Light Propagation Volumes (GI) causes game to crash in VR-mode

anonymous_user_658e9310 · May 18, 2014, 7:39am

I know it is only an experimental feature, but it seems VR-mode and Light Propagation Volumes are not going well together. As soon as I enter VR-mode, the game crashes.

Other than that, Light Propagation Volumes is realy impressive, I love it.


Rendering thread exception:
Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.1\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 518]
Array index out of bounds: 1 from an array of size 0
Stack:
Address = 0xec9b3f36 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0xec852bb5 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0xe662d90c (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Renderer.dll]
Address = 0xe662cede (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Renderer.dll]
Address = 0xe65cdfbf (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Renderer.dll]
Address = 0xe64f4d19 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Renderer.dll]
Address = 0xe65e2c5d (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Renderer.dll]
Address = 0xe65b504d (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Renderer.dll]
Address = 0xec740732 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0xec7408ed (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0xef675bd3 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-RenderCore.dll]
Address = 0xef676039 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-RenderCore.dll]
Address = 0xec9b1ae9 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0xec9aafa1 (filename not found) [in C:\Program Files\Unreal Engine\4.1\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x7765652d (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x7778c541 (filename not found) [in C:\Windows\SYSTEM32
tdll.dll]
Address = 0x7778c541 (filename not found) [in C:\Windows\SYSTEM32
tdll.dll]

Kris · May 19, 2014, 12:35am

Yeah, a few things don’t like stereo/VR at the moment

If you haven’t already, it’d be a good idea to submit to the bug section on the UE4 answerhub.

anonymous_user_759e5c3a · May 23, 2014, 5:53pm

Hey Jomou,

Thanks for letting us know about this. We actually had someone else report it a couple of weeks ago and we were able to reproduce it. There a report in for it assigned to a dev, so once they have a to fix it, they will. LPVs are, as you said, experimental and not well tested. I encourage you to let us know about anything else you encounter, good or bad, as we would like to see feedback on both Oculus integration and LPVs.

n00854180t · June 16, 2014, 7:26pm

Any word on this?

I recently found out that it seems Lightmass is having problems with enclosed spaces. I’m making a game that takes place entirely inside, so the light leaking on static meshes with Lightmass is not going to work for my purposes.

LPV is the natural answer to needing dynamic lighting, but if it doesn’t work with the Rift…

Any we might get more information on where the problem exists, so that community members could perhaps also try and fix it?

anonymous_user_759e5c3a · June 17, 2014, 6:46pm

Our Oculus developer and rendering developer are looking into still. As we move forward with support for in the editor, we will begin properly implementing it for oculus usage as well.

n00854180t · June 17, 2014, 6:58pm

Cool!

Are there any issues/work the community could do on from the repo? I’d love to contribute, since it’s directly applicable to my game.

DFin · June 19, 2014, 3:46pm

I really hope gets fixed soon. The GI really looks promising for what i do, but i like to be able to check performance for stereo rendering.

anonymous_user_8acee6f7 · July 16, 2014, 9:50pm

Has issue been solved in the Unreal Engine 4.3 ?

Boompit · July 17, 2014, 5:58pm

Doesn’t seem like it. Light Propagation Volumes crash everything and its fix is only coming in the next update (4.4) Hopefully there will be a hotfix soon

anonymous_user_759e5c3a · July 18, 2014, 1:39pm

Hey guys, I checked our bug report on and I am pleased to say that a programmer has marked it fixed for an upcoming version of the editor. It just barely missed the cutoff for 4.3, so we are hoping to push it out very soon.

Xodroc · July 19, 2014, 2:00am

Thanks for the update, much appreciated!

Boompit · July 19, 2014, 7:46am

Thank you!

anonymous_user_8acee6f7 · August 23, 2014, 5:23am

It is working now, and it is gorgeous, but its rendering only on one eye (left eye) for me.

anonymous_user_d6c46979 · September 24, 2014, 12:08am

Same here. Only rendering in the left eye with 4.4.3 - can we get an update on please. Really keen to use it for VR.

anonymous_user_759e5c3a · September 24, 2014, 5:41pm

The issue with it only rendering in one eye is part of the general bug of certain effects only rendering in the “primary” camera. is being addressed and once it is fixed, UMG, HUDs and LPV will render in both eyes.

n00854180t · September 24, 2014, 7:16pm

Will those fixes be going into 4.5?

anonymous_user_759e5c3a · September 24, 2014, 8:30pm

They didn’t make it into that update. It is something that is getting a lot of focus for a future release, but it is a big project for the rendering team to build, test and implement. I’ll see about getting more specific information about a timeline, as is an issue that comes up frequently.

n00854180t · September 24, 2014, 9:53pm

Awesome, thanks .

I don’t mind using the latest Github code, either, if it is going to make it into there significantly earlier than a released build.

3dlight · September 29, 2014, 1:17am

I’m looking for feature to stabilize too. Thanks for the info! While would require some serious Graphics Horsepower in the rift, I imagine… it would eliminate the need for lightmap UV’s… so lots of man-hours gone!

studdart · June 13, 2015, 12:00am

Sorry to resurrect thread, but still seems to be the case in UE 4.8. Is there a setting I’m missing or are some effects still left eye/primary camera only?