[4.8.1]: 'hmddbg showcamera on' crashes editor on exit

Development Platform & Builds XR Development
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1

Hi there,

with ‘hmddbg showcamera on’ it’s possible to see the tracker’s view frustum in VR mode. If this is active when exiting PIE session, it crashes the whole editor.

It’s also not possible to create a workaround by deactivating this automatically on end, there is no bindable event like ‘onExitGame’ exposed for blueprint and catching ESC as input node doesn’t work in the editor either.

Oculus SDK: 0.6.0.1

Crash log:

MachineId:09466ED14773200D475C1E8762FE17BF
EpicAccountId:fba125fe5ed14161aba1305f0b491147
Access violation - code c0000005 (first/second chance not available)
“”
UE4Editor_Core!FRotator::Quaternion() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\math\unrealmath.cpp:304]
UE4Editor_OculusRift!FHeadMountedDisplay::DrawDebugTrackingCameraFrustum()
UE4Editor_OculusRift!FOculusRiftHMD::DrawDebug()
UE4Editor_Engine!UGameViewportClient::Draw() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\gameviewportclient.cpp:1215]
UE4Editor_Engine!FViewport::Draw() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\unrealclient.cpp:1001]
UE4Editor_Engine!FSceneViewport::ResizeViewport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\slate\sceneviewport.cpp:1058]
UE4Editor_Engine!FSceneViewport::SetViewportSize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\slate\sceneviewport.cpp:1012]
UE4Editor_OculusRift!FOculusRiftHMD::DoEnableStereo()
UE4Editor_OculusRift!FOculusRiftHMD::OnEndPlay()
UE4Editor_UnrealEd!UEditorEngine::EndPlayMap() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\playlevel.cpp:81]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorengine.cpp:973]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedengine.cpp:366]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2359]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

2

Hello ,

I was able to reproduce this issue on our end. I have written up a report ( UE-17991) and I have submitted it to the developers for further consideration. I will provide updates with any pertinent information as it becomes available. Thank you for your time and information.

Make it a great day

3

Hi there,
Just having problem using 4.8.1. On launch it crashes. I cant even open sun temple project. I have re-install UE more than 3 times.

4

Hello ,

The issue that you have mentioned in your comment is not related to this post. I will need you to make a new thread for tracking purposes . I have a few questions for you that will help narrow down what issue it is that you are experiencing. You will need to post the answer to these questions in the new thread.

Quick questions:

  1. Could you provide your dxdiag?
  2. Could you provide the crash logs that are being produced by your crash?
  3. Have you tried opening other projects to make sure this is not project specific?

Make it a great day