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- {"ast":null,"code":"// Do not edit.\nimport { ShaderStore } from \"../../Engines/shaderStore.js\";\nconst name = \"hdrFilteringFunctions\";\nconst shader = `#ifdef NUM_SAMPLES\n#if NUM_SAMPLES>0\n#if defined(WEBGL2) || defined(WEBGPU) || defined(NATIVE)\nfloat radicalInverse_VdC(uint bits) \n{bits=(bits<<16u) | (bits>>16u);bits=((bits & 0x55555555u)<<1u) | ((bits & 0xAAAAAAAAu)>>1u);bits=((bits & 0x33333333u)<<2u) | ((bits & 0xCCCCCCCCu)>>2u);bits=((bits & 0x0F0F0F0Fu)<<4u) | ((bits & 0xF0F0F0F0u)>>4u);bits=((bits & 0x00FF00FFu)<<8u) | ((bits & 0xFF00FF00u)>>8u);return float(bits)*2.3283064365386963e-10; }\nvec2 hammersley(uint i,uint N)\n{return vec2(float(i)/float(N),radicalInverse_VdC(i));}\n#else\nfloat vanDerCorpus(int n,int base)\n{float invBase=1.0/float(base);float denom =1.0;float result =0.0;for(int i=0; i<32; ++i)\n{if(n>0)\n{denom =mod(float(n),2.0);result+=denom*invBase;invBase=invBase/2.0;n =int(float(n)/2.0);}}\nreturn result;}\nvec2 hammersley(int i,int N)\n{return vec2(float(i)/float(N),vanDerCorpus(i,2));}\n#endif\nfloat log4(float x) {return log2(x)/2.;}\nconst float NUM_SAMPLES_FLOAT=float(NUM_SAMPLES);const float NUM_SAMPLES_FLOAT_INVERSED=1./NUM_SAMPLES_FLOAT;const float K=4.;\n#define inline\nvec3 irradiance(samplerCube inputTexture,vec3 inputN,vec2 filteringInfo)\n{vec3 n=normalize(inputN);vec3 result=vec3(0.0);vec3 tangent=abs(n.z)<0.999 ? vec3(0.,0.,1.) : vec3(1.,0.,0.);tangent=normalize(cross(tangent,n));vec3 bitangent=cross(n,tangent);mat3 tbn=mat3(tangent,bitangent,n);float maxLevel=filteringInfo.y;float dim0=filteringInfo.x;float omegaP=(4.*PI)/(6.*dim0*dim0);\n#if defined(WEBGL2) || defined(WEBGPU) || defined(NATIVE)\nfor(uint i=0u; i<NUM_SAMPLES; ++i)\n#else\nfor(int i=0; i<NUM_SAMPLES; ++i)\n#endif\n{vec2 Xi=hammersley(i,NUM_SAMPLES);vec3 Ls=hemisphereCosSample(Xi);Ls=normalize(Ls);vec3 Ns=vec3(0.,0.,1.);float NoL=dot(Ns,Ls);if (NoL>0.) {float pdf_inversed=PI/NoL;float omegaS=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;float l=log4(omegaS)-log4(omegaP)+log4(K);float mipLevel=clamp(l,0.0,maxLevel);vec3 c=textureCubeLodEXT(inputTexture,tbn*Ls,mipLevel).rgb;\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nresult+=c;}}\nresult=result*NUM_SAMPLES_FLOAT_INVERSED;return result;}\n#define inline\nvec3 radiance(float alphaG,samplerCube inputTexture,vec3 inputN,vec2 filteringInfo)\n{vec3 n=normalize(inputN);vec3 c=textureCube(inputTexture,n).rgb; \nif (alphaG==0.) {\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nreturn c;} else {vec3 result=vec3(0.);vec3 tangent=abs(n.z)<0.999 ? vec3(0.,0.,1.) : vec3(1.,0.,0.);tangent=normalize(cross(tangent,n));vec3 bitangent=cross(n,tangent);mat3 tbn=mat3(tangent,bitangent,n);float maxLevel=filteringInfo.y;float dim0=filteringInfo.x;float omegaP=(4.