{"ast":null,"code":"// Do not edit.\nimport { ShaderStore } from \"../../Engines/shaderStore.js\";\nconst name = \"pbrDirectLightingFalloffFunctions\";\nconst shader = `float computeDistanceLightFalloff_Standard(vec3 lightOffset,float range)\n{return max(0.,1.0-length(lightOffset)/range);}\nfloat computeDistanceLightFalloff_Physical(float lightDistanceSquared)\n{return 1.0/maxEps(lightDistanceSquared);}\nfloat computeDistanceLightFalloff_GLTF(float lightDistanceSquared,float inverseSquaredRange)\n{float lightDistanceFalloff=1.0/maxEps(lightDistanceSquared);float factor=lightDistanceSquared*inverseSquaredRange;float attenuation=saturate(1.0-factor*factor);attenuation*=attenuation;lightDistanceFalloff*=attenuation;return lightDistanceFalloff;}\nfloat computeDistanceLightFalloff(vec3 lightOffset,float lightDistanceSquared,float range,float inverseSquaredRange)\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}\nfloat computeDirectionalLightFalloff_Standard(vec3 lightDirection,vec3 directionToLightCenterW,float cosHalfAngle,float exponent)\n{float falloff=0.0;float cosAngle=maxEps(dot(-lightDirection,directionToLightCenterW));if (cosAngle>=cosHalfAngle)\n{falloff=max(0.,pow(cosAngle,exponent));}\nreturn falloff;}\nfloat computeDirectionalLightFalloff_Physical(vec3 lightDirection,vec3 directionToLightCenterW,float cosHalfAngle)\n{const float kMinusLog2ConeAngleIntensityRatio=6.64385618977; \nfloat concentrationKappa=kMinusLog2ConeAngleIntensityRatio/(1.0-cosHalfAngle);vec4 lightDirectionSpreadSG=vec4(-lightDirection*concentrationKappa,-concentrationKappa);float falloff=exp2(dot(vec4(directionToLightCenterW,1.0),lightDirectionSpreadSG));return falloff;}\nfloat computeDirectionalLightFalloff_GLTF(vec3 lightDirection,vec3 directionToLightCenterW,float lightAngleScale,float lightAngleOffset)\n{float cd=dot(-lightDirection,directionToLightCenterW);float falloff=saturate(cd*lightAngleScale+lightAngleOffset);falloff*=falloff;return falloff;}\nfloat computeDirectionalLightFalloff(vec3 lightDirection,vec3 directionToLightCenterW,float cosHalfAngle,float exponent,float lightAngleScale,float lightAngleOffset)\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.IncludesShadersStore[name] = shader;\n/** @internal */\nexport const pbrDirectLightingFalloffFunctions = {\n  name,\n  shader\n};","map":{"version":3,"names":["ShaderStore","name","shader","IncludesShadersStore","pbrDirectLightingFalloffFunctions"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/Shaders/ShadersInclude/pbrDirectLightingFalloffFunctions.js"],"sourcesContent":["// Do not edit.\nimport { ShaderStore } from \"../../Engines/shaderStore.js\";\nconst name = \"pbrDirectLightingFalloffFunctions\";\nconst shader = `float computeDistanceLightFalloff_Standard(vec3 lightOffset,float range)\n{return max(0.,1.0-length(lightOffset)/range);}\nfloat computeDistanceLightFalloff_Physical(float lightDistanceSquared)\n{return 1.0/maxEps(lightDistanceSquared);}\nfloat computeDistanceLightFalloff_GLTF(float lightDistanceSquared,float inverseSquaredRange)\n{float lightDistanceFalloff=1.0/maxEps(lightDistanceSquared);float factor=lightDistanceSquared*inverseSquaredRange;float attenuation=saturate(1.0-factor*factor);attenuation*=attenuation;lightDistanceFalloff*=attenuation;return lightDistanceFalloff;}\nfloat computeDistanceLightFalloff(vec3 lightOffset,float lightDistanceSquared,float range,float inverseSquaredRange)\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}\nfloat computeDirectionalLightFalloff_Standard(vec3 lightDirection,vec3 directionToLightCenterW,float cosHalfAngle,float exponent)\n{float falloff=0.0;float cosAngle=maxEps(dot(-lightDirection,directionToLightCenterW));if (cosAngle>=cosHalfAngle)\n{falloff=max(0.,pow(cosAngle,exponent));}\nreturn falloff;}\nfloat computeDirectionalLightFalloff_Physical(vec3 lightDirection,vec3 directionToLightCenterW,float cosHalfAngle)\n{const float kMinusLog2ConeAngleIntensityRatio=6.64385618977; \nfloat concentrationKappa=kMinusLog2ConeAngleIntensityRatio/(1.0-cosHalfAngle);vec4 lightDirectionSpreadSG=vec4(-lightDirection*concentrationKappa,-concentrationKappa);float falloff=exp2(dot(vec4(directionToLightCenterW,1.0),lightDirectionSpreadSG));return falloff;}\nfloat computeDirectionalLightFalloff_GLTF(vec3 lightDirection,vec3 directionToLightCenterW,float lightAngleScale,float lightAngleOffset)\n{float cd=dot(-lightDirection,directionToLightCenterW);float falloff=saturate(cd*lightAngleScale+lightAngleOffset);falloff*=falloff;return falloff;}\nfloat computeDirectionalLightFalloff(vec3 lightDirection,vec3 directionToLightCenterW,float cosHalfAngle,float exponent,float lightAngleScale,float lightAngleOffset)\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.IncludesShadersStore[name] = shader;\n/** @internal */\nexport const pbrDirectLightingFalloffFunctions = { 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,oBAAoB,CAACF,IAAI,CAAC,GAAGC,MAAM;AAC/C;AACA,OAAO,MAAME,iCAAiC,GAAG;EAAEH,IAAI;EAAEC;AAAO,CAAC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}