[1519] | 1 | float REDUCED_CUBEMAP_SIZE;
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| 2 |
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| 3 | float4 readCubeMap(samplerCUBE cm, float3 coord)
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| 4 | {
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[1525] | 5 | float4 color = texCUBE( cm, float3(coord.xy, -coord.z) );
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[1519] | 6 | color.a = 1;
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| 7 | return color;
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| 8 | }
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| 9 |
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| 10 | float readDistanceCubeMap(samplerCUBE dcm, float3 coord)
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| 11 | {
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| 12 | float dist = texCUBE(dcm, float3(coord.xy, - coord.z)).r;
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[1590] | 13 | if(dist == 0) dist = 1000000; ///sky
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[1519] | 14 | return dist;
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| 15 | }
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| 16 |
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| 17 | // This function is called several times.
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| 18 | float3 Hit( float3 x, float3 R, samplerCUBE mp )
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| 19 | {
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| 20 | float rl = readDistanceCubeMap( mp, R); // |r|
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| 21 |
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| 22 | float ppp = length( x ) / readDistanceCubeMap( mp, x); // |p|/|p|
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| 23 | float dun = 0, pun = ppp, dov = 0, pov = 0;
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| 24 | float dl = rl * ( 1 - ppp ); // eq. 2
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| 25 | float3 l = x + R * dl; // ray equation
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| 26 |
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| 27 | // iteration
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| 28 | for( int i = 0; i < 2; i++ ) // 2 !!!!!!!!!!!!!!!!!!!!!!!
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| 29 | {
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| 30 | float llp = length( l ) / readDistanceCubeMap( mp, l); // |l|/|l|
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| 31 | if ( llp < 0.999f ) // undershooting
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| 32 | {
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| 33 | dun = dl; pun = llp; // last undershooting
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| 34 | dl += ( dov == 0 ) ? rl * ( 1 - llp ) : // eq. 2
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| 35 | ( dl - dov ) * ( 1 - llp ) / ( llp - pov ); // eq. 3
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| 36 | } else if ( llp > 1.001f ) // overshooting
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| 37 | {
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| 38 | dov = dl; pov = llp; // last overshooting
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| 39 | dl += ( dl -dun ) * ( 1 - llp ) / ( llp - pun );// eq. 3
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| 40 | }
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| 41 | l = x + R * dl; // ray equation
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| 42 | }
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| 43 | return l; // computed hit point
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| 44 | }
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| 45 |
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| 46 | /////////////////////
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| 47 | ///// Diffuse
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| 48 | ///////////////////
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| 49 |
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[1590] | 50 | float4 GetContibution(float3 L, float3 L1, float3 L2, float3 L3, float3 L4, float3 pos, float3 N, samplerCUBE cubemap)
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[1519] | 51 | {
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[1590] | 52 | float d;
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| 53 | //d = texCUBE(cubemap, L).a;
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| 54 | d = readDistanceCubeMap(cubemap, L1).r;
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[1525] | 55 | L1 = d * normalize(L1);
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[1590] | 56 | d = readDistanceCubeMap(cubemap, L2).r;
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[1525] | 57 | L2 = d * normalize(L2);
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[1590] | 58 | d = readDistanceCubeMap(cubemap, L3).r;
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| 59 | L3 = d * normalize(L3);
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| 60 | d = readDistanceCubeMap(cubemap, L4).r;
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[1525] | 61 | L4 = d * normalize(L4);
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[1590] | 62 |
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[1525] | 63 |
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| 64 | float3 r1 = normalize(L1 - pos);
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| 65 | float3 r2 = normalize(L2 - pos);
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| 66 | float3 r3 = normalize(L3 - pos);
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| 67 | float3 r4 = normalize(L4 - pos);
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[1590] | 68 | /*
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[1525] | 69 | float tri1 = acos(dot(r1, r2)) * dot(cross(r1, r2), N);
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| 70 | float tri2 = acos(dot(r2, r3)) * dot(cross(r2, r3), N);
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| 71 | float tri3 = acos(dot(r3, r4)) * dot(cross(r3, r4), N);
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| 72 | float tri4 = acos(dot(r4, r1)) * dot(cross(r4, r1), N);
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[1590] | 73 | */
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| 74 | float3 crossP = cross(r1, r2);
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| 75 | float r = length(crossP);
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| 76 | float dd = dot(r1,r2);
