public void OnDeviceInit()
        {
            m_pool = new MyConcurrentPool <MyRenderContext>(MaxDeferredRCsCount, true);

            // Initialize all RCs
            m_tmpList.Clear();
            int poolSize = m_pool.Count;

            for (int i = 0; i < poolSize; i++)
            {
                MyRenderContext rc = m_pool.Get();
                m_tmpList.Add(rc);
                rc.Initialize();
            }
            foreach (var rc in m_tmpList)
            {
                m_pool.Return(rc);
            }
            m_tmpList.Clear();

            m_isDeviceInit = true;
        }