private void ReorderRender(UnityEngine.Material[] materials)
        {
            if (materials.Length == 0)
            {
                return;
            }
            var order = new UnityEngine.Material[materials.Length];

            Array.Copy(materials, order, materials.Length);
            order.OrderBy(mat => mat.renderQueue);
            var lastQueue = int.MinValue;

            foreach (var mat in order)
            {
                if (lastQueue >= mat.renderQueue)
                {
                    mat.renderQueue = lastQueue++;
                }
                else
                {
                    lastQueue = mat.renderQueue;
                }
            }
        }