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| 77 | float tri1 = acos(dd) * dot(crossP/r, N);
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| 78 |
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| 79 | crossP = cross(r2, r3);
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| 80 | r = length(crossP);
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| 81 | dd = dot(r1,r2);
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| 82 | float tri2 = acos(dd) * dot(crossP/r, N);
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| 83 |
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| 84 | crossP = cross(r3, r4);
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| 85 | r = length(crossP);
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| 86 | dd = dot(r1,r2);
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| 87 | float tri3 = acos(dd) * dot(crossP/r, N);
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| 88 |
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| 89 | crossP = cross(r4, r1);
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| 90 | r = length(crossP);
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| 91 | dd = dot(r1,r2);
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| 92 | float tri4= acos(dd) * dot(crossP/r, N);
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| 93 |
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| 94 |
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[1525] | 95 | return max(tri1 + tri2 + tri3 + tri4, 0);
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[1590] | 96 | //return tri1 + tri2 + tri3 + tri4;
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[1519] | 97 | }
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| 98 |
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[1590] | 99 |
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[1519] | 100 | struct vertOUT
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| 101 | {
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| 102 | float4 hPos :POSITION;
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| 103 | float3 wPos :TEXCOORD1;
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| 104 | float2 texCoord :TEXCOORD0;
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| 105 | float3 mNormal :TEXCOORD2;
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| 106 | };
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| 107 |
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| 108 | vertOUT DiffuseVS(float4 position : POSITION,
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| 109 | float3 normal : NORMAL,
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| 110 | half3 tangent : TEXCOORD1,
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| 111 | float2 texCoord : TEXCOORD0,
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| 112 | uniform float4x4 worldViewProj,
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[1638] | 113 | uniform float4x4 worldI,
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[1519] | 114 | uniform float4x4 world)
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| 115 | {
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| 116 | vertOUT OUT;
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| 117 | OUT.hPos = mul(worldViewProj, position);
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| 118 | OUT.wPos = mul(world, position).xyz;
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[1638] | 119 | OUT.mNormal = mul(normal, worldI);
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[1590] | 120 | //OUT.mNormal = normal;
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[1519] | 121 | OUT.texCoord = texCoord;
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| 122 | return OUT;
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| 123 | }
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| 124 |
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[1590] | 125 |
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[1519] | 126 | float4 DiffusePS( vertOUT IN,
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| 127 | uniform float3 cameraPos,
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| 128 | uniform float3 lastCenter, //LI//
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| 129 | uniform samplerCUBE SmallEnvMapSampler : register(s0),
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[1590] | 130 | uniform samplerCUBE DistanceEnvMapSampler : register(s1)
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[1519] | 131 | ) : COLOR0
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| 132 | {
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[1590] | 133 | float M = 4;
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| 134 |
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| 135 | float3 N = IN.mNormal;
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[1519] | 136 | N = normalize( N );
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| 137 | float3 pos = IN.wPos - lastCenter;
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[1590] | 138 |
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[1638] | 139 | //return float4(N,1)+ lastCenter.x*0.000001;
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[1590] | 140 | // return float4(N,1)+ lastCenter.x*0.000001;
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| 141 | // return readCubeMap(SmallEnvMapSampler, pos) + lastCenter.x*0.000001;
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| 142 |
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| 143 | float4 I = 0;
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| 144 | float3 L1, L2, L3, L4, L;
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| 145 | float4 Le;
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| 146 | float width = 1.0 / M;
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| 147 | float width2 = width * 2;
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| 148 | float d;
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| 149 |
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[1638] | 150 | for (float x = 1; x < M; x++)
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| 151 | for (float y = 1; y < M; y++)
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[1590] | 152 | {
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[1519] | 153 | float2 p, tpos;
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[1590] | 154 | tpos.x = x * width;
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| 155 | tpos.y = y * width;
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[1519] | 156 |
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[1590] | 157 | p = tpos.xy;
