Reputation: 323
I heard the term normal data many times before in direct3d games. But I never knew what it means. I tried searching in google for results, but most of them gave vague explanations about Normal data.
From what i understand, normal data is used for lighting calculations, such as diffusion, ambient and directional. But that's pretty much all i understand..
Can someone explain to me why we use normal data? and what exactly is normal data?
Upvotes: 0
Views: 114
Reputation: 20899
In graphics usually referring to the vector that's perpendicular to a surface: https://en.wikipedia.org/wiki/Normal_(geometry)
Upvotes: 2