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FpsCapper - Limits the frame rate of the Unity Editor in Edit Mode
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| using UnityEditor; | |
| using UnityEngine; | |
| using UnityEngine.LowLevel; | |
| using System.Linq; | |
| using System.Threading; | |
| namespace EditorUtils { | |
| // | |
| // Serializable settings | |
| // | |
| [FilePath("UserSettings/FpsCapperSettings.asset", | |
| FilePathAttribute.Location.ProjectFolder)] | |
| public sealed class FpsCapperSettings : ScriptableSingleton<FpsCapperSettings> | |
| { | |
| public bool enable = false; | |
| public int targetFrameRate = 60; | |
| public void Save() => Save(true); | |
| void OnDisable() => Save(); | |
| } | |
| // | |
| // Settings GUI | |
| // | |
| sealed class FpsCapperSettingsProvider : SettingsProvider | |
| { | |
| public FpsCapperSettingsProvider() | |
| : base("Project/FPS Capper", SettingsScope.Project) {} | |
| public override void OnGUI(string search) | |
| { | |
| var settings = FpsCapperSettings.instance; | |
| var enable = settings.enable; | |
| var fps = settings.targetFrameRate; | |
| EditorGUI.BeginChangeCheck(); | |
| enable = EditorGUILayout.Toggle("Enable", enable); | |
| fps = EditorGUILayout.IntField("Target Frame Rate", fps); | |
| if (EditorGUI.EndChangeCheck()) | |
| { | |
| settings.enable = enable; | |
| settings.targetFrameRate = fps; | |
| settings.Save(); | |
| } | |
| } | |
| [SettingsProvider] | |
| public static SettingsProvider CreateCustomSettingsProvider() | |
| => new FpsCapperSettingsProvider(); | |
| } | |
| // | |
| // Player loop system | |
| // | |
| [UnityEditor.InitializeOnLoad] | |
| sealed class FpsCapperSystem | |
| { | |
| // Synchronization object | |
| static AutoResetEvent _sync; | |
| // Interval in milliseconds | |
| static int IntervalMsec; | |
| // Interval thread function | |
| static void IntervalThread() | |
| { | |
| _sync = new AutoResetEvent(true); | |
| while (true) | |
| { | |
| Thread.Sleep(Mathf.Max(1, IntervalMsec)); | |
| _sync.Set(); | |
| } | |
| } | |
| // Custom system update function | |
| static void UpdateSystem() | |
| { | |
| var cfg = FpsCapperSettings.instance; | |
| // Property update | |
| IntervalMsec = 1000 / Mathf.Max(5, cfg.targetFrameRate); | |
| // Rejection cases | |
| if (_sync == null) return; // Not ready | |
| if (!cfg.enable) return; // Not enabled | |
| if (cfg.targetFrameRate < 1) return; // Wrong FPS value | |
| if (Time.captureDeltaTime != 0) return; // Recording | |
| // Synchronization with the interval thread | |
| _sync.WaitOne(); | |
| } | |
| // Static constructor (custom system installation) | |
| static FpsCapperSystem() | |
| { | |
| // Interval thread launch | |
| new Thread(IntervalThread).Start(); | |
| // Custom system definition | |
| var system = new PlayerLoopSystem() | |
| { type = typeof(FpsCapperSystem), | |
| updateDelegate = UpdateSystem }; | |
| // Custom system insertion | |
| var playerLoop = PlayerLoop.GetCurrentPlayerLoop(); | |
| for (var i = 0; i < playerLoop.subSystemList.Length; i++) | |
| { | |
| ref var phase = ref playerLoop.subSystemList[i]; | |
| if (phase.type == typeof(UnityEngine.PlayerLoop.EarlyUpdate)) | |
| { | |
| phase.subSystemList | |
| = phase.subSystemList.Concat(new[]{system}).ToArray(); | |
| break; | |
| } | |
| } | |
| PlayerLoop.SetPlayerLoop(playerLoop); | |
| } | |
| } | |
| } // namespace EditorUtils |
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