this material is relly complex, like rocket science😂
becouse i want to make random and massive door sky.
so i split door to knob , door bump alpha , material type to let me easy generate door
but this doorsky just a plane,so i add normal offset to let this doorsky have fake thickness
thank Sindre Opsahl Skaare for tutorial
link : https://youtu.be/fqKG6FuABqE
at last ,thank your click my work
hope you have nice day :)