@babylonjs/viewer/dist/chunks/iblCdfy.fragment-CIerIK0A.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 e}from"./index-Bw2N6w1y.esm.min.js";import"./helperFunctions-VdqKNhfd.esm.min.js";const n="iblCdfyPixelShader",i="precision highp sampler2D;precision highp samplerCube;\n#include<helperFunctions>\n#define PI 3.1415927\nvarying vec2 vUV;\n#ifdef IBL_USE_CUBE_MAP\nuniform samplerCube iblSource;\n#else\nuniform sampler2D iblSource;\n#endif\nuniform int iblHeight;\n#ifdef IBL_USE_CUBE_MAP\nfloat fetchCube(vec2 uv) {vec3 direction=equirectangularToCubemapDirection(uv);return sin(PI*uv.y)*dot(textureCubeLodEXT(iblSource,direction,0.0).rgb,LuminanceEncodeApprox);}\n#else\nfloat fetchPanoramic(ivec2 Coords,float envmapHeight) {return sin(PI*(float(Coords.y)+0.5)/envmapHeight) *\ndot(texelFetch(iblSource,Coords,0).rgb,LuminanceEncodeApprox);}\n#endif\nvoid main(void) {ivec2 coords=ivec2(gl_FragCoord.x,gl_FragCoord.y);float cdfy=0.0;for (int y=1; y<=coords.y; y++) {\n#ifdef IBL_USE_CUBE_MAP\nvec2 uv=vec2(vUV.x,(float(y-1)+0.5)/float(iblHeight));cdfy+=fetchCube(uv);\n#else\ncdfy+=fetchPanoramic(ivec2(coords.x,y-1),float(iblHeight));\n#endif\n}\ngl_FragColor=vec4(cdfy,0.0,0.0,1.0);}";e.ShadersStore[n]||(e.ShadersStore[n]=i);const o={name:n,shader:i};export{o as iblCdfyPixelShader};
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