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30 lines
957 B
30 lines
957 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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; c2 - envmaptint
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;------------------------------------------------------------------------------
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tex t0 ; base color
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tex t1 ; cube map
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tex t2 ; envmap mask
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tex t3 ; detail texture
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; version 1: applies the mod2x *after* environment map
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;mul r0.rgb, t1, 1-t2.a ; can't use mad cause can't use 3 texture registers
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;mul r0.rgb, c2, r0 ; apply the envmaptint
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;mad r0.rgb, t0, v0, r0
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;+ mul r0.a, t0, v0
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;mul_x2 r0.rgb, r0, t3 ; mod2x detail texture
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; version 2: applies the mod2x *before* environment map
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mul r0, t0, v0 ; Base times modulation color
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mul_x2 r0.rgb, r0, t3 ; mod2x detail texture
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mul r1, t1, 1-t2.a ; Have to invert the alpha for basealpha (feh!)
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mul r1, c2, r1 ; apply the envmaptint
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add r0.rgb, r0, r1 ; add in the envmap
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