Hardware 3D (C++ DirectX Graphics) Tutorial 34
From Chilipedia
Normal mapping is like what texture mapping would be if it actually lived up to its name. Time to learn about tangent space and other such weird things, I guess.
Topics Covered
Part 1
- Normal mapping motivation / goal
- Texture alignment
- RGB encoding of normal vectors
Errata
I decode the z component of the normal map by mapping from 0..1 => 0..1 directly, but this mapping is not common, nor is it correct for the map we are using. All channels should be mapped with 0..1 => -1..+1. This will be corrected in Part 2.
