[ { "Type": "MaterialFunction", "Name": "PerceivedBrightness", "Class": "UScriptClass'MaterialFunction'", "Flags": "RF_Public | RF_Standalone | RF_Transactional | RF_WasLoaded | RF_LoadCompleted", "Properties": { "Description": "Calculates the luminance of an RGB color according to the perceived brightness to humans", "bExposeToLibrary": true, "StateId": "C894CE10-466E5C5E-EE134A8B-5634BF07" } } ]