22 lines
No EOL
524 B
C
22 lines
No EOL
524 B
C
#ifndef WMARK_H
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#define WMARK_H
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#include "common.h"
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#define NORMAL_SHIFT 0.007f
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#define MIN_SHIFT 0.003f
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#define MAX_SHIFT 0.011f
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#define RANGE 100.f
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float4 wmark_shift (float3 pos, float3 norm)
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{
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float3 P = pos;
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float3 N = norm;
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float3 sd = eye_position-P;
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float d = length(sd);
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float w = min(d/RANGE,1.f);
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float s = lerp(MIN_SHIFT,MAX_SHIFT,d);
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P += N.xyz*NORMAL_SHIFT;
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P -= normalize(eye_direction + normalize(P-eye_position)) * s;
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return float4 (P,1.f);
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}
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#endif |