TC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3( 0, 1, 0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColorBlended * t2.x + ( material.specularF90 - material.specularColorBlended ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseContribution * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t\t#ifdef USE_CLEARCOAT\n\t\t\tvec3 Ncc = geometryClearcoatNormal;\n\t\t\tvec2 uvClearcoat = LTC_Uv( Ncc, viewDir, material.clearcoatRoughness );\n\t\t\tvec4 t1Clearcoat = texture2D( ltc_1, uvClearcoat );\n\t\t\tvec4 t2Clearcoat = texture2D( ltc_2, uvClearcoat );\n\t\t\tmat3 mInvClearcoat = mat3(\n\t\t\t\tvec3( t1Clearcoat.x, 0, t1Clearcoat.y ),\n\t\t\t\tvec3( 0, 1, 0 ),\n\t\t\t\tvec3( t1Clearcoat.z, 0, t1Clearcoat.w )\n\t\t\t);\n\t\t\tvec3 fresnelClearcoat = material.clearcoatF0 * t2Clearcoat.x + ( material.clearcoatF90 - material.clearcoatF0 ) * t2Clearcoat.y;\n\t\t\tclearcoatSpecularDirect += lightColor * fresnelClearcoat * LTC_Evaluate( Ncc, viewDir, position, mInvClearcoat, rectCoords );\n\t\t#endif\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNLcc = saturate( dot( geometryClearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = dotNLcc * directLight.color;\n\t\tclearcoatSpecularDirect += ccIrradiance * BRDF_GGX_Clearcoat( directLight.direction, geometryViewDir, geometryClearcoatNormal, material );\n\t#endif\n\t#ifdef USE_SHEEN\n \n \t\tsheenSpecularDirect += irradiance * BRDF_Sheen( directLight.direction, geometryViewDir, geometryNormal, material.sheenColor, material.sheenRoughness );\n \n \t\tfloat sheenAlbedoV = IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );\n \t\tfloat sheenAlbedoL = IBLSheenBRDF( geometryNormal, directLight.direction, material.sheenRoughness );\n \n \t\tfloat sheenEnergyComp = 1.0 - max3( material.sheenColor ) * max( sheenAlbedoV, sheenAlbedoL );\n \n \t\tirradiance *= sheenEnergyComp;\n \n \t#endif\n\tvec3 specularBRDF = BRDF_GGX( directLight.direction, geometryViewDir, geometryNormal, material );\n\t#ifdef USE_RETROREFLECTION\n\t\tvec3 retroViewDir = reflect( - geometryViewDir, geometryNormal );\n\t\tvec3 retroSpecularBRDF = BRDF_GGX( directLight.direction, retroViewDir, geometryNormal, material );\n\t\tspecularBRDF = mix( specularBRDF, retroSpecularBRDF, saturate( material.retroreflectivity ) );\n\t#endif\n\treflectedLight.directSpecular += irradiance * specularBRDF * material.multiScatteringCompensation;\n\tvec3 halfDir = normalize( directLight.direction + geometryViewDir );\n\tfloat dotVH = saturate( dot( geometryViewDir, halfDir ) );\n\tvec3 F = F_Schlick( material.specularColor, material.specularF90, dotVH );\n\t#ifdef USE_RETROREFLECTION\n\t\tvec3 retroHalfDir = normalize( directLight.direction + retroViewDir );\n\t\tfloat dotRetroVH = saturate( dot( retroViewDir, retroHalfDir ) );\n\t\tvec3 retroF = F_Schlick( material.specularColor, material.specularF90, dotRetroVH );\n\t\tF = mix( F, retroF, saturate( material.retroreflectivity ) );\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseContribution ) * ( 1.0 - F );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\t#ifdef USE_IRIDESCENCE\n\t\tcomputeMultiscatteringIridescence( material.dfg, material.specularColor, material.specularF90, material.iridescence, material.iridescenceF0Dielectric, singleScattering, multiScattering );\n\t#else\n\t\tcomputeMultiscattering( material.dfg, material.specularColor, material.specularF90, singleScattering, multiScattering );\n\t#endif\n\tvec3 diffuse = irradiance * BRDF_Lambert( material.diffuseContribution ) * ( 1.0 - singleScattering - multiScattering );\n\t#ifdef USE_SHEEN\n\t\tfloat sheenAlbedo = IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );\n\t\tsheenSpecularIndirect += irradiance * material.sheenColor * sheenAlbedo * RECIPROCAL_PI;\n\t\tfloat sheenEnergyComp = 1.0 - max3( material.sheenColor ) * sh