81 lines
No EOL
2.3 KiB
PostScript
81 lines
No EOL
2.3 KiB
PostScript
#include "common.h"
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#include "shadow.h"
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struct v2p
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{
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float3 lightToPos : TEXCOORD0; // light center to plane vector
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float3 vPos : TEXCOORD1; // position in camera space
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half fDensity : TEXCOORD2; // plane density alon Z axis
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// half2 tNoise : TEXCOORD3; // projective noise
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};
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uniform float4 m_lmap [2];
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uniform sampler2D s_noise;
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#define USE_LMAP
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#define USE_LMAPXFORM
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#define USE_SHADOW
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//////////////////////////////////////////////////////////////////////////////////////////
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// Pixel
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half4 main ( v2p I ) : COLOR
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{
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// ----- shadow
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float4 P4 = half4(I.vPos, 1);
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float4 PS = mul( m_shadow, P4);
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half s = 1.h;
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#ifdef USE_SHADOW
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// #ifdef USE_SJITTER
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// s = shadowtest (PS,tcJ);
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// #else
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s = shadow(PS);
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// #endif
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#endif
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// ----- lightmap
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half4 lightmap = 1.h;
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#ifdef USE_LMAP
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#ifdef USE_LMAPXFORM
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PS.x = dot( P4, m_lmap[0]);
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PS.y = dot( P4, m_lmap[1]);
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#endif
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lightmap = tex2Dproj(s_lmap, PS); //
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#endif
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// ----- attenuate
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half rsqr = dot( I.lightToPos, I.lightToPos); // distance 2 light (squared)
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half att = saturate( 1 - rsqr * Ldynamic_pos.w ); // q-linear attenuate
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//half att = saturate( 1 - (rsqr * Ldynamic_pos.w)*(rsqr * Ldynamic_pos.w) ); // q-linear attenuate
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//half att = 10*(1/(1+0.1*rsqr));
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//half att = 1.0h/rsqr;
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//half att = 1.0h/rsqr-Ldynamic_pos.w;
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//half att = 5*(sqrt(1.0h/rsqr)-sqrt(Ldynamic_pos.w));
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// ----- noise
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PS.xy /= PS.w;
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half time = timers.z*0.1;
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PS.xy /= 3;
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PS.x += time;
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half4 t_noise = tex2D(s_noise,PS);
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PS.x -= time;
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PS.y -= time*0.70091;
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t_noise *= tex2D(s_noise,PS);
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//t_noise *= 4;
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t_noise = t_noise*0.5+0.5;
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// out
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//half maxIntens = 1.0h/100.0h;
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//half maxIntens = 1.0h/40.0h;
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//half maxIntens = 1.0h/10.0h;
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half maxIntens = I.fDensity;
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half3 result = maxIntens * s * att;
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result *= lightmap;
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result *= Ldynamic_color * t_noise;
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// result = maxIntens;
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// result *= lightmap;
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// result = 0.1h;
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// result = 0.0h;
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return half4( result, 0);
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} |