x2 r1.rgb, c0, t1 ; Apply overbright to lightmap
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+ mul r1.a, t0, v0 ; base times vertex alpha
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; GR - workaround for const/lerp issues
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mul r0.rgb, c1, t0 ; Self illum * tint
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+mul_sat r0.a, c1, t0
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lrp r1.rgb, t0.a, r1, r0 ; Blend between self-illum + lightmap
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lrp r0, r1.a, r1, c0 ; interpolate between grey + color
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