Unity 6 Adaptive Light Probe Bakes Failing

Unity Engine
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1

Hi everyone,

I upgraded my project to Unity 6000.0.31f1 and I have an indoors level using the URP that is on the larger side. In trying to leverage the new adaptive light probes to make this process much quicker I’ve run into two errors when trying to bake. (I’ve already made sure to switch my URP render asset to use adaptive light probes, and have created a single adaptive probe volume game object within my scene)

My computer is pretty decent (16GB ddr4 memory, a GTX 1080TI, etc…) so I don’t think it’s necessarily too weak either if I had to guess.

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go494×599 47.5 KB

I typically get the error “failed to extract inputs.system.threading.threadhelper:threadstart ()”.

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Or I get an “Out of memory” error.

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If anyone has any ideas on what’s going on here, any help is greatly appreciated.

2

Sad that you didn’t get a reply, i’m getting this too, even now on the latest version. My laptop has 40gb RAM and a GTX 4060 so it’s definitely not weak lol

3

If you are still facing the issue, the best you can do is submit a bug report. I don’t believe we ever got one on this issue.

4

Hey there!

Sorry to hear you’re having a similar issue. The good news Is that I ended up figuring it out and realized that I was using the “Bakery” asset instead of using unity’s default light baking system.

I contacted the assets developer and he pointed me to a preview build of Bakery where he added experimental APV support which is what ended up making it work for me after playing with it for a bit.

If you or anyone else who comes across this is interested, the patching instructions should be found here: Github access - Bakery GPU Lightmapper: Wiki

For more info he wrote more about Bakery’s current APV support and it’s limitations here:

5

Hello, thanks for reaching out! I’ve thankfully solved this issue on my end. You can see my other post to Mashimaro71 here for more details.

Thanks

7

Sorry, accidentally deleted that reply.
I have submitted multiple bug reports, not sure why you haven’t gotten mine, i’m in touch with an agent but they haven’t been very helpful tbh lol
One thing i noticed is once it gets to the subdividing step, memory usage goes through the roof. I opened task manager and saw it go from 3gb to 20gb, and then it gives an out of memory exception and stops, AND the memory usage never goes back down… Like, even though it’s not baking… i waited like 10 minutes, there was no baking probes going on, yet the memory usage consistently stayed at 20gb. So what i can imagine is happening is there’s a lot of tasks being lined up that are never ending. Smaller scenes seem to bake just fine, but big scenes don’t.

8

Thanks for the reply, no i am not using any external plugins, i get this error with the unity default lightbaking.

9

Do you have the incident numbers / IDs? then I can check the status

10

Yes, it’s IN-89082, now i just remembered it started with another error related to adaptive light probes baking and that’s why you might not have been able to find it