void gf_sg_parent_setup(GF_Node *node)
{
	((GF_ParentNode *)node)->children = NULL;
	node->sgprivate->flags |= GF_SG_CHILD_DIRTY;
}
void gf_sg_parent_setup(GF_Node *node)
{
	((GF_ParentNode *)node)->children = NULL;
	node->sgprivate->flags |= GF_SG_CHILD_DIRTY;
}