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| 158 | p = 2.0 * p - 1.0; //-1..1
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| 159 |
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[1525] | 160 | L1 = float3(p.x - width, p.y - width, 1);
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| 161 | L2 = float3(p.x + width, p.y - width, 1);
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| 162 | L3 = float3(p.x + width, p.y + width, 1);
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| 163 | L4 = float3(p.x - width, p.y + width, 1);
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| 164 | L = float3(p.x, p.y, 1);
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[1590] | 165 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 166 |
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| 167 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 168 |
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| 169 | }
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[1525] | 170 |
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[1638] | 171 | for (float x = 1; x < M; x++)
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| 172 | for (float y = 1; y < M; y++)
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[1590] | 173 | {
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[1525] | 174 | float2 p, tpos;
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[1590] | 175 | tpos.x = x * width; // 0..1
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| 176 | tpos.y = y * width; // 0..1
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[1519] | 177 |
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[1590] | 178 | p = tpos.xy;
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| 179 | p = 2.0 * p - 1.0; //-1..1
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| 180 |
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[1525] | 181 | L4 = float3(p.x - width, p.y - width, -1);
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| 182 | L3 = float3(p.x + width, p.y - width, -1);
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| 183 | L2 = float3(p.x + width, p.y + width, -1);
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| 184 | L1 = float3(p.x - width, p.y + width, -1);
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| 185 | L = float3(p.x, p.y, -1);
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[1590] | 186 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 187 |
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| 188 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 189 | }
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| 190 |
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[1638] | 191 | for (float x = 1; x < M; x++)
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| 192 | for (float y = 1; y < M; y++)
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[1590] | 193 | {
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[1525] | 194 | float2 p, tpos;
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[1590] | 195 | tpos.x = x * width; // 0..1
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| 196 | tpos.y = y * width; // 0..1
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[1519] | 197 |
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[1590] | 198 | p = tpos.xy;
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| 199 | p = 2.0 * p - 1.0; //-1..1
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| 200 |
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[1525] | 201 | L4 = float3(p.x - width, 1, p.y - width);
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| 202 | L3 = float3(p.x + width, 1, p.y - width);
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| 203 | L2 = float3(p.x + width, 1, p.y + width);
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| 204 | L1 = float3(p.x - width, 1, p.y + width);
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[1519] | 205 | L = float3(p.x, 1, p.y);
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[1590] | 206 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 207 |
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| 208 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 209 | }
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| 210 |
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[1638] | 211 | for (float x = 1; x < M; x++)
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| 212 | for (float y = 1; y < M; y++)
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[1590] | 213 | {
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[1525] | 214 | float2 p, tpos;
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[1590] | 215 | tpos.x = x * width; // 0..1
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| 216 | tpos.y = y * width; // 0..1
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[1525] | 217 |
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[1590] | 218 | p = tpos.xy;
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| 219 | p = 2.0 * p - 1.0; //-1..1
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| 220 |
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[1525] | 221 | L1 = float3(p.x - width, -1, p.y - width);
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| 222 | L2 = float3(p.x + width, -1, p.y - width);
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| 223 | L3 = float3(p.x + width, -1, p.y + width);
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| 224 | L4 = float3(p.x - width, -1, p.y + width);
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[1519] | 225 | L = float3(p.x, -1, p.y);
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[1590] | 226 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 227 |
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| 228 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 229 | }
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| 230 |
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[1638] | 231 | for (float x = 1; x < M; x++)
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| 232 | for (float y = 1; y < M; y++)
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[1590] | 233 | {
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[1525] | 234 | float2 p, tpos;
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[1590] | 235 | tpos.x = x * width; // 0..1
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| 236 | tpos.y = y * width; // 0..1
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[1525] | 237 |
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[1590] | 238 | p = tpos.xy;
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| 239 | p = 2.0 * p - 1.0; //-1..1
