https://learn.microsoft.com/en-us/windows/win32/api/d3d11/nf-d3d11-id3d11devicecontext-iagetprimitivetopology
ID3D11DeviceContext::IAGetPrimitiveTopology (d3d11.h) - Win32 apps | Microsoft Learn
Get information about the primitive type, and data order that describes input data for the input assembler stage. (ID3D11DeviceContext.IAGetPrimitiveTopology)
happsmicrosoftlearn