*PI)/(6.*dim0*dim0);float weight=0.;\n#if defined(WEBGL2) || defined(WEBGPU) || defined(NATIVE)\nfor(uint i=0u; i<NUM_SAMPLES; ++i)\n#else\nfor(int i=0; i<NUM_SAMPLES; ++i)\n#endif\n{vec2 Xi=hammersley(i,NUM_SAMPLES);vec3 H=hemisphereImportanceSampleDggx(Xi,alphaG);float NoV=1.;float NoH=H.z;float NoH2=H.z*H.z;float NoL=2.*NoH2-1.;vec3 L=vec3(2.*NoH*H.x,2.*NoH*H.y,NoL);L=normalize(L);if (NoL>0.) {float pdf_inversed=4./normalDistributionFunction_TrowbridgeReitzGGX(NoH,alphaG);float omegaS=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;float l=log4(omegaS)-log4(omegaP)+log4(K);float mipLevel=clamp(float(l),0.0,maxLevel);weight+=NoL;vec3 c=textureCubeLodEXT(inputTexture,tbn*L,mipLevel).rgb;\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nresult+=c*NoL;}}\nresult=result/weight;return result;}}\n#endif\n#endif\n`;\n// Sideeffect\nShaderStore.IncludesShadersStore[name] = shader;\n/** @internal */\nexport const hdrFilteringFunctions = {\n name,\n shader\n};","map":{"version":3,"names":["ShaderStore","name","shader","IncludesShadersStore","hdrFilteringFunctions"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Shaders/ShadersInclude/hdrFilteringFunctions.js"],"sourcesContent":["// Do not edit.\nimport { ShaderStore } from \"../../Engines/shaderStore.js\";\nconst name = \"hdrFilteringFunctions\";\nconst shader = `#ifdef NUM_SAMPLES\n#if NUM_SAMPLES>0\n#if defined(WEBGL2) || defined(WEBGPU) || defined(NATIVE)\nfloat radicalInverse_VdC(uint bits) \n{bits=(bits<<16u) | (bits>>16u);bits=((bits & 0x55555555u)<<1u) | ((bits & 0xAAAAAAAAu)>>1u);bits=((bits & 0x33333333u)<<2u) | ((bits & 0xCCCCCCCCu)>>2u);bits=((bits & 0x0F0F0F0Fu)<<4u) | ((bits & 0xF0F0F0F0u)>>4u);bits=((bits & 0x00FF00FFu)<<8u) | ((bits & 0xFF00FF00u)>>8u);return float(bits)*2.3283064365386963e-10; }\nvec2 hammersley(uint i,uint N)\n{return vec2(float(i)/float(N),radicalInverse_VdC(i));}\n#else\nfloat vanDerCorpus(int n,int base)\n{float invBase=1.0/float(base);float denom =1.0;float result =0.0;for(int i=0; i<32; ++i)\n{if(n>0)\n{denom =mod(float(n),2.0);result+=denom*invBase;invBase=invBase/2.0;n =int(float(n)/2.0);}}\nreturn result;}\nvec2 hammersley(int i,int N)\n{return vec2(float(i)/float(N),vanDerCorpus(i,2));}\n#endif\nfloat log4(float x) {return log2(x)/2.;}\nconst float NUM_SAMPLES_FLOAT=float(NUM_SAMPLES);const float NUM_SAMPLES_FLOAT_INVERSED=1./NUM_SAMPLES_FLOAT;const float K=4.;\n#define inline\nvec3 irradiance(samplerCube inputTexture,vec3 inputN,vec2 filteringInfo)\n{vec3 n=normalize(inputN);vec3 result=vec3(0.0);vec3 tangent=abs(n.z)<0.999 ? vec3(0.,0.,1.) : vec3(1.,0.,0.);tangent=normalize(cross(tangent,n));vec3 bitangent=cross(n,tangent);mat3 tbn=mat3(tangent,bitangent,n);float maxLevel=filteringInfo.y;float dim0=filteringInfo.x;float omegaP=(4.