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| 240 |
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[1525] | 241 | L1 = float3(1, p.x - width, p.y - width);
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| 242 | L2 = float3(1, p.x + width, p.y - width);
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| 243 | L3 = float3(1, p.x + width, p.y + width);
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| 244 | L4 = float3(1, p.x - width, p.y + width);
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[1519] | 245 | L = float3(1, p.x, p.y);
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[1590] | 246 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 247 |
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| 248 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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[1525] | 249 | }
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[1590] | 250 |
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[1638] | 251 | for (float x = 1; x < M; x++)
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| 252 | for (float y = 1; y < M; y++)
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[1590] | 253 | {
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[1525] | 254 | float2 p, tpos;
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[1590] | 255 | tpos.x = x * width; // 0..1
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| 256 | tpos.y = y * width; // 0..1
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[1525] | 257 |
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[1590] | 258 | p = tpos.xy;
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| 259 | p = 2.0 * p - 1.0; //-1..1
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| 260 |
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[1525] | 261 | L4 = float3(-1, p.x - width, p.y - width);
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| 262 | L3 = float3(-1, p.x + width, p.y - width);
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| 263 | L2 = float3(-1, p.x + width, p.y + width);
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| 264 | L1 = float3(-1, p.x - width, p.y + width);
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[1519] | 265 | L = float3(-1, p.x, p.y);
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[1590] | 266 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 267 |
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| 268 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 269 | }
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[1638] | 270 | float kd = 0.5;
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[1590] | 271 | return kd * I;
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[1535] | 272 | }
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| 273 |
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[1671] | 274 | struct vertOUTBump
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| 275 | {
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| 276 | float4 hPos :POSITION;
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| 277 | float3 wPos :TEXCOORD1;
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| 278 | float2 texCoord :TEXCOORD0;
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| 279 | float3 mNormal :TEXCOORD2;
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| 280 | float3 tangent :TEXCOORD3;
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| 281 | float3 binormal :TEXCOORD4;
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| 282 | };
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| 283 |
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| 284 | vertOUTBump DiffuseBumpVS(float4 position : POSITION,
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| 285 | float3 normal : NORMAL,
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| 286 | half3 tangent : TEXCOORD1,
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| 287 | float2 texCoord : TEXCOORD0,
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| 288 | uniform float4x4 worldViewProj,
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| 289 | uniform float4x4 world)
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| 290 | {
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| 291 | vertOUTBump OUT;
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| 292 | OUT.hPos = mul(worldViewProj, position);
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| 293 | OUT.wPos = mul(world, position).xyz;
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| 294 | OUT.mNormal = normal;
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| 295 | OUT.tangent = tangent;
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| 296 | OUT.texCoord = texCoord;
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| 297 | OUT.binormal = cross(tangent, normal);
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| 298 | return OUT;
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| 299 | }
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| 300 |
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| 301 | float4 DiffuseBumpPS( vertOUTBump IN,
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| 302 | uniform float3 cameraPos,
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| 303 | uniform float3 lastCenter, //LI//
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| 304 | uniform samplerCUBE SmallEnvMapSampler : register(s0),
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| 305 | uniform samplerCUBE DistanceEnvMapSampler : register(s1),
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| 306 | uniform sampler2D NormalMap : register(s2),
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| 307 | uniform float4x4 worldI
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| 308 | ) : COLOR0
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| 309 | {
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| 310 | float M = 4;
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| 311 |
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| 312 | float3 N = IN.mNormal;
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| 313 | N = normalize( N );
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| 314 | float3x3 TangentToModel = float3x3(IN.tangent, IN.binormal, N);
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| 315 |
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| 316 | half3 tNormal = tex2D(NormalMap, IN.texCoord).rgb;
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| 317 |
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| 318 | N = mul(tNormal, TangentToModel );
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| 319 |
