2018.26450 - Crash when loading environment map

Bugs
1

Hello,

In the last few builds, it happened quite a few times that my instance of Touch would just crash without any error message or CrashAutoSave. It hangs for a few seconds and then close just like if the process was killed.

I was able to find a specific case that will cause a crash:
When using an high res TOP (20k * 10k in example) as an environment map on the Environment Light COMP, a crash occurs.

I was suspecting some kind of memory problem with my GPU (8gig GTX 1080, driver 416.16) but was able to reproduce in an empty file.
It seems that a texture of 12k by 6k will already trigger the crash.

Is there a limitation on the GPU or the Environment Light that I should be aware of ?

I’ll keep tracking other similar bugs when they occur…

Thank you for your time,
Michel
environmentMapCrash.toe (3.7 KB)

2

Likely the GPU driver is timing out when doing the precomputation for the env map.
Can you try tweaking your timeout values as described in this article?

pugetsystems.com/labs/hpc/W … ience-777/

3

Seems like you were right, thanks. It does solve the crash, but it is hanging for a while ^^’

Any possible fix on your end to avoid Touch to crash when a timeout occurs ?

Thanks,
Michel

4

I’m not sure if it’s possible, I think it’s just the way Windows handles an app that it thinks has hung during a GPU operation. In this case it’s a heavy computation. I’ll try and see if I can split up that operation into smaller ones so we don’t seem like we are hanging.

5

Amazing, thanks for looking into that !