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- {"ast":null,"code":"// Do not edit.\nimport { ShaderStore } from \"../../Engines/shaderStore.js\";\nconst name = \"pbrDirectLightingFalloffFunctions\";\nconst shader = `fn computeDistanceLightFalloff_Standard(lightOffset: vec3f,range: f32)->f32\n{return max(0.,1.0-length(lightOffset)/range);}\nfn computeDistanceLightFalloff_Physical(lightDistanceSquared: f32)->f32\n{return 1.0/maxEps(lightDistanceSquared);}\nfn computeDistanceLightFalloff_GLTF(lightDistanceSquared: f32,inverseSquaredRange: f32)->f32\n{var lightDistanceFalloff: f32=1.0/maxEps(lightDistanceSquared);var factor: f32=lightDistanceSquared*inverseSquaredRange;var attenuation: f32=saturate(1.0-factor*factor);attenuation*=attenuation;lightDistanceFalloff*=attenuation;return lightDistanceFalloff;}\nfn computeDistanceLightFalloff(lightOffset: vec3f,lightDistanceSquared: f32,range: f32,inverseSquaredRange: f32)->f32\n{\n#ifdef USEPHYSICALLIGHTFALLOFF\nreturn computeDistanceLightFalloff_Physical(lightDistanceSquared);\n#elif defined(USEGLTFLIGHTFALLOFF)\nreturn computeDistanceLightFalloff_GLTF(lightDistanceSquared,inverseSquaredRange);\n#else\nreturn computeDistanceLightFalloff_Standard(lightOffset,range);\n#endif\n}\nfn computeDirectionalLightFalloff_Standard(lightDirection: vec3f,directionToLightCenterW: vec3f,cosHalfAngle: f32,exponent: f32)->f32\n{var falloff: f32=0.0;var cosAngle: f32=maxEps(dot(-lightDirection,directionToLightCenterW));if (cosAngle>=cosHalfAngle)\n{falloff=max(0.,pow(cosAngle,exponent));}\nreturn falloff;}\nfn computeDirectionalLightFalloff_Physical(lightDirection: vec3f,directionToLightCenterW: vec3f,cosHalfAngle: f32)->f32\n{const kMinusLog2ConeAngleIntensityRatio: f32=6.64385618977; \nvar concentrationKappa: f32=kMinusLog2ConeAngleIntensityRatio/(1.0-cosHalfAngle);var lightDirectionSpreadSG: vec4f= vec4f(-lightDirection*concentrationKappa,-concentrationKappa);var falloff: f32=exp2(dot( vec4f(directionToLightCenterW,1.0),lightDirectionSpreadSG));return falloff;}\nfn computeDirectionalLightFalloff_GLTF(lightDirection: vec3f,directionToLightCenterW: vec3f,lightAngleScale: f32,lightAngleOffset: f32)->f32\n{var cd: f32=dot(-lightDirection,directionToLightCenterW);var falloff: f32=saturate(cd*lightAngleScale+lightAngleOffset);falloff*=falloff;return falloff;}\nfn computeDirectionalLightFalloff(lightDirection: vec3f,directionToLightCenterW: vec3f,cosHalfAngle: f32,exponent: f32,lightAngleScale: f32,lightAngleOffset: f32)->f32\n{\n#ifdef USEPHYSICALLIGHTFALLOFF\nreturn computeDirectionalLightFalloff_Physical(lightDirection,directionToLightCenterW,cosHalfAngle);\n#elif defined(USEGLTFLIGHTFALLOFF)\nreturn computeDirectionalLightFalloff_GLTF(lightDirection,directionToLightCenterW,lightAngleScale,lightAngleOffset);\n#else\nreturn computeDirectionalLightFalloff_Standard(lightDirection,directionToLightCenterW,cosHalfAngle,exponent);\n#endif\n}`;\n// Sideeffect\nShaderStore.IncludesShadersStoreWGSL[name] = shader;\n/** @internal */\nexport const pbrDirectLightingFalloffFunctionsWGSL = {\n name,\n shader\n};","map":{"version":3,"names":["ShaderStore","name","shader","IncludesShadersStoreWGSL","pbrDirectLightingFalloffFunctionsWGSL"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/ShadersWGSL/ShadersInclude/pbrDirectLightingFalloffFunctions.js"],"sourcesContent":["// Do not edit.