Game view scale on compilation/play

Question

Something that has been going on for some time in Unity since they added the Scaling of the game view is that sometimes after compilation and/or when pressing the play button the scale change for no reason (zoom in the game view). Restarting unity doesn't fix this. It seems to always go to 0.55 in scale.

Am I the only one that have this problem ? Did anyone managed to understand why it happens and how to solve this ?

Thanks for the help

Answer 1

Answer by ABerlemont · Dec 19, 2018 at 02:06 PM

It seems that changing the layout through the "saved layout" menu (top right of the editor) temporary fix this issue.

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subzer0 · Jan 12, 2019 at 02:22 PM 0

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@ABerlemont can you please tell me how you solve it ? I went to layout button in the top right corner and saved the layout. But it is still zoo$$anonymous$$g in on play mode.

ABerlemont subzer0 · Jan 12, 2019 at 07:03 PM 1

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I meant: change the layout selecting any other than the one you are using will refresh the editor and fix the issue
You can, for example, save your current layout then switch to another one and then come back to it using the layout menu

subzer0 ABerlemont · Jan 13, 2019 at 09:13 AM 0

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Ok, thanks ! It worked.

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svendkiloo · Mar 14, 2019 at 07:32 AM 0

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This used to work for me, but recently I couldn't get it to fix it. As I don't need a fixed resolution at the moment, I've just set it to a fixed scale ins$$anonymous$$d and then the problem doesn't happen.

Answer 2

Answer by svendkiloo · Mar 14, 2019 at 07:34 AM

EDIT: This seems to now have been fixed in 2019.1.8:

 Editor: Fixed game view scale in play mode for mobile platforms. (1140742, 1151179)

https://unity3d.com/unity/whats-new/2019.1.8

Also fixed or planned fixed for some other major Unity versions: https://issuetracker.unity3d.com/issues/game-tab-window-rescales-when-entering-the-play-mode?_ga=2.6018931.1353564765.1561964524-1323957048.1539005405

An alternative solution, if you don't need to have the game view set to a certain resolution, is to set it instead to a certain aspect ratio. Then the scaling problem doesn't seem to occur.

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JeremyBerube · Dec 07, 2019 at 05:01 PM 0

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The alternative solution of using an aspect ratio did the trick for me. Thanks!

Answer 3

Just use this code snippet http://answers.unity.com/answers/1612575/view.html

  #if UNITY_EDITOR
  void Awake()
  {
      SetGameViewScale();
  }
  
  void SetGameViewScale()
  {
      System.Reflection.Assembly assembly = typeof(UnityEditor.EditorWindow).Assembly;
      System.Type type = assembly.GetType("UnityEditor.GameView");
      UnityEditor.EditorWindow v = UnityEditor.EditorWindow.GetWindow(type);
  
      var defScaleField = type.GetField("m_defaultScale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
  
      //whatever scale you want when you click on play
      float defaultScale = 0.1f;
  
      var areaField = type.GetField("m_ZoomArea", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
      var areaObj = areaField.GetValue(v);
  
      var scaleField = areaObj.GetType().GetField("m_Scale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
      scaleField.SetValue(areaObj, new Vector2(defaultScale, defaultScale));
  }
  #endif

Answer 4

Improved code:

 using System;
 using System.Reflection;
 using UnityEditor;
 using UnityEngine;
 using Object = UnityEngine.Object;
 
 [InitializeOnLoad]
 public static class FixResolutionScale
 {
     static FixResolutionScale()
     {
         EditorApplication.playModeStateChanged += OnPlayStateChanged;
         SetGameViewScale();
     }
 
     private static void OnPlayStateChanged(PlayModeStateChange playModeStateChange)
     {
         SetGameViewScale();
     }
 
     private static void SetGameViewScale()
     {
         Type gameViewType = GetGameViewType();
         EditorWindow gameViewWindow = GetGameViewWindow(gameViewType);
 
         if (gameViewWindow == null)
         {
             Debug.LogError("GameView is null!");
             return;
         }
  
         var defScaleField = gameViewType.GetField("m_defaultScale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
  
         //whatever scale you want when you click on play
         float defaultScale = 0.1f;
  
         var areaField = gameViewType.GetField("m_ZoomArea", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
         var areaObj = areaField.GetValue(gameViewWindow);
  
         var scaleField = areaObj.GetType().GetField("m_Scale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
         scaleField.SetValue(areaObj, new Vector2(defaultScale, defaultScale));
     }
 
     private static Type GetGameViewType()
     {
         Assembly unityEditorAssembly = typeof(EditorWindow).Assembly;
         Type gameViewType = unityEditorAssembly.GetType("UnityEditor.GameView");
         return gameViewType;
     }
 
     private static EditorWindow GetGameViewWindow(Type gameViewType)
     {
         Object[] obj = Resources.FindObjectsOfTypeAll(gameViewType);
         if (obj.Length > 0)
         {
             return obj[0] as EditorWindow;
         }
         return null;
     }
 }

Answer 5

A fix to previous solution. In my case if I edit the scripts, unity 2019.1.5 changes the scale of game window. So ... Just add this to your project.

 using System;
 using System.Reflection;
 using UnityEditor;
 using UnityEngine;
 using Object = UnityEngine.Object;
 
 [InitializeOnLoad]
 [ExecuteInEditMode]
 public class FixGameWindowScaleBug
 {
     private static bool mUpdate = false;
     
     static FixGameWindowScaleBug()
     {
         EditorApplication.update += update;
         EditorApplication.delayCall += delayCall;
         SetGameViewScale();
     }
     
     private static void delayCall()
     {
         mUpdate = true;
     }
     
     private static void update()
     {
         if (mUpdate)
         {
             SetGameViewScale();
             mUpdate = false;
         }
     }
 
     private static void SetGameViewScale()
     {
         Type gameViewType = GetGameViewType();
         EditorWindow gameViewWindow = GetGameViewWindow(gameViewType);
 
         if (gameViewWindow == null)
         {
             Debug.LogError("GameView is null!");
             return;
         }
 
         var defScaleField = gameViewType.GetField("m_defaultScale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
 
         //whatever scale you want when you click on play
         float defaultScale = 0.1f;
 
         var areaField = gameViewType.GetField("m_ZoomArea", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
         var areaObj = areaField.GetValue(gameViewWindow);
 
         var scaleField = areaObj.GetType().GetField("m_Scale", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
         scaleField.SetValue(areaObj, new Vector2(defaultScale, defaultScale));
     }
 
     private static Type GetGameViewType()
     {
         Assembly unityEditorAssembly = typeof(EditorWindow).Assembly;
         Type gameViewType = unityEditorAssembly.GetType("UnityEditor.GameView");
         return gameViewType;
     }
 
     private static EditorWindow GetGameViewWindow(Type gameViewType)
     {
         Object[] obj = Resources.FindObjectsOfTypeAll(gameViewType);
         if (obj.Length > 0)
         {
             return obj[0] as EditorWindow;
         }
         return null;
     }
 }

Game view scale on compilation/play

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