IDirect3DDevice8::GetRenderState
Retrieves a render-state value for a device.
HRESULT GetRenderState(
  D3DRENDERSTATETYPE State,
  DWORD* pValue
);
Parameters
- State
- [in] Device state variable that is being queried. This parameter can be any member of the D3DRENDERSTATETYPE enumerated type. 
- pValue
- [out, retval] Pointer to a variable that receives the value of the queried render state variable when the method returns. 
Return Values
If the method succeeds, the return value is D3D_OK.
D3DERR_INVALIDCALL if one of the arguments is invalid.
Requirements
  Header: Declared in D3d8.h.
  Import Library: Use D3d8.lib.
See Also
IDirect3DDevice8::SetRenderState