{"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\nfn radicalInverse_VdC(value: u32)->f32 \n{var bits=(value<<16u) | (value>>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 f32(bits)*2.3283064365386963e-10; }\nfn hammersley(i: u32,N: u32)->vec2f\n{return vec2f( f32(i)/ f32(N),radicalInverse_VdC(i));}\nfn log4(x: f32)->f32 {return log2(x)/2.;}\nconst NUM_SAMPLES_FLOAT: f32= f32(NUM_SAMPLES);const NUM_SAMPLES_FLOAT_INVERSED: f32=1./NUM_SAMPLES_FLOAT;const K: f32=4.;fn irradiance(inputTexture: texture_cube<f32>,inputSampler: sampler,inputN: vec3f,filteringInfo: vec2f)->vec3f\n{var n: vec3f=normalize(inputN);var result: vec3f= vec3f(0.0);var tangent: vec3f=select(vec3f(1.,0.,0.),vec3f(0.,0.,1.),abs(n.z)<0.999);tangent=normalize(cross(tangent,n));var bitangent: vec3f=cross(n,tangent);var tbn: mat3x3f= mat3x3f(tangent,bitangent,n);var maxLevel: f32=filteringInfo.y;var dim0: f32=filteringInfo.x;var omegaP: f32=(4.*PI)/(6.*dim0*dim0);for(var i: u32=0u; i<NUM_SAMPLES; i++)\n{var Xi: vec2f=hammersley(i,NUM_SAMPLES);var Ls: vec3f=hemisphereCosSample(Xi);Ls=normalize(Ls);var Ns: vec3f= vec3f(0.,0.,1.);var NoL: f32=dot(Ns,Ls);if (NoL>0.) {var pdf_inversed: f32=PI/NoL;var omegaS: f32=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;var l: f32=log4(omegaS)-log4(omegaP)+log4(K);var mipLevel: f32=clamp(l,0.0,maxLevel);var c: vec3f=textureSampleLevel(inputTexture,inputSampler,tbn*Ls,mipLevel).rgb;\n#ifdef GAMMA_INPUT\nc=toLinearSpaceVec3(c);\n#endif\nresult+=c;}}\nresult=result*NUM_SAMPLES_FLOAT_INVERSED;return result;}\nfn radiance(alphaG: f32,inputTexture: texture_cube<f32>,inputSampler: sampler,inputN: vec3f,filteringInfo: vec2f)->vec3f\n{var n: vec3f=normalize(inputN);var c: vec3f=textureSample(inputTexture,inputSampler,n).rgb; \nif (alphaG==0.) {\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nreturn c;} else {var result: vec3f= vec3f(0.);var tangent: vec3f=select(vec3f(1.,0.,0.),vec3f(0.,0.,1.),abs(n.z)<0.999);tangent=normalize(cross(tangent,n));var bitangent: vec3f=cross(n,tangent);var tbn: mat3x3f= mat3x3f(tangent,bitangent,n);var maxLevel: f32=filteringInfo.y;var dim0: f32=filteringInfo.x;var omegaP: f32=(4.*PI)/(6.*dim0*dim0);var weight: f32=0.;for(var i: u32=0u; i<NUM_SAMPLES; i++)\n{var Xi: vec2f=hammersley(i,NUM_SAMPLES);var H: vec3f=hemisphereImportanceSampleDggx(Xi,alphaG);var NoV: f32=1.;var NoH: f32=H.z;var NoH2: f32=H.z*H.z;var NoL: f32=2.*NoH2-1.;var L: vec3f= vec3f(2.*NoH*H.x,2.*NoH*H.y,NoL);L=normalize(L);if (NoL>0.) {var pdf_inversed: f32=4./normalDistributionFunction_TrowbridgeReitzGGX(NoH,alphaG);var omegaS: f32=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;var l: f32=log4(omegaS)-log4(omegaP)+log4(K);var mipLevel: f32=clamp( f32(l),0.0,maxLevel);weight+=NoL;var c: vec3f=textureSampleLevel(inputTexture,inputSampler,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.IncludesShadersStoreWGSL[name] = shader;\n/** @internal */\nexport const hdrFilteringFunctionsWGSL = {\n  name,\n  shader\n};","map":{"version":3,"names":["ShaderStore","name","shader","IncludesShadersStoreWGSL","hdrFilteringFunctionsWGSL"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/ShadersWGSL/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\nfn