Commit 1

Assets/Scripts/Optimization/PerformanceHUD.cs

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+using UnityEngine;
+using TMPro;
+
+namespace Elbyss.Optimization
+{
+    public class PerformanceHUD : MonoBehaviour
+    {
+        private float deltaTime = 0.0f;
+        private string displayFormat = "{0:0.0} ms ({1:0.} fps)";
+
+        private void Update()
+        {
+            deltaTime += (Time.unscaledDeltaTime - deltaTime) * 0.1f;
+        }
+
+        private void OnGUI()
+        {
+            int w = Screen.width, h = Screen.height;
+
+            GUIStyle style = new GUIStyle();
+
+            Rect rect = new Rect(10, 10, w, h * 2 / 100);
+            style.alignment = TextAnchor.UpperLeft;
+            style.fontSize = h * 2 / 50;
+            style.normal.textColor = new Color(0.0f, 1.0f, 0.5f, 1.0f);
+            
+            float msec = deltaTime * 1000.0f;
+            float fps = 1.0f / deltaTime;
+            string text = string.Format(displayFormat, msec, fps);
+            
+            GUI.Label(rect, text, style);
+        }
+    }
+}