Unity 显示FPS（C#语言）

直接上脚本了:

 1 using UnityEngine;
 2 using System.Collections;
 3 
 4 public class ShowFPS : MonoBehaviour {
 5     //设置帧率
 6     Application.targetFrameRate = 10; 
 7     public float f_UpdateInterval = 0.5F;
 8 
 9     private float f_LastInterval;
10 
11     private int i_Frames = 0;
12 
13     private float f_Fps;
14 
15     void Start() 
16     {
17         //Application.targetFrameRate=60;
18 
19         f_LastInterval = Time.realtimeSinceStartup;
20 
21         i_Frames = 0;
22     }
23 
24     void OnGUI() 
25     {
26         GUI.Label(new Rect(0, 100, 200, 200), "FPS:" + f_Fps.ToString("f2"));
27     }
28 
29     void Update() 
30     {
31         ++i_Frames;
32 
33         if (Time.realtimeSinceStartup > f_LastInterval + f_UpdateInterval) 
34         {
35             f_Fps = i_Frames / (Time.realtimeSinceStartup - f_LastInterval);
36 
37             i_Frames = 0;
38 
39             f_LastInterval = Time.realtimeSinceStartup;
40         }
41     }
42 }

拿一个别人的带注释的：

以备之后用，

// 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
        }
    }
}