Unity3D - HUDFPS

11/1/2025 9:05:06 AM in Japan
以下のC#コードを用意し
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実行イメージ

file:HUDFPS.cs

using UnityEngine;
using System.Collections;

public class HUDFPS : MonoBehaviour {
  // Attach this to any object to make a frame/second Indicator.
  // It calculates frames/second over each updateInterval.
  // so the display does not keep changing wildly.
  // We do this not by simple counting frames per interval.
  // but by accumlating FPS for each frame.
  // This way we end up with startRect overall FPS even
  // if the interval renders something like 5.5 frames.

  // The rect the window is initially display at.
  public Rect startRect = new Rect(10, 10, 35, 55);

  // Do you want the color change if the FPS gets low
  public bool updateColor = true;

  // Do you want to allow the dragging of the FPS window
  public bool allowDrag = true;

  // The update frequency of the fps
  public float frequency = 0.5F;

  // How many decimal do you want to display
  public int nbDecimal = 1;

  // FPS accumlated over the interval
  private float accum = 0F;

  // Frames down over the interval
  private int frames = 0;

  // The color of the GUI, depending of the FPS (R < 10, Y < 30.0 >= 30)
  private Color color = Color.white;

  // The fps formatted into a string
  private string sFPS = "";

  // The style the text will be displayed based on defaultSkin.label.
  private GUIStyle style;

  // Start is called before the first frame update
  void Start() {
    StartCoroutine( FPS() );
  }

  // Update is called once per frame
  void Update() {
    accum += Time.timeScale / Time.deltaTime;
    ++frames;
  }

  IEnumerator FPS() {
    // Infinite loop executed every "frequency" seconds.
    while( true ) {
      // Update the FPS
      float fps = accum / frames;
      sFPS = fps.ToString("f" + Mathf.Clamp(nbDecimal, 0, 10));

      // Update the color
      color = (fps >= 30) ? Color.blue : ((fps > 10) ? Color.red : Color.yellow);

      accum = 0.0F;
      frames = 0;

      yield return new WaitForSeconds(frequency);
    }
  }

  private void OnGUI() {
    // Copy the default label skin, change the color and alignment
    if (style == null) {
      style = new GUIStyle(GUI.skin.label);
      style.normal.textColor = Color.white;
      style.alignment = TextAnchor.MiddleCenter;
    }
    GUI.color = updateColor ? color : Color.white;
    startRect = GUI.Window(0, startRect, DoMyWindow, "");
  }

  void DoMyWindow(int windowID) {
    GUI.Label(new Rect(0, 0, startRect.width, startRect.height), sFPS + " FPS", style);
    if (allowDrag) GUI.DragWindow(new Rect(0, 0, Screen.width, Screen.height));
  }

  private void Awake() {
    // VSYNC 0: OFF
    // QualitySettings.vSyncCount = 0

    // Application.targetFrameRate = 30;
  }
}
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