Unity3D显示帧率以及设置不限制帧率的实现过程就在下方：

[csharp] 

using UnityEngine;
using System.Collections;
public class Fps : MonoBehaviour
{
float updateInterval = 0.5f;
private float accum = 0.0f;
private float frames = 0;
private float timeleft;
 // Use this for initialization
void Start()
{
if (!guiText)
{
enabled = false;
return;
}
timeleft = updateInterval;
}
 // Update is called once per frame
void Update()
{
timeleft -= Time.deltaTime;
accum += Time.timeScale / Time.deltaTime;
++frames;
if (timeleft <= 0.0)
{
guiText.text = "" + (accum / frames).ToString("f2");
timeleft = updateInterval;
accum = 0.0f;
frames = 0;
}
}
}