Editor crash when using terrain with XR plugin and multi pass rendering

Hello, I've been running into an issue with terrain in Unity 2020.1.1, 2020.1.2 and 2020.1.3 that appears to be stemming from unity-xr-plugin.

The editor consistently crashes when the xr provider is enabled and when a terrain object is active in the scene with a Steam VR Camera rig.

This can be reproduced by creating a new scene, adding a blank terrain with a steam vr camera rig and having the XR plugin enabled with multi pass rendering mode.

I've added a part of the editor crash log that I believe may be relevant.

``` [XR] [OpenVR] Loaded settings: Editor App Name : [Testing] Steam XR Lighting Test [XR] Editor App Key : application.generated.unity.steamxrlightingtest.exe [XR] Action Manifest Path : StreamingAssets\SteamVR\actions.json [XR] Stereo Rendering Mode : Multi Pass [XR] Initialization Type : Scene [XR] Mirror View Mode : Right Eye [Subsystems] Loading plugin XRSDKOpenVR for subsystem OpenVR Display... [XR] [OpenVR] static Initialize: application.generated.unity.steamxrlightingtest.exe [XR] [OpenVR] Starting Initialize [XR] [OpenVR] startupInfo: { "app_key": "application.generated.unity.steamxrlightingtest.exe", "app_name": "[Testing] Steam XR Lighting Test", "action_manifest_path": "C:/Users/Pieter/Documents/Unity 3D/Steam XR Lighting Test/Assets/StreamingAssets/SteamVR/actions.json" } [XR] [OpenVR] is initialized [Subsystems] Loading plugin XRSDKOpenVR for subsystem OpenVR Input... [XR] XR OpenVR Display Start [XR] [OpenVR] Set active mirror mode (-2) [SteamVR] Initialized. Connected to lighthouse:LHR-90AED6B5 UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object) UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[]) UnityEngine.Logger:Log(LogType, Object) UnityEngine.Debug:Log(Object) Valve.VR.SteamVR:.ctor() (at Assets\SteamVR\Scripts\SteamVR.cs:667) Valve.VR.SteamVR:CreateInstance() (at Assets\SteamVR\Scripts\SteamVR.cs:220) Valve.VR.SteamVR:Initialize(Boolean) (at Assets\SteamVR\Scripts\SteamVR.cs:103) Valve.VR.SteamVR_Behaviour_Pose:OnEnable() (at Assets\SteamVR\Input\SteamVR_Behaviour_Pose.cs:88) (Filename: Assets/SteamVR/Scripts/SteamVR.cs Line: 667) Loaded scene 'Temp/__Backupscenes/0.backup' Deserialize: 1.340 ms Integration: 2930.365 ms Integration of assets: 0.020 ms Thread Wait Time: 17.760 ms Total Operation Time: 2949.485 ms [XR] [OpenVR] Device connecting (status change). OpenVRIndex: 0. UnityID: 0 [XR] [OpenVR] Device connecting (status change). OpenVRIndex: 1. UnityID: 1 [XR] [OpenVR] Device connecting (status change). OpenVRIndex: 2. UnityID: 2 XRTextureManager::RequestCreateTexture XRTextureManager::RequestCreateTexture XRTextureManager::RequestCreateTexture XRTextureManager::RequestCreateTexture XRTextureManager::SetupRenderTextureFromXRRequest (id: 1 col: 0000000000000000 d: 0000000000000000) XRTextureManager::SetupRenderTextureFromXRRequest (id: 2 col: 0000000000000000 d: 0000000000000000) XRTextureManager::SetupRenderTextureFromXRRequest (id: 3 col: 0000000000000000 d: 0000000000000000) XRTextureManager::SetupRenderTextureFromXRRequest (id: 4 col: 0000000000000000 d: 0000000000000000) RenderTexture->Create RenderTexture->Create RenderTexture->Create RenderTexture->Create Stacktrace: at <0xffffffff> at (wrapper managed-to-native) UnityEditor.EditorGUIUtility.RenderPlayModeViewCamerasInternal_Injected (UnityEngine.RenderTexture,int,UnityEngine.Vector2&,bool,bool) [0x0000c] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEditor.EditorGUIUtility.RenderPlayModeViewCamerasInternal (UnityEngine.RenderTexture,int,UnityEngine.Vector2,bool,bool) [0x00007] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEditor.PlayModeView.RenderView (UnityEngine.Vector2,bool) [0x000ea] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEditor.GameView.OnGUI () [0x002ee] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect,UnityEngine.Rect) [0x00066] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEditor.DockArea.DrawView (UnityEngine.Rect,UnityEngine.Rect) [0x00004] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEditor.DockArea.OldOnGUI () [0x001a5] in <701f6580abad44cfb237a543dcd0d94b>:0 at UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,bool,UnityEngine.Rect,System.Action,bool) [0x001d6] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,System.Action,bool) [0x000c8] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.IMGUIContainer.DoIMGUIRepaint () [0x0005a] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIR.RenderChainCommand.ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams,single,System.Exception&) [0x000bd] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIR.UIRenderDevice.EvaluateChain (UnityEngine.UIElements.UIR.RenderChainCommand,UnityEngine.Material,UnityEngine.Material,UnityEngine.Texture,UnityEngine.Texture,UnityEngine.Texture,single,Unity.Collections.NativeSlice`1,Unity.Collections.NativeSlice`1,UnityEngine.MaterialPropertyBlock,bool,System.Exception&) [0x00536] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIR.RenderChain.Render () [0x0011f] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIRRepaintUpdater.Update () [0x0006c] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.VisualTreeUpdater.UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase) [0x0001f] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.Panel.UpdateForRepaint () [0x0003c] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.Panel.Repaint (UnityEngine.Event) [0x00099] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel) [0x00029] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (int,intptr,bool&) [0x0003f] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIEventRegistration.ProcessEvent (int,intptr) [0x0001f] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.UIElements.UIEventRegistration/<>c.<.cctor>b__1_2 (int,intptr) [0x00003] in <9c9fa79efe9e479a8cbe7a6f99f673d3>:0 at UnityEngine.GUIUtility.ProcessEvent (int,intptr,bool&) [0x00018] in <2500dd078a544a69b6c923861af6cd15>:0 at (wrapper runtime-invoke) .runtime_invoke_void_int_intptr_intptr& (object,intptr,intptr,intptr) [0x0002d] in <2500dd078a544a69b6c923861af6cd15>:0 ================================================================= Got a SIGSEGV while executing native code. This usually indicates a fatal error in the mono runtime or one of the native libraries used by your application. ================================================================= Crash!!! ```

Any help on this would be much appreciated, thanks!

ValveSoftware / unity-xr-plugin

Editor crash when using terrain with XR plugin and multi pass rendering #38