5.5 DLSS Crash

Development Rendering
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1

GPU crashes happend during DLSS pass,

3060, 3060Ti, 4060,4060Ti

2

重现步骤
Using UE 5.5 DLSS Plugin，and the most recently version NVIDIA driver

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3

Hi,

Unfortunately, with the information provided, I cannot give you any concrete advice on what is causing the crash. Please send us a call stack of the application during the crash. Does your game also crash if the DLSS plugin is disabled?

4

​Hi, we have the same crash. Here is the log:[Image Removed]

5

Hi,

Based on the breadcrumbs in the log, this issue is an error inside the DLSS plugin (the GPU is trying to access the DLSSOutputSceneColor and failing). As we do not maintain the DLSS plugin, I can’t help you any further. The only other suggestions I have are:

  1. Try to block the latest drivers for the affected GPUs by modifying the BaseHardware.ini and see if the crash goes away
  2. Contact Nvidia directly for assistance.

Let me know if you have any further questions.

6

The DLSSOutputSceneColor was created before ExecuteDLSS, and DLSS writes data to it in the third-party library. Then the resource was returned to AddThirdPartyTemporalUpscalerPasses. I guess RDG may not be able to track resources in third-party libraries.

We finally fixed it by adding a small copy pass before ExecuteDLSS (write some data to DLSSOutputSceneColor). Is there a better solution?

7

Thanks for the extra info. The RDG should be able to track the lifetime of a resource that is handed off to a third party library. I wonder why just adding a copy pass for that resource would be enough to fix this. Perhaps a barrier or descriptor is not setup correctly. Can you send me the full logs of this crash with -gpucrashdebugging and -rdgvalidation enabled?

8

Hi, I reproduced this crash, and the relevant crash information is in the log.