@babylonjs/viewer/dist/chunks/fogFragment-B-gxjitm.esm.min.js

The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.

import{S as o}from"./index-Bw2N6w1y.esm.min.js";const n="fogFragmentDeclaration";o.IncludesShadersStore[n]||(o.IncludesShadersStore[n]="#ifdef FOG\n#define FOGMODE_NONE 0.\n#define FOGMODE_EXP 1.\n#define FOGMODE_EXP2 2.\n#define FOGMODE_LINEAR 3.\n#define E 2.71828\nuniform vec4 vFogInfos;uniform vec3 vFogColor;varying vec3 vFogDistance;float CalcFogFactor()\n{float fogCoeff=1.0;float fogStart=vFogInfos.y;float fogEnd=vFogInfos.z;float fogDensity=vFogInfos.w;float fogDistance=length(vFogDistance);if (FOGMODE_LINEAR==vFogInfos.x)\n{fogCoeff=(fogEnd-fogDistance)/(fogEnd-fogStart);}\nelse if (FOGMODE_EXP==vFogInfos.x)\n{fogCoeff=1.0/pow(E,fogDistance*fogDensity);}\nelse if (FOGMODE_EXP2==vFogInfos.x)\n{fogCoeff=1.0/pow(E,fogDistance*fogDistance*fogDensity*fogDensity);}\nreturn clamp(fogCoeff,0.0,1.0);}\n#endif\n");const e="logDepthFragment";o.IncludesShadersStore[e]||(o.IncludesShadersStore[e]="#ifdef LOGARITHMICDEPTH\ngl_FragDepthEXT=log2(vFragmentDepth)*logarithmicDepthConstant*0.5;\n#endif\n");const f="fogFragment";o.IncludesShadersStore[f]||(o.IncludesShadersStore[f]="#ifdef FOG\nfloat fog=CalcFogFactor();\n#ifdef PBR\nfog=toLinearSpace(fog);\n#endif\ncolor.rgb=mix(vFogColor,color.rgb,fog);\n#endif\n");
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