Vulkan Crash in experimental with large project

Bugs
1

Hello,

I have a relatively large project in which I have a bunch of different things going on, hard to send a small version of this. I get a seemingly random crash (it can happen if I dive into a COMP with a lot of operators or it can just happen after a little while, like 2-3 minutes). I tried raising the TDR delay and it didn’t fix anything here. I get no crash file sadly, but it does say that it’s due to a vulkan error. Here’s an nvidia aftermath debug file from one of the crashes.

Thanks

Alex

3

I was missing some files in that last post, here you go

TouchDesigner-14992-1.nv-gpudmp.zip (62.6 KB)

4

Hello @alexandrelu

It looks like a hang could be happening in a Line Smooth POP instance in your project. Does this help you narrow down where the problem could be?

5

So I did some more digging and figured out that this was coming from the line smooth POP (makes sense based on what I see in the outputs of nvidia aftermath). I’m pretty sure it’s coming from a line smooth that is connected after a trail POP. I will now try to reproduce the crash in a smaller test project

7

Hey @Guillaume.L

Here’s a simplified component that has a line smooth that will cause the crash in question! It can take something like 30 seconds to a minute to actually crash sometimes.

I saved this in the latest release 2025.31500

baseLineSmoothIssue.tox (6.8 KB)

8

Thanks for the example @alexandrelu. The next build we release will have a fix for the problem.