mirror of
https://github.com/SWG-Source/clientdata_OLD.git
synced 2026-07-14 00:01:59 -04:00
29 lines
805 B
PHP
Executable File
29 lines
805 B
PHP
Executable File
// ======================================================================
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// inputs:
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//
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// none
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//
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// outputs:
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//
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// oT0 = texture coordinate for NRML map
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// oT1 = directon to light (packed into 0..1 range)
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//
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// ======================================================================
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// ----------------------------------------------------------------------
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// transform the light direction into texture space, pack into 0..1 range
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mov r0.xyz, vTextureCoordinateSetDOT3
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mov r2.xyz, vNormal
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dp3 r2.w, r2, r2
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rsq r2.w, r2.w
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mul r2.xyz, r2,r2.w
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mul r1.xyz, r2.zxy, r0.yzx
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mad r1.xyz, r2.yzx, r0.zxy, -r1.xyz
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mul r1.xyz, r1, vTextureCoordinateSetDOT3.w
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m3x3 r0.xyz, cLightData_dot3_0_direction, r0
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mad oT0.xyz, r0, c0_5, c0_5
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mov oT1, vTextureCoordinateSetNRML
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