bool created = false;

UINT i = 0;
ComPtr<IDXGIAdapter1> pAdapter;
HRESULT hr = S_OK;
while (SUCCEEDED(m_dxgiFactory->EnumAdapters1(i++, pAdapter.ReleaseAndGetAddressOf())))
{
    DXGI_ADAPTER_DESC1 desc = {};
    pAdapter->GetDesc1(&desc);
    if (SUCCEEDED((hr = D3D12CreateDevice(pAdapter.Get(), D3D_FEATURE_LEVEL_11_0, IID_PPV_ARGS(&m_device)))))
    {
        created = true;
        pAdapter.ReleaseAndGetAddressOf();
        break;
    }
}
if (!created)
{
    ComPtr<IDXGIAdapter1> pWarpAdapter;
    CHK(m_dxgiFactory->EnumWarpAdapter(IID_PPV_ARGS(&pWarpAdapter)));

    CHK((hr = D3D12CreateDevice(
        pWarpAdapter.Get(),
        D3D_FEATURE_LEVEL_11_0,
        IID_PPV_ARGS(&m_device)
        )));
}