Ray tracing crashes

Unity Engine
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1

Hello everyone!

First in the forum, so excuse me if this has been already mentioned. I have spent a couple of days playing around with ray tracing in unity 2019.3. So far so good, except the fact that when I try to change the number of bounces in the ray traced GI (even from 1 to 2) my computer completely freezes. I have and RTX6000.

What is the default number of bounces before you enable the override?

Also, when setting a new material and chane it’s rendering mode to Ray tracing, it just disappears.

Anyone else facing these issues?

2

I can confirm. Moving the bounces to override 2 crashes unity and corrupts my project.

i9-9900k, RTX 2080, 32gb ram.

1 Like
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Can confirm, Titan Rtx, ryzen 3900x

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By the way, raytracing has its own forum:

2 Likes
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Yes, it’s an issue we already encounter. Was able to reproduce and a bug report is already filled.
Which version are you on ? (I tried on 2019.3.0f2 and HDRP 7.1.6)

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Happened on 2019.3b12 w/ 7.1.5. Still happening on 2019.3.0f1 w/ 7.1.6.

Note that the project corruption that I mentioned previously is not occurring on the 2019.3.0f1 build.

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Thank you JPollard

I think when you try to open the project after the crash, Unity reopens the last opened scene with the 2 bounces on the GI so it crashes again.
The workaround for now (until the issue is resolved) is to delete the file “LastSceneManagerSetup.txt” in your library and create a new scene OR edit the bounceCount override setting (via a text editor) in your volume file .asset back to 1 before opening the project

1 Like
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Thank you b4cksp4c3.

For me its v. 2019.3.0b10 w/7.1.1.

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In the meantime, while we are working on a fix, It appears that some Nvidia drivers are better than others.

For example, the latest driver version in which I can’t reproduce the bug is the Geforce Driver 436.30 released 09/10/2019 (on a 2080Ti)

10

Unity crashes for me whenever I try and adjust the size of a panel. Anyone else?

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Could you provide more information like the version your using (Engine + HDRP package), hardware, repro steps ?
Also, if you have a repro project it would help us understand what’s happening. Thanks