Support using open-sourced DirectX headers.
diff --git a/include/D3D12MemAlloc.h b/include/D3D12MemAlloc.h
index 7ebcf98..6b11a99 100644
--- a/include/D3D12MemAlloc.h
+++ b/include/D3D12MemAlloc.h
@@ -61,7 +61,13 @@
// If using this library on a platform different than Windows PC or want to use different version of DXGI,
// you should include D3D12-compatible headers before this library on your own and define this macro.
#ifndef D3D12MA_D3D12_HEADERS_ALREADY_INCLUDED
- #include <d3d12.h>
+ #if defined(USING_DIRECTX_HEADERS)
+ #include <directx/d3d12.h>
+ #include <dxguids/dxguids.h>
+ #else
+ #include <d3d12.h>
+ #endif
+
#include <dxgi1_4.h>
#endif