lvra.gitlab.io/content/docs/vrchat/unity.md

weight	title
900	Unity

Unity

For the best experience, we found that running Unity from Flatpak is usually preferred.

You have two options for setting up VRChat avatar/world projects:

1. vrc-get CLI, a native FOSS package manager written in Rust
2. LinuxCreatorCompanion GUI, which runs VRChat Creator Companion with Linux-specific patches

Option 1. vrc-get

First, take a look at this page from the official VRChat docs about the Unity 2022 upgrade. We'll do something similar.

1. Install Unity Hub from Flatpak.
2. Install the 3rd party VRChat package manager vrc-get.
   • You can install via cargo install vrc-get.
   • Or, install this AUR package: vrc-get AUR.
   • Or, you can run the binary from the releases page.
3. Open Unity Hub and sign in with your Unity account.
4. Install 2022.3.6f1 (the current supported Unity version, at the time of writing) by running xdg-open unityhub://2022.3.6f1/b9e6e7e9fa2d.
5. When prompted, select Android Build Support and Windows Build Support (Mono).
6. Create a new project with the 3D Core template, making sure to name it and give it a better location than $HOME.
7. It may open windows partially offscreen. If this happens, see the
8. Close the Unity project (will probably crash later if you don't, no big deal but still).
9. Open terminal and cd to the project dir.
10. Run either vrc-get install com.vrchat.avatars or vrc-get install com.vrchat.worlds depending on what you will be making.
11. Reopen the Unity project and it will import the new packages.
12. Go to VRChat SDK -> Show Control Panel and dock it to the main window.

Now you should be able to create and upload avatars and worlds like you normally would.

If you're having issues, see the Troubleshooting section.

Option 2. LinuxCreatorCompanion

If you prefer GUIs, it is now possible to use VRChat Creator Companion (VCC) on Linux.

The official VRChat Creator Companion uses Webview2 (Microsoft Edge). This component is difficult to install, and doesn't run natively. Instead, you can use LinuxCreatorCompanion.

GitHub repo for LinuxCreatorCompanion

It works by using wine to extract the necessary bits to re-embed into a native client application. While experimental, you can enjoy much easier avatar, world, and asset creation. Again, this is experimental, and we discourage you from trying this on important projects. Remember to make frequent project backups. Please leave any feedback about bugs or ideas on the GitHub issues tab.

To install, click the releases tab, download the zip, extract it somewhere, and run ./LinuxCreatorCompanion.

Note: If you're using Unity Hub via flatpak, it will have trouble finding and opening Unity. For now, create this wrapper script, chmod +x it, and put it somewhere in your PATH, like /usr/local/bin/unityhub.

#!/usr/bin/env bash
exec flatpak run com.unity.UnityHub "$@"

VRCSDKonLinux

• For world projects, import WorldSDKPatch.unitypackage: https://github.com/thegu5/VRCSDKonLinux/releases
• For avatar projects, import AvatarSDKPatch.unitypackage: https://github.com/Bartkk0/VRCSDKonLinux/releases

These will mod the appropriate VRCSDK methods to apply several fixes:

• Make AssetBundle building be case-sensitive-aware
• Let Build & Test copy local avatars to the correct directory (WIP?)

Troubleshooting

AssetBundle was not built

When building and uploading, this error message may appear. It's caused by VRCSDK building an AssetBundle whose filename has mixed caps, when Unity AssetBundles are really only supposed to have lowercase filenames.

To fix this, see the VRCSDKonLinux section.

Shaders fail to include some .cginc files

This can happen with Poiyomi. It's caused by case-sensitivity. You may need to edit the shader files directly. Open them in any text editor, and correct the casing of filenames.

Editor windows appear partially offscreen

Unity may open undocked panel windows (such as color pickers and unitypackage import dialogs) partially offscreen.

Some workarounds:

• For KDE, hold the Super key and click anywhere in the window to drag it back onscreen.
• For KDE, press ALT+F3 -> More Actions -> Move.