2014-10-02 08:25:55 -07:00
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ps.1.1
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;------------------------------------------------------------------------------
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; Draw stuff
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;------------------------------------------------------------------------------
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tex t0 ; Contains spotlight
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tex t1 ; Contains base texture
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tex t2 ; Normalize world pos to light
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tex t3 ; Sample iris
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dp3 r0, t2_bx2, v0_bx2 ; r0 = N dot L
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lrp r1.rgb, t3.a, t3, t1 ; r1 = lerp( baseColor, irisSample.xyz, irisSample.a )
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mul r0.rgb, r0_sat, r1 ; Saturate ( N dot L )* lerp
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mul r0.rgb, r0, v0.a ; *= attenuation
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mul_x2 r0.rgb, r0, t0 + ; *= 2 * spotlight
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mov r0.a, t1.a
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