DirectX
Microsoft が Windows用に用意したゲーム用API群
Windows95ぐらいから
Direct3D
DirectDraw
DirectSound
Direct3DSound
DirectInput
DirectMusic
DirectPlay
DirectShow
DirectStorage
https://devblogs.microsoft.com/directx/directstorage-api-downloads/
Webインストーラ (旧ライブラリ等)
https://www.microsoft.com/ja-jp/download/details.aspx?id=35
SDK 12 Agility
https://devblogs.microsoft.com/directx/directx12agility/
nVIDIA
https://developer.nvidia.com/directx
AMD
https://gpuopen.com/directx12/
https://www.amd.com/ja/products/graphics/ecosystems/directx12.html