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| 320 | N = normalize( N );
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| 321 | N = mul(N, worldI);
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| 322 |
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| 323 | float3 pos = IN.wPos - lastCenter;
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| 324 |
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| 325 | //return float4(N,1)+ lastCenter.x*0.000001;
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| 326 | // return readCubeMap(SmallEnvMapSampler, pos) + lastCenter.x*0.000001;
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| 327 |
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| 328 | float4 I = 0;
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| 329 | float3 L1, L2, L3, L4, L;
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| 330 | float4 Le;
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| 331 | float width = 1.0 / M;
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| 332 | float width2 = width * 2;
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| 333 | float d;
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| 334 |
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| 335 | for (float x = 0.5; x < M; x++)
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| 336 | for (float y = 0.5; y < M; y++)
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| 337 | {
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| 338 | float2 p, tpos;
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| 339 | tpos.x = x * width;
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| 340 | tpos.y = y * width;
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| 341 |
|
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| 342 | p = tpos.xy;
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| 343 | p = 2.0 * p - 1.0; //-1..1
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| 344 |
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| 345 | L1 = float3(p.x - width, p.y - width, 1);
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| 346 | L2 = float3(p.x + width, p.y - width, 1);
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| 347 | L3 = float3(p.x + width, p.y + width, 1);
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| 348 | L4 = float3(p.x - width, p.y + width, 1);
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| 349 | L = float3(p.x, p.y, 1);
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| 350 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 351 |
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| 352 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 353 |
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| 354 | }
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| 355 |
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| 356 | for (float x = 0.5; x < M; x++)
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| 357 | for (float y = 0.5; y < M; y++)
|
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| 358 | {
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| 359 | float2 p, tpos;
|
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| 360 | tpos.x = x * width; // 0..1
|
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| 361 | tpos.y = y * width; // 0..1
|
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| 362 |
|
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| 363 | p = tpos.xy;
|
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| 364 | p = 2.0 * p - 1.0; //-1..1
|
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| 365 |
|
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| 366 | L4 = float3(p.x - width, p.y - width, -1);
|
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| 367 | L3 = float3(p.x + width, p.y - width, -1);
|
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| 368 | L2 = float3(p.x + width, p.y + width, -1);
|
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| 369 | L1 = float3(p.x - width, p.y + width, -1);
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| 370 | L = float3(p.x, p.y, -1);
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| 371 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 372 |
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| 373 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 374 | }
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| 375 |
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| 376 | for (float x = 0.5; x < M; x++)
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| 377 | for (float y = 0.5; y < M; y++)
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| 378 | {
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| 379 | float2 p, tpos;
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| 380 | tpos.x = x * width; // 0..1
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| 381 | tpos.y = y * width; // 0..1
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| 382 |
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| 383 | p = tpos.xy;
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| 384 | p = 2.0 * p - 1.0; //-1..1
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| 385 |
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| 386 | L4 = float3(p.x - width, 1, p.y - width);
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| 387 | L3 = float3(p.x + width, 1, p.y - width);
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| 388 | L2 = float3(p.x + width, 1, p.y + width);
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| 389 | L1 = float3(p.x - width, 1, p.y + width);
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| 390 | L = float3(p.x, 1, p.y);
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| 391 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 392 |
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| 393 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 394 | }
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| 395 |
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| 396 | for (float x = 0.5; x < M; x++)
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| 397 | for (float y = 0.5; y < M; y++)
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| 398 | {
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| 399 | float2 p, tpos;
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| 400 | tpos.x = x * width; // 0..1
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| 401 | tpos.y = y * width; // 0..1
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| 402 |
|
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| 403 | p = tpos.xy;
