using UnityEngine;

 using System.Collections;

 public class ShowFPS : MonoBehaviour {

     //设置帧率

     Application.targetFrameRate = ;

     public float f_UpdateInterval = 0.5F;

     private float f_LastInterval;

     private int i_Frames = ;

     private float f_Fps;

     void Start()

     {

         //Application.targetFrameRate=60;

         f_LastInterval = Time.realtimeSinceStartup;

         i_Frames = ;

     }

     void OnGUI()

     {

         GUI.Label(new Rect(, , , ), "FPS:" + f_Fps.ToString("f2"));

     }

     void Update()

     {

         ++i_Frames;

         if (Time.realtimeSinceStartup > f_LastInterval + f_UpdateInterval)

         {

             f_Fps = i_Frames / (Time.realtimeSinceStartup - f_LastInterval);

             i_Frames = ;

             f_LastInterval = Time.realtimeSinceStartup;

         }

     }

 }

// 帧数计算器，需要UGUI来显示，其实可以通过写在OnGUI中显示

[RequireComponent(typeof (Text))]

public class FPSCounter : MonoBehaviour

{

    const float fpsMeasurePeriod = 0.5f;    //FPS测量间隔

    private int m_FpsAccumulator = 0;   //帧数累计的数量

    private float m_FpsNextPeriod = 0;  //FPS下一段的间隔

    private int m_CurrentFps;   //当前的帧率

    const string display = "{0} FPS";   //显示的文字

    private Text m_Text;    //UGUI中Text组件

    private void Start()

    {

        m_FpsNextPeriod = Time.realtimeSinceStartup + fpsMeasurePeriod; //Time.realtimeSinceStartup获取游戏开始到当前的时间，增加一个测量间隔，计算出下一次帧率计算是要在什么时候

        m_Text = GetComponent<Text>();

    }

    private void Update()

    {

        // 测量每一秒的平均帧率

        m_FpsAccumulator++;

        if (Time.realtimeSinceStartup > m_FpsNextPeriod)    //当前时间超过了下一次的计算时间

        {

            m_CurrentFps = (int) (m_FpsAccumulator/fpsMeasurePeriod);   //计算

            m_FpsAccumulator = 0;   //计数器归零

            m_FpsNextPeriod += fpsMeasurePeriod;    //在增加下一次的间隔

            m_Text.text = string.Format(display, m_CurrentFps); //处理一下文字显示

        }

    }

}