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Assets/Standard Assets/Utility/FPSCounter.cs

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+using System;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace UnityStandardAssets.Utility
+{
+    [RequireComponent(typeof (Text))]
+    public class FPSCounter : MonoBehaviour
+    {
+        const float fpsMeasurePeriod = 0.5f;
+        private int m_FpsAccumulator = 0;
+        private float m_FpsNextPeriod = 0;
+        private int m_CurrentFps;
+        const string display = "{0} FPS";
+        private Text m_Text;
+
+
+        private void Start()
+        {
+            m_FpsNextPeriod = Time.realtimeSinceStartup + fpsMeasurePeriod;
+            m_Text = GetComponent<Text>();
+        }
+
+
+        private void Update()
+        {
+            // measure average frames per second
+            m_FpsAccumulator++;
+            if (Time.realtimeSinceStartup > m_FpsNextPeriod)
+            {
+                m_CurrentFps = (int) (m_FpsAccumulator/fpsMeasurePeriod);
+                m_FpsAccumulator = 0;
+                m_FpsNextPeriod += fpsMeasurePeriod;
+                m_Text.text = string.Format(display, m_CurrentFps);
+            }
+        }
+    }
+}