Bug ShaderGraph files keep being unrecognized after upgrading to 2020.2

I've recently upgraded from 2019.4 to 2020.2 and Unity has stopped recognizing my ShaderGraph shaders a few times. That is, the assets in the project window show them as unrecognized file types, and the geometries when rendered are that beautiful hot 404 pink

EDIT: I've noticed this happening after I return to Unity having made changes to script files and Unity goes through the process of inspecting/compiling. These script changes have nothing to do with the materials or the render pipeline whatsoever.



ShaderGraph 10.2.2 and URP 10.2.2 are both still installed when this occurs. And I'm not seeing any errors or anything in the console, so I'm not sure how to debug this.



When I close and reopen the project / unityHub et al, nothing is changed. They're still unrecognized.

But it's fixed if I Uninstall the URP and Shader Graph packages, and then reinstall Shader Graph and then URP in that order. Also strange is that when I reopen the project having done this, the Shader Graphs are still recognized, so there's some information saved/cached somewhere about having fixed it. It's not a change that Git recognizes, and I'm pretty much using Github's .gitignore Unity template without many changes.

This is pretty irritating.

Aside: There have been many weird in the upgrade from 2019 to 2020. I've tried many approaches as well: e.g. via simply reassigning the project version in UnityHub, or also starting a fresh project in 2020 and dragging in Assets and whatnot after the fact. It's been challenging given my project's requirements: URP + PostProcessing, ARFoundation, and a host of Google Firebase components... and all of these things don't always play nice together.

Anyone seen anything like this / any potential fixes?

 

I've also had similar issues with 10.x in particular. Made me stay in 8.x ... really annoying and I had trouble reproducing the issues, but I definitely had them multiple times.

 

To clarify, the 10.x and 8.x are versions of URP, right? Did you ever actually upgrade successfully?

Also did your problem happen on all shadersgraph assets, or just the ones that had originally been created in another version of Unity?

 

similar issue here, do you get an error "ArgumentException: JSON parse error: The document root must not follow by other values." when clicking "Open Shader Editor" in the inspector on one of the broken assets?

 

I'm also having the same issue. Have to uninstall and reinstall URP and shader graph packets, then check the assets that have reverted away. Have you reported it as a bug yet?

 

Yeah, I reported the bug via the Unity Editor affordance. I'm not sure if that's still the best way to get in their queue. I imagine that having other people +1 the post is helpful. Thankful that unlike the bug report, this can grow to collect more granular detail from others.

 

True. I'd love to know if you hear back from them. I have to uninstall and reinstall URP / SG up to a couple times a day because of this, which isn't awesome.

 

To continue production I've had to drop back to 2019.4 unfortunately, but if you open the offensive shadergraph in a validator that would give someone who decides to attack this bug some good clues for bug-fixing

 

Awesome

 

Hi @UnityMaru,
any sense if this is being worked on?
Uninstalling and reinstalling URP constantly is a game stopper and is keeping us from moving to 2020 (in 2021 ).

 

Thanks for this

 

Well, I don't think we're going to get a definitive answer for this. However, I upgraded to 2020.3.0 LTS, URP 10.3.2, shadergraph 10.3.2 and I've yet to have an issues. It's only been a few days, however that's longer than I lasted with previous versions.

 

Going to do the same! Hopefully it's stable.

 

+1

I just had this problem after updating from 2021.2.13f1 to 2021.3.3f1.

On ShaderGraph 12.1.6 and URP 12.1.6

Also, have this error: (though I am not sure it's related)

Code (CSharp):

1. Library\PackageCache\com.unity.entities@0.50.1-preview.2\Unity.Entities\RetainBlobAssetSystem.cs(6,5): error SGICE002: Seeing this error indicates a bug in the dots compiler. We'd appreciate a bug report (About->Report a Bug...). Thnx! <3 System.IO.IOException: Cannot create 'C:\...\Library\Bee\artifacts\1900b0aEDbg.dag\Unity.Entities.AdditionalFile.txt' because a file or directory with the same name already exists.