public void NotifyLayerIndexChange()
{
int count = m_rootNodes.Count;
for (int i = 0; i < count; i++)
{
Node node = m_rootNodes[i];
StateLayer layer = node.context.GetLayer();
if (layer != null)
{
node.rootIndex = layer.get_index();
}
}
m_rootNodes.Sort(m_rootNodeComparer);
m_updateOrder = true;
}