Update BufferD3D12 to use Align helper
Update BufferD3D12 to use Align helper

Kangz/nxt-standalone,googlearchive/nxt-standalone,Kangz/nxt-standalone,googlearchive/nxt-standalone,Kangz/nxt-standalone,googlearchive/nxt-standalone,Kangz/nxt-standalone,googlearchive/nxt-standalone