Bug IndexOutOfRangeException in URP

In Unity 2021.3.0f1 and URP 12.1.6, when adding a Camera to a Camera Stack in a script may trigger an IndexOutOfRangeException.

I write a script to add camera to camera stack during Start() method.

Code:

Code (CSharp):

1. public class TEST : MonoBehaviour
2. {
3.     public Camera uiCamera;
4.  
5.     private void Start()
6.     {
7.         Camera.main.GetComponent<UniversalAdditionalCameraData>()
8.                 .cameraStack.Add(uiCamera);
9.     }
10. }

If I select the camera gameobject(which owns the Stack) and then enter Play Mode, and then expand Camera component in Inspector window, URP will throw a IndexOutOfRangeException:


But if I select any other gameobject before expand Camera component, URP will not throw the exception:


Error Log:
IndexOutOfRangeException: Index was outside the bounds of the array.
UnityEditor.Rendering.Universal.UniversalRenderPipelineSerializedCamera.Update () (at Library/PackageCache/com.unity.render-pipelines.universal@12.1.6/Editor/Camera/UniversalRenderPipelineSerializedCamera.cs:113)
UnityEditor.Rendering.Universal.UniversalRenderPipelineCameraEditor.OnInspectorGUI () (at Library/PackageCache/com.unity.render-pipelines.universal@12.1.6/Editor/Camera/UniversalRenderPipelineCameraEditor.cs:278)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass59_0.<CreateIMGUIInspectorFromEditor>b__0 () (at <3d6ac16e3c754a199373804b462a1b72>:0)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr, Boolean&)

 

Hey there! Just wanted to confirm that I'm having the exact same issue. Can reproduce and replicate exactly as you've described as well (Using 2021.3.4f1). Thanks for showing the work around in the meantime!

Code (CSharp):

1. IndexOutOfRangeException: Index was outside the bounds of the array.
2. UnityEditor.Rendering.Universal.UniversalRenderPipelineSerializedCamera.Update () (at Library/PackageCache/com.unity.render-pipelines.universal@12.1.7/Editor/Camera/UniversalRenderPipelineSerializedCamera.cs:113)
3. UnityEditor.Rendering.Universal.UniversalRenderPipelineCameraEditor.OnInspectorGUI () (at Library/PackageCache/com.unity.render-pipelines.universal@12.1.7/Editor/Camera/UniversalRenderPipelineCameraEditor.cs:333)
4. UnityEditor.UIElements.InspectorElement+<>c__DisplayClass59_0.<CreateIMGUIInspectorFromEditor>b__0 () (at /home/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Editor/Inspector/InspectorElement.cs:636)
5. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&) (at /home/bokken/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)
6.  

 

Also seeing this on 2021.3.11f1.

 

Also seeing this on 2021.3.13f1.

 

I have exactly the same problem in 2021.3.11f1. Cannot add stack via script

 

Solved the issue. Make sure that the scene which contains the camera, should be active scene via script
Example:
SceneManager.SetActiveScene(SceneManager.GetSceneByName("MapScene"));

 

same issure, its the bug code in URP

for (int i = 0; i < numCameras; ++i)
{
cameraSerializedObjects.Update();
}

 

If u not avtive chosen the base main camera, and running ,it will not show the error.
if u focus the main camera, it will error.
its the editor serilize update bug.

 

the problem keeps in 2022.3.7f1.
I try to insert one overlay cam via script to enable overlay cam only when really necessary but I receive the same error.