radicalInverse_VdC(value: u32)->f32 \n{var bits=(value<<16u) | (value>>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 f32(bits)*2.3283064365386963e-10; }\nfn hammersley(i: u32,N: u32)->vec2f\n{return vec2f( f32(i)/ f32(N),radicalInverse_VdC(i));}\nfn log4(x: f32)->f32 {return log2(x)/2.;}\nconst NUM_SAMPLES_FLOAT: f32= f32(NUM_SAMPLES);const NUM_SAMPLES_FLOAT_INVERSED: f32=1./NUM_SAMPLES_FLOAT;const K: f32=4.;fn irradiance(inputTexture: texture_cube<f32>,inputSampler: sampler,inputN: vec3f,filteringInfo: vec2f)->vec3f\n{var n: vec3f=normalize(inputN);var result: vec3f= vec3f(0.0);var tangent: vec3f=select(vec3f(1.,0.,0.),vec3f(0.,0.,1.),abs(n.z)<0.999);tangent=normalize(cross(tangent,n));var bitangent: vec3f=cross(n,tangent);var tbn: mat3x3f= mat3x3f(tangent,bitangent,n);var maxLevel: f32=filteringInfo.y;var dim0: f32=filteringInfo.x;var omegaP: f32=(4.*PI)/(6.*dim0*dim0);for(var i: u32=0u; i<NUM_SAMPLES; i++)\n{var Xi: vec2f=hammersley(i,NUM_SAMPLES);var Ls: vec3f=hemisphereCosSample(Xi);Ls=normalize(Ls);var Ns: vec3f= vec3f(0.,0.,1.);var NoL: f32=dot(Ns,Ls);if (NoL>0.) {var pdf_inversed: f32=PI/NoL;var omegaS: f32=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;var l: f32=log4(omegaS)-log4(omegaP)+log4(K);var mipLevel: f32=clamp(l,0.0,maxLevel);var c: vec3f=textureSampleLevel(inputTexture,inputSampler,tbn*Ls,mipLevel).rgb;\n#ifdef GAMMA_INPUT\nc=toLinearSpaceVec3(c);\n#endif\nresult+=c;}}\nresult=result*NUM_SAMPLES_FLOAT_INVERSED;return result;}\nfn radiance(alphaG: f32,inputTexture: texture_cube<f32>,inputSampler: sampler,inputN: vec3f,filteringInfo: vec2f)->vec3f\n{var n: vec3f=normalize(inputN);var c: vec3f=textureSample(inputTexture,inputSampler,n).rgb; \nif (alphaG==0.) {\n#ifdef GAMMA_INPUT\nc=toLinearSpace(c);\n#endif\nreturn c;} else {var result: vec3f= vec3f(0.);var tangent: vec3f=select(vec3f(1.,0.,0.),vec3f(0.,0.,1.),abs(n.z)<0.999);tangent=normalize(cross(tangent,n));var bitangent: vec3f=cross(n,tangent);var tbn: mat3x3f= mat3x3f(tangent,bitangent,n);var maxLevel: f32=filteringInfo.y;var dim0: f32=filteringInfo.x;var omegaP: f32=(4.*PI)/(6.*dim0*dim0);var weight: f32=0.;for(var i: u32=0u; i<NUM_SAMPLES; i++)\n{var Xi: vec2f=hammersley(i,NUM_SAMPLES);var H: vec3f=hemisphereImportanceSampleDggx(Xi,alphaG);var NoV: f32=1.;var NoH: f32=H.z;var NoH2: f32=H.z*H.z;var NoL: f32=2.*NoH2-1.;var L: vec3f= vec3f(2.*NoH*H.x,2.*NoH*H.y,NoL);L=normalize(L);if (NoL>0.) {var pdf_inversed: f32=4./normalDistributionFunction_TrowbridgeReitzGGX(NoH,alphaG);var omegaS: f32=NUM_SAMPLES_FLOAT_INVERSED*pdf_inversed;var l: f32=log4(omegaS)-log4(omegaP)+log4(K);var mipLevel: f32=clamp( f32(l),0.0,maxLevel);weight+=NoL;var c: vec3f=textureSampleLevel(inputTexture,inputSampler,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.IncludesShadersStoreWGSL[name] = shader;\n/** @internal */\nexport const hdrFilteringFunctionsWGSL = { 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,CAAC;AACD;AACAF,WAAW,CAACG,wBAAwB,CAACF,IAAI,CAAC,GAAGC,MAAM;AACnD;AACA,OAAO,MAAME,yBAAyB,GAAG;EAAEH,IAAI;EAAEC;AAAO,CAAC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}