[FONT=Times New Roman] I am about to bring my very first normal map (whoop) into UE4 from XNormal, but before I do so I have two questions.
Firstly, I understand that each of the four colours (apart from the background, obviously) represent either left, right, up or down respectively. I have heard these represent different colours from programme to programme. Which direction (for lack of a better word*) does each colour represent in UE4 normal maps?
Secondly, in several tutorials [SUP] 2 [/SUP] I have watched about vertex painting, I have come to the understanding that a number of loose vertices is needed on each static mesh in order to effectively use vertex painting thereon. My question is, would having such loose vertices affect the quality of my normal maps? Would it, therefore, be more useful to add vertices after creating my normal map; or would this not make a difference?
Thanks for any replies in advance
*I would much appreciate if anyone could post the word I word use here.
[SUP] 2 [/SUP] for example, https://www.youtube.com/watch?v=AS_y7Dui_1Y&t=2s