using UnityEngine; using UnityEngine.Rendering; public class MyRenderer : MonoBehaviour { private CommandBuffer cmdbuf; void Start() { cmdbuf = new CommandBuffer(); Camera.main.AddCommandBuffer(CameraEvent.AfterGBuffer, cmdbuf); } void OnRenderObject() { cmdbuf.BeginSample("My Sample"); // render commands go here cmdbuf.EndSample(); } }In this example, a new CommandBuffer object is created and added to the camera's AfterGBuffer event using the AddCommandBuffer method. Then, in the OnRenderObject method, the commands that need to be grouped together are enclosed within a BeginSample and EndSample block. The argument passed to BeginSample is a string that represents the name of the sample group. This example is specific to Unity, so the package library would be the Unity engine's internal rendering library. However, the concept of grouping render commands together using a CommandBuffer is applicable to other graphics libraries and engines as well.