AssetMapGraphGUI.cs - OnGUI 함수 line 166 assetMap.window is null...

[masteage]

Service

• WebView
• AssetManagement
• Communicator
• LogViewer
• Manager
• UI
• Profiler
• Adapter
• DLST

Version

• GPM v2.2.6
• Common v2.4.0
• AssetManagement v1.2.4

Describe the bug

• 에셋 관리 - 에셋 맵 에서 error 및 gui 표기 문제..

NullReferenceException: Object reference not set to an instance of an object
Gpm.AssetManagement.AssetMap.Ui.AssetMapGraphGUI.OnGUI (UnityEngine.Rect rt) (at Assets/GPM/AssetManagement/Editor/AssetMap/Ui/AssetMapGraphGUI.cs:166)
Gpm.AssetManagement.AssetMap.Ui.AssetMapGUI.OnGUI () (at Assets/GPM/AssetManagement/Editor/AssetMap/Ui/AssetMapGUI.cs:151)
Gpm.AssetManagement.Ui.AssetManagementWindow.OnGUI () (at Assets/GPM/AssetManagement/Editor/AssetManagementWindow.cs:158)
UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition) (at <----------->:0)
UnityEditor.DockArea.DrawView (UnityEngine.Rect dockAreaRect) (at <----------->:0)
UnityEditor.DockArea.OldOnGUI () (at <----------->:0)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <----------->:0)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <----------->:0)
UnityEngine.UIElements.IMGUIContainer.DoIMGUIRepaint () (at <----------->:0)
UnityEngine.UIElements.UIR.RenderChainCommand.ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams drawParams, System.Single pixelsPerPoint, System.Exception& immediateException) (at <----------->:0)
Rethrow as ImmediateModeException
UnityEngine.UIElements.UIR.RenderChain.Render () (at <----------->:0)
UnityEngine.UIElements.UIRRepaintUpdater.Update () (at <----------->:0)
UnityEngine.UIElements.VisualTreeUpdater.UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase phase) (at <----------->:0)
UnityEngine.UIElements.Panel.UpdateForRepaint () (at <----------->:0)
UnityEngine.UIElements.Panel.Repaint (UnityEngine.Event e) (at <----------->:0)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <----------->:0)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at <----------->:0)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <----------->:0)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at <----------->:0)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at <----------->:0)

To Reproduce

1. 에셋 관리 - 에셋 맵
2. 특정 에셋 drag&drop
3. error 발생 및 애셋 맵 gui 표기 이슈 (확대 할때마다 error log 추가.)

Expected behavior

• error 가 제거 되고, 정상적으로 에셋맵 gui 가 나왔으면 좋겠습니다.
• 기타
  • assetMap.window 가 초기화가 제대로 되지 않는 flow 가 있는거 같습니다.
  • null check 를 하던 assetMap.window 의 초기화가 보증되도록 처리 되면 좋을듯 합니다.

// AssetMapGraphGUI.cs

        public AssetMapGUI(EditorWindow window)
        {
            this.window = window;
            Init();
        }

        public void OnGUI(Rect rt)
        {
        ...
        // line 166
        // NullReferenceException
        assetMap.window.BeginWindows();
        ...
        
        }

Screenshots

Environment

Unity

• Version 2021.3.34f1

Desktop

• Windows 11 Pro

[smflt-nhn]

@masteage
안녕하세요. AssetMap의 window는 생성자 생성 시 설정되는 값으로 컴파일 후 AssetManagementWindow.cs 내부의 AssetMap는 남아있어 동작하나 AssetMapGraphGUI 내 부 값은 메모리에 남아있지 않을 때 발생하지 않을까 추측됩니다.
아직 정확한 발생 원인은 알 수 없으나 OnGUI 전 assetMap.window이 없을 때 window를 설정하는 코드로 보완이 될것 같습니다.

AssetManagementWindows.cs
// line 149
case Menu.ASSET_MAP:
{
    if (assetMap == null)
    {
        assetMap = new AssetMapGUI(this);
    }

    // 추가
    if (assetMap.window == null)
    {
        assetMap.window = this;
    }
    
    using (new EditorGUILayout.HorizontalScope())
    {
        assetMap.OnGUI();
    }
}
break;

추후 원인 분석 후 다음 업데이트에 포함하겠습니다.

감사합니다.

[github-actions]

Stale issue. Please check this issue.