void testDirect3D11FeatureLevel(const TCHAR *testName, D3D_DRIVER_TYPE driverType)
{
    tcout << _T("\nTesting ") << testName << _T("...\n");

    HWND hWnd = CreateWindowEx(0, _T("#32769"), _T("Dummy"), 0, 0, 0, 0, 0, 0, 0, GetModuleHandle(0), 0);
    if (!hWnd)
    {
        tcout << "Cannot create window.\n";
        return;
    }

    ID3D11Device *device;
    D3D_FEATURE_LEVEL featureLevel;
    HRESULT hr = D3D11CreateDevice(0, driverType, 0, 0, 0, 0, D3D11_SDK_VERSION,
                                   &device, &featureLevel, 0);
    if (!SUCCEEDED(hr))
    {
        tcout << "D3D11 device creation failed.\n";
        CloseWindow(hWnd);
        return;
    }

    tcout << _T("D3D11 device created.\n");

    switch (featureLevel)
    {
    case D3D_FEATURE_LEVEL_9_1:
        tcout << _T("Feature level 9_1 supported, which means we have shaders 2.0.\n");
        break;
    case D3D_FEATURE_LEVEL_9_2:
        tcout << _T("Feature level 9_2 supported, which means we have shaders 2.0.\n");
        break;
    case D3D_FEATURE_LEVEL_9_3:
        tcout << _T("Feature level 9_3 supported, which means we have shaders 3.0.\n");
        break;
    case D3D_FEATURE_LEVEL_10_0:
        tcout << _T("Feature level 10_0 supported, which means we have shaders 4.0.\n");
        break;
    case D3D_FEATURE_LEVEL_10_1:
        tcout << _T("Feature level 10_1 supported, which means we have shaders 4.0.\n");
        break;
    case D3D_FEATURE_LEVEL_11_0:
        tcout << _T("Feature level 11_0 supported, which means we have shaders 5.0.\n");
        break;
    }

    device->Release();
    CloseWindow(hWnd);
}

int _tmain(int argc, _TCHAR* argv[])
{
    testDirect3D11FeatureLevel(_T("HAL"), D3D_DRIVER_TYPE_HARDWARE);
    testDirect3D11FeatureLevel(_T("REF"), D3D_DRIVER_TYPE_REFERENCE);
    testDirect3D11FeatureLevel(_T("WARP"), D3D_DRIVER_TYPE_WARP);
    return 0;
}