\nimport { ShaderStore } from \"../../Engines/shaderStore.js\";\nconst name = \"pbrDirectLightingFalloffFunctions\";\nconst shader = `fn computeDistanceLightFalloff_Standard(lightOffset: vec3f,range: f32)->f32\n{return max(0.,1.0-length(lightOffset)/range);}\nfn computeDistanceLightFalloff_Physical(lightDistanceSquared: f32)->f32\n{return 1.0/maxEps(lightDistanceSquared);}\nfn computeDistanceLightFalloff_GLTF(lightDistanceSquared: f32,inverseSquaredRange: f32)->f32\n{var lightDistanceFalloff: f32=1.0/maxEps(lightDistanceSquared);var factor: f32=lightDistanceSquared*inverseSquaredRange;var attenuation: f32=saturate(1.0-factor*factor);attenuation*=attenuation;lightDistanceFalloff*=attenuation;return lightDistanceFalloff;}\nfn computeDistanceLightFalloff(lightOffset: vec3f,lightDistanceSquared: f32,range: f32,inverseSquaredRange: f32)->f32\n{\n#ifdef USEPHYSICALLIGHTFALLOFF\nreturn computeDistanceLightFalloff_Physical(lightDistanceSquared);\n#elif defined(USEGLTFLIGHTFALLOFF)\nreturn computeDistanceLightFalloff_GLTF(lightDistanceSquared,inverseSquaredRange);\n#else\nreturn computeDistanceLightFalloff_Standard(lightOffset,range);\n#endif\n}\nfn computeDirectionalLightFalloff_Standard(lightDirection: vec3f,directionToLightCenterW: vec3f,cosHalfAngle: f32,exponent: f32)->f32\n{var falloff: f32=0.0;var cosAngle: f32=maxEps(dot(-lightDirection,directionToLightCenterW));if (cosAngle>=cosHalfAngle)\n{falloff=max(0.,pow(cosAngle,exponent));}\nreturn falloff;}\nfn computeDirectionalLightFalloff_Physical(lightDirection: vec3f,directionToLightCenterW: vec3f,cosHalfAngle: f32)->f32\n{const kMinusLog2ConeAngleIntensityRatio: f32=6.64385618977; \nvar concentrationKappa: f32=kMinusLog2ConeAngleIntensityRatio/(1.0-cosHalfAngle);var lightDirectionSpreadSG: vec4f= vec4f(-lightDirection*concentrationKappa,-concentrationKappa);var falloff: f32=exp2(dot( vec4f(directionToLightCenterW,1.0),lightDirectionSpreadSG));return falloff;}\nfn computeDirectionalLightFalloff_GLTF(lightDirection: vec3f,directionToLightCenterW: vec3f,lightAngleScale: f32,lightAngleOffset: f32)->f32\n{var cd: f32=dot(-lightDirection,directionToLightCenterW);var falloff: f32=saturate(cd*lightAngleScale+lightAngleOffset);falloff*=falloff;return falloff;}\nfn computeDirectionalLightFalloff(lightDirection: vec3f,directionToLightCenterW: vec3f,cosHalfAngle: f32,exponent: f32,lightAngleScale: f32,lightAngleOffset: f32)->f32\n{\n#ifdef USEPHYSICALLIGHTFALLOFF\nreturn computeDirectionalLightFalloff_Physical(lightDirection,directionToLightCenterW,cosHalfAngle);\n#elif defined(USEGLTFLIGHTFALLOFF)\nreturn computeDirectionalLightFalloff_GLTF(lightDirection,directionToLightCenterW,lightAngleScale,lightAngleOffset);\n#else\nreturn computeDirectionalLightFalloff_Standard(lightDirection,directionToLightCenterW,cosHalfAngle,exponent);\n#endif\n}`;\n// Sideeffect\nShaderStore.IncludesShadersStoreWGSL[name] = shader;\n/** @internal */\nexport const pbrDirectLightingFalloffFunctionsWGSL = { name, shader };\n"],"mappings":"AAAA;AACA,SAASA,WAAW,QAAQ,8BAA8B;AAC1D,MAAMC,IAAI,GAAG,mCAAmC;AAChD,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,EAAE;AACF;AACAF,WAAW,CAACG,wBAAwB,CAACF,IAAI,CAAC,GAAGC,MAAM;AACnD;AACA,OAAO,MAAME,qCAAqC,GAAG;EAAEH,IAAI;EAAEC;AAAO,CAAC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}
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