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Using a rendertarget makes my graphic driver crash. But only in baked game not in editor.

Hi. i have a random crash and have run out of ways to try to debug it. It looks like it has to do with a rendertarget i am using. I only get the crash in a baked game never in the editor.

I am running it in vr and all of a sudden everything freezes. Sometimes i can use it for a few minutes and sometimes just a few seconds. It looks to be related to my foliage but i cant confirm that to 100%.

I have tested on different drivers and different PCs with the same result.

The only info i get from the log is: [195]LogD3D11RHI: Timed out while waiting for GPU to catch up. (0.5 s)

Product Version: UE 4.15
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asked May 11 '17 at 08:59 PM in Bug Reports

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avatar image MagnusAnder May 12 '17 at 11:08 AM

quick update. I tested it now on with a AMD card. however this test was not using a Vive like the other tests. I was not able to get the crash. I hope to do some more tests with AMD + vive this weekend.

avatar image AndrewHurley May 17 '17 at 07:10 PM

Hey MagnusAnder,

Please provide us with the full crash logs produced from the callstack as well as your 'dxdiag' so I can see if what you are reporting is a known issue.


Andrew H.

avatar image MagnusAnder May 17 '17 at 07:25 PM

Hi Andrew. I hope this is what you need.

LoginId:292d14594625f7bbeb105b9349a4f59a EpicAccountId:9048b4619868450da6ab78e0cce8528a

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avatar image MagnusAnder May 23 '17 at 09:22 AM

Any updates on this? And is there anything else I can do to try and help out?

avatar image AndrewHurley May 25 '17 at 09:32 PM

Hey Magnus, I need a way to reproduce the issue in a minimal test project, or some steps so I can get the crash to occur on my end.

If you completely disable the render target in question, does you project run correctly and no longer crashes?

avatar image MagnusAnder May 25 '17 at 09:41 PM

I might have some good news. I tested building with the 4.15.3 hotfix and no crash jet. Only tested for about 30 min. I will let you know after another build.

To answer your question: It only crashed when i was using a scene capture component2d. if i had that disabled I did not get the crash even if i still had a material displaying the rendertarget.

avatar image MagnusAnder May 30 '17 at 08:56 PM

Nope.. :( just got the crash again. It's so random so i'm not sure on how to make a good repro for it.

here is all the info i have: i'm using forward rendering i have a rendertarget that i use as a sight. i only get the crash when my scene capture component 2d does "capture scene" I'm not getting the crash as soon as i enable the capture component but it seems to be related to loading/streaming because it tend to happen when i look around. Settings on the Capture component: FOV 10 Capture source: SceneColor (HDR) in RGB, 0 in A Capture every frame = False Capture on Move = False

the rendertarget is 512x512 shared is true now, tested without also. the rest is default settings

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Hey Magnus,

Any update to the reproduction process?

I've attempted your steps, but was unable to get the crash to occur. If you do manage to isolate a solid repro case for the crash we can reopen this issue and continue with the reporting process.

Thank you,

Andrew H.

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answered Jun 29 '17 at 07:14 PM

avatar image MagnusAnder Jul 10 '17 at 09:50 AM

Hi. I have not manage to isolate the issue. However i did update to 4.16. Only managed to have one playtest for about an hour but i have not got any graphic driver crash. I did get a physics crash thou that i need to look into.

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