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| 404 | p = 2.0 * p - 1.0; //-1..1
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| 405 |
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| 406 | L1 = float3(p.x - width, -1, p.y - width);
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| 407 | L2 = float3(p.x + width, -1, p.y - width);
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| 408 | L3 = float3(p.x + width, -1, p.y + width);
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| 409 | L4 = float3(p.x - width, -1, p.y + width);
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| 410 | L = float3(p.x, -1, p.y);
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| 411 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
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| 412 |
|
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| 413 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
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| 414 | }
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| 415 |
|
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| 416 | for (float x = 0.5; x < M; x++)
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| 417 | for (float y = 0.5; y < M; y++)
|
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| 418 | {
|
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| 419 | float2 p, tpos;
|
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| 420 | tpos.x = x * width; // 0..1
|
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| 421 | tpos.y = y * width; // 0..1
|
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| 422 |
|
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| 423 | p = tpos.xy;
|
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| 424 | p = 2.0 * p - 1.0; //-1..1
|
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| 425 |
|
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| 426 | L1 = float3(1, p.x - width, p.y - width);
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| 427 | L2 = float3(1, p.x + width, p.y - width);
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| 428 | L3 = float3(1, p.x + width, p.y + width);
|
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| 429 | L4 = float3(1, p.x - width, p.y + width);
|
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| 430 | L = float3(1, p.x, p.y);
|
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| 431 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
|
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| 432 |
|
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| 433 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
|
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| 434 | }
|
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| 435 |
|
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| 436 | for (float x = 0.5; x < M; x++)
|
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| 437 | for (float y = 0.5; y < M; y++)
|
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| 438 | {
|
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| 439 | float2 p, tpos;
|
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| 440 | tpos.x = x * width; // 0..1
|
---|
| 441 | tpos.y = y * width; // 0..1
|
---|
| 442 |
|
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| 443 | p = tpos.xy;
|
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| 444 | p = 2.0 * p - 1.0; //-1..1
|
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| 445 |
|
---|
| 446 | L4 = float3(-1, p.x - width, p.y - width);
|
---|
| 447 | L3 = float3(-1, p.x + width, p.y - width);
|
---|
| 448 | L2 = float3(-1, p.x + width, p.y + width);
|
---|
| 449 | L1 = float3(-1, p.x - width, p.y + width);
|
---|
| 450 | L = float3(-1, p.x, p.y);
|
---|
| 451 | Le = float4(readCubeMap(SmallEnvMapSampler, L).rgb, 1);
|
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| 452 |
|
---|
| 453 | I += 0.5 * Le * GetContibution( L, L1, L2, L3, L4, pos, N, DistanceEnvMapSampler);
|
---|
| 454 | }
|
---|
| 455 | float kd = 0.3;
|
---|
| 456 | return kd * I;
|
---|
| 457 | }
|
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| 458 |
|
---|
[1590] | 459 | float4 P2PContr(float3 N, float3 Nl, float3 pos, float3 L, samplerCUBE cubemap, samplerCUBE distmap)
|
---|
[1535] | 460 | {
|
---|
[1590] | 461 | Nl = normalize(Nl);
|
---|
| 462 | L = normalize(L);
|
---|
| 463 | float4 Le = readCubeMap(cubemap, L);
|
---|
| 464 | float d = readDistanceCubeMap(distmap, L);
|
---|
| 465 | float3 Lpos = L * d;
|
---|
| 466 | float3 Ldir = Lpos - pos;
|
---|
[1671] | 467 | float dist = 4 * dot(Ldir, Ldir);
|
---|
[1590] | 468 | Ldir = normalize(Ldir);
|
---|
[1671] | 469 |
|
---|
| 470 | return Le * (max(dot(N, Ldir),0) * dot(Nl, -1 * Ldir)) / dist;
|
---|
[1590] | 471 | }
|
---|
[1535] | 472 |
|
---|
[1590] | 473 | float4 EnvMapDiffuseP2PPS( vertOUT IN,
|
---|
| 474 | uniform float3 lastCenter, //LI//
|
---|
| 475 | uniform samplerCUBE SmallEnvMapSampler : register(s0),
|
---|
| 476 | uniform samplerCUBE DistanceEnvMapSampler : register(s1)) : COLOR
|
---|
| 477 | {
|
---|
| 478 | float M = 4.0;
|
---|
| 479 |
|
---|
| 480 | float3 N = IN.mNormal;
|
---|
| 481 | N = normalize( N );
|
---|
| 482 | float3 pos = IN.wPos - lastCenter;
|
---|
| 483 |
|
---|
| 484 | float4 I = 0;
|
---|
| 485 | float3 L;
|
---|
| 486 | float4 Le;
|
---|
| 487 | float width = 1.0 / M;
|
---|
[1671] | 488 | float d;
|
---|
[1590] | 489 |
|
---|
[1671] | 490 | float kd = 0.3;
|
---|
[1590] | 491 |
|
---|
[1671] | 492 | //return kd * readCubeMap(SmallEnvMapSampler, N) + lastCenter.x * 0.00000001;
|
---|
| 493 |
|
---|
[1590] | 494 | for (float x = 0.5; x < M; x++)
|
---|
| 495 | for (float y = 0.5; y < M; y++)
|
---|
| 496 | {
|
---|
| 497 | float2 p, tpos;
|
---|
| 498 | tpos.x = x * width;
|
---|
| 499 | tpos.y = y * width;
|
---|
| 500 |
|
---|
| 501 | p = tpos.xy;
|
---|
| 502 | p = 2.0 * p - 1.0; //-1..1
|
---|
| 503 |
|
---|
| 504 | I += P2PContr(N, float3(0,0,-1), pos, float3(p.x, p.y, 1), SmallEnvMapSampler, DistanceEnvMapSampler);
|
---|
| 505 | I += P2PContr(N, float3(0,0,1), pos, float3(-p.x, p.y, -1), SmallEnvMapSampler, DistanceEnvMapSampler);
|
---|
| 506 | I += P2PContr(N, float3(-1,0,0), pos, float3(1, p.y, -p.x), SmallEnvMapSampler, DistanceEnvMapSampler);
|
---|
| 507 | I += P2PContr(N, float3(1,0,0), pos, float3(-1, p.y, p.x), SmallEnvMapSampler, DistanceEnvMapSampler);
|
---|
| 508 | I += P2PContr(N, float3(0,-1,0), pos, float3(p.x, 1, -p.y), SmallEnvMapSampler, DistanceEnvMapSampler);
|
---|
| 509 | I += P2PContr(N, float3(0,1,0), pos, float3(p.x, -1, p.y), SmallEnvMapSampler, DistanceEnvMapSampler);
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | return kd * I;
|
---|
[1519] | 513 | } |
---|