#include "util/direct3d11.interop.h"

namespace coreframe_flutter_windows::util {

namespace {

typedef HRESULT(WINAPI *CreateDirect3D11DeviceFromDXGIDeviceFn)(IDXGIDevice *,
                                                                LPVOID *);

struct D3DFuncs {
  CreateDirect3D11DeviceFromDXGIDeviceFn CreateDirect3D11DeviceFromDXGIDevice =
      nullptr;

  D3DFuncs() {
    auto handle = GetModuleHandle(L"d3d11.dll");
    if (!handle) {
      return;
    }

    CreateDirect3D11DeviceFromDXGIDevice =
        reinterpret_cast<CreateDirect3D11DeviceFromDXGIDeviceFn>(
            GetProcAddress(handle, "CreateDirect3D11DeviceFromDXGIDevice"));
  }

  static const D3DFuncs &instance() {
    static D3DFuncs funcs;
    return funcs;
  }
};

} // namespace

HRESULT CreateDirect3D11DeviceFromDXGIDevice(IDXGIDevice *dxgiDevice,
                                             IInspectable **graphicsDevice) {
  auto ptr = D3DFuncs::instance().CreateDirect3D11DeviceFromDXGIDevice;
  if (ptr) {
    return ptr(dxgiDevice, reinterpret_cast<LPVOID *>(graphicsDevice));
  }

  return E_NOTIMPL;
}

} // namespace coreframe_flutter_windows::util