Unity OnGUI实时显示游戏FPS

using System.Collections;using System.Collections.Generic;using UnityEngine;/// <summary>/// FPS 显示于OnGUI /// </summary>public class FPSOnGUIText : MonoBehaviour { float updateInterval = 1.0f;   //当前时间间隔 private float accumulated = 0.0f;  //在此期间累积  private float frames = 0;    //在间隔内绘制的帧  private float timeRemaining;   //当前间隔的剩余时间 private float fps = 15.0f;    //当前帧 Current FPS private float lastSample; void Start() {  DontDestroyOnLoad(this.gameObject); //不销毁此游戏对象，在哪个场景都可以显示，，不需要则注释  timeRemaining = updateInterval;  lastSample = Time.realtimeSinceStartup; //实时自启动 }  void Update() {  ++frames;  float newSample = Time.realtimeSinceStartup;  float deltaTime = newSample - lastSample;  lastSample = newSample;  timeRemaining -= deltaTime;  accumulated += 1.0f / deltaTime;   if (timeRemaining <= 0.0f)  {   fps = accumulated / frames;   timeRemaining = updateInterval;   accumulated = 0.0f;   frames = 0;  } } void OnGUI() {  GUIStyle style = new GUIStyle  {   border = new RectOffset(10, 10, 10, 10),   fontSize = 50,   fontStyle = FontStyle.BoldAndItalic,     };  //自定义宽度 ，高度大小 颜色，style  GUI.Label(new Rect(Screen.width/2-50, Screen.height - 100, 200, 200), "<color=#00ff00><size=30>" + "FPS:" + fps.ToString("f2")+ "</size></color>", style); }}