How not to render the whole scene?

Question

C++ / C#

How to set the renderer to render only displayables and not the whole scene

public void OnCollisionStep2D(Collider col)
    {
        col.GetComponent<MeshRenderer>().enabled = true;
        col.GetComponentInChildren<MeshRenderer>().enabled = true;
        Debug.Log("На сцене ");


    }

  public  void OnCollisionExit2D(Collider col)
    {
        col.GetComponent<MeshRenderer>().enabled = false;
        col.GetComponentInChildren<MeshRenderer>().enabled = false;
        Debug.Log("Вышел");
    }

I gave the collider to the scene (Maybe it's not legal) And tried to solve the problem this way Didn't help

Answer 1

Read - https://docs.unity3d.com/ru/530/Manual/OcclusionCu...
Colliders have nothing to do with it at all.