Optimization, Analysis and Testing

[madjin]

• Validation tool for avatars (can be made for Blender export validation/ Unity import validation)
• Prototype and test performance in existing game engines, including various material types and shaders for garment representation
• Best practices for mesh/texture optimization/compression

[madjin]

VRM Validator

• Github: https://github.com/mrxz/vrm-validator - Tool to validate VRM (glTF + VRM extensions) assets.

Pros

• Based on glTF validator
