MapleStory/Latale Equipment Programming

I asked a friend of mine, mainly because I know he has experience with both games and codes in multiple langs, and he had this to say

Its not near immediately, its just a part of the regular render process, but some rendering algorithms make it so they only render if something is changed if they changed the equipment; maybe that re-equip has a render-call so it only re-renders that part of the gear. rendering is pretty ismple all in all, its the animations that are a peach lol