// setCounts ensures the draw frame has the most recent number of
// verticies and faces. The objects may have been updated after the
// draw object was created by the engine.
func (m *machine) setCounts(d render.Draw) {
if cnts, ok := m.counts[d.Vao()]; ok {
d.SetCounts(cnts.faces, cnts.verticies)
} else {
log.Printf("machine.setCounts: must have mesh counts %d", d.Vao())
}
}
