declare const _default: "\n\n#ifdef STD_REFRACTION_CONSTANT\nuniform float material_refraction;\n#endif\n\nvoid getRefraction() {\n    float refraction = 1.0;\n\n    #ifdef STD_REFRACTION_CONSTANT\n    refraction = material_refraction;\n    #endif\n\n    #ifdef STD_REFRACTION_TEXTURE\n    refraction *= texture2DBias({STD_REFRACTION_TEXTURE_NAME}, {STD_REFRACTION_TEXTURE_UV}, textureBias).{STD_REFRACTION_TEXTURE_CHANNEL};\n    #endif\n\n    #ifdef STD_REFRACTION_VERTEX\n    refraction *= saturate(vVertexColor.{STD_REFRACTION_VERTEX_CHANNEL});\n    #endif\n\n    dTransmission = refraction;\n}\n";
export default _default;