Just google what a normal map is. It’s basically a texture that stores information of the surface normal vector for each pixel. Normal vector of a surface is the “arrow” that points up from that surface and its always perpendicular to said surface.
Just google what a normal map is. It’s basically a texture that stores information of the surface normal vector for each pixel. Normal vector of a surface is the “arrow” that points up from that surface and its always perpendicular to said surface.