DirectX is a collection of application programming interfaces (APIs) for handling multimedia, especially game programming and video, on Microsoft platforms. It is a core component of the Windows operating system and is used by many games and other multimedia applications. DirectX is responsible for tasks such as 3D graphics rendering, sound, and input handling.
To check your DirectX version, you can use the DirectX Diagnostic Tool (DXDiag). To open DXDiag, press the Windows key + R, type “dxdiag” into the Run dialog box, and then click OK.