*PI)/(6.*dim0*dim0);\n#if defined(WEBGL2) || defined(WEBGPU) || defined(NATIVE)\nfor(uint i=0u; i<NUM_SAMPLES; ++i)\n#else\nfor(int i=0; i<NUM_SAMPLES; ++i)\n#endif\n{vec2 Xi=hammersley(i,NUM_SAMPLES);vec3 Ls=hemisphereCosSample(Xi);Ls=normalize(Ls);vec3 Ns=vec3(0.,0.,1.);float NoL=dot(Ns,Ls);if (NoL>0.) {float pdf_inversed=PI/NoL;float omegaS=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;float l=log4(omegaS)-log4(omegaP)+log4(K);float mipLevel=clamp(l,0.0,maxLevel);vec3 c=textureCubeLodEXT(inputTexture,tbn*Ls,mipLevel).rgb;\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nresult+=c;}}\nresult=result*NUM_SAMPLES_FLOAT_INVERSED;return result;}\n#define inline\nvec3 radiance(float alphaG,samplerCube inputTexture,vec3 inputN,vec2 filteringInfo)\n{vec3 n=normalize(inputN);vec3 c=textureCube(inputTexture,n).rgb; \nif (alphaG==0.) {\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nreturn c;} else {vec3 result=vec3(0.);vec3 tangent=abs(n.z)<0.999 ? vec3(0.,0.,1.) : vec3(1.,0.,0.);tangent=normalize(cross(tangent,n));vec3 bitangent=cross(n,tangent);mat3 tbn=mat3(tangent,bitangent,n);float maxLevel=filteringInfo.y;float dim0=filteringInfo.x;float omegaP=(4.*PI)/(6.*dim0*dim0);float weight=0.;\n#if defined(WEBGL2) || defined(WEBGPU) || defined(NATIVE)\nfor(uint i=0u; i<NUM_SAMPLES; ++i)\n#else\nfor(int i=0; i<NUM_SAMPLES; ++i)\n#endif\n{vec2 Xi=hammersley(i,NUM_SAMPLES);vec3 H=hemisphereImportanceSampleDggx(Xi,alphaG);float NoV=1.;float NoH=H.z;float NoH2=H.z*H.z;float NoL=2.*NoH2-1.;vec3 L=vec3(2.*NoH*H.x,2.*NoH*H.y,NoL);L=normalize(L);if (NoL>0.) {float pdf_inversed=4./normalDistributionFunction_TrowbridgeReitzGGX(NoH,alphaG);float omegaS=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;float l=log4(omegaS)-log4(omegaP)+log4(K);float mipLevel=clamp(float(l),0.0,maxLevel);weight+=NoL;vec3 c=textureCubeLodEXT(inputTexture,tbn*L,mipLevel).rgb;\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nresult+=c*NoL;}}\nresult=result/weight;return result;}}\n#endif\n#endif\n`;\n// Sideeffect\nShaderStore.IncludesShadersStore[name] = shader;\n/** @internal */\nexport const hdrFilteringFunctions = { name, shader };\n"],"mappings":"AAAA;AACA,SAASA,WAAW,QAAQ,8BAA8B;AAC1D,MAAMC,IAAI,GAAG,uBAAuB;AACpC,MAAMC,MAAM,GAAG;AACf;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,CAAC;AACD;AACAF,WAAW,CAACG,oBAAoB,CAACF,IAAI,CAAC,GAAGC,MAAM;AAC/C;AACA,OAAO,MAAME,qBAAqB,GAAG;EAAEH,IAAI;EAAEC;AAAO,CAAC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}
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