Version: 2019.2
public static Camera.CameraCallback onPostRender ;

Description

OnPostRender вызывается после того, как камера закончит рендер сцены.

using UnityEngine;
public class ExampleClass : MonoBehaviour
{
    // callback to be called after any camera finishes rendering
    public void MyPostRender(Camera cam)
    {
        Debug.Log("PostRender " + gameObject.name + " from camera " + cam.gameObject.name);
    }

public void OnEnable() { // register the callback when enabling object Camera.onPostRender += MyPostRender; }

public void OnDisable() { // remove the callback when disabling object Camera.onPostRender -= MyPostRender; } }