Hello! It's funny you ask this now, because I'm on Cohost taking a break from hyperfixating on my second 3D avatar for use in social VR (including VRC and Resonite). I'll walk you through all the steps I've observed from what I've done so far -- keep in mind that I'm very far from knowing everything, but I do share your stance on external tools doing heavy lifting. It's much more satisfying to know you've glooped your Scrumblo Scrimbly from thin air, no?
I'll be trying to keep the workflow as loose as possible, so you can create whatever you'd like. I will, however, be linking to videos that are specifically about creating one model -- I'd recommend gleaning whatever you can from each and applying them to your own work.
If this helped, feel free to share with other folks if they ask how you made your awesome avatar to save yourself the trouble of typing out something like this on your own!
Full list, including ramblings (and dropdown menus, for ease of reading) in the Read More.
We wrote a post on the uploading to VRChat bit, although it is now in need of an update with VRC switching to Unity 2022.
(Currently it seems to be struggling with updates from Macs on 2022, have not tried Linux, but Windows works)
But yes, Resonite is simultaneously a lot simpler and more fiddly. All you technically need is the FBX (assuming a well structured armature) - you drag it in, specify it's an avatar, and then use the Avatar Creator tool to assign the head and hands location.
However, if e.g. your materials aren't included in the FBX, what then follows is trying to drag and drop textures that appear as objects in a 3D space around you into specific parts of a window that's also a 2D plane in a 3D world.
For people used to the workflow, I'm sure it can be faster - but I would only recommend even trying either in VR or on a large desktop screen with a proper mouse available.
It's really hard to see things on laptops (or worse, on Steam Deck), and some trackpads just cause problems with dragging and dropping.
(It is possible I've missed something of course, but I so rarely see friends in Resonite vs VRC so have not put as much effort into learning the quirks)
