Windows DirectX is well documented. DirectX11 hardware does X/Y/Z. When people buy GPUs, they can see which DirectX version it supports, be it DX9, DX10, DX11,

Windows DirectX is well documented. DirectX11 hardware does X/Y/Z. When people buy GPUs, they can see which DirectX version it supports, be it DX9, DX10, DX11, or DX12.