void     NV_PureKdTreeRenderAction::KdTreeNode::MakeParentsVisible() 
{ 
     register KdTreeNode * pTempNode     = m_pParent; 
 
     while ((pTempNode) && (!pTempNode->m_bVisible)) 
     { 
          //pTempNode->m_bCut          = FALSE; 
          pTempNode->m_bVisible     = TRUE; 
          pTempNode     = pTempNode->m_pParent; 
     } 
}