1-bit = 2 discrete positions, (On or Off).
2-bit = 4 discrete positions, (steps of 16384 in DirectX).
3-bit = 8 discrete positions, (steps of 8192 in DirectX).
4-bit = 16 discrete positions, (steps of 4096 in DirectX).
5-bit = 32 discrete positions, (steps of 2048 in DirectX).
6-bit = 64 discrete positions, (steps of 1024 in DirectX).
7-bit = 128 discrete positions, (steps of 512 in DirectX).
8-bit = 256 discrete positions, (steps of 256 in DirectX).
9-bit = 512 discrete positions,  (steps of 128 in DirectX).
10-bit = 1024 discrete positions, (steps of 64 in DirectX).
11-bit = 2048 discrete positions, (steps of 32 in DirectX).
12-bit = 4096 discrete positions, (steps of 16 in DirectX).
13-bit = 8192 discrete positions, (steps of 8 in DirectX).
14-bit = 16384 discrete positions, (steps of 4 in DirectX).
15-bit = 32768 discrete positions, (steps of 2 in DirectX).
16-bit = 65536 discrete positions, (steps of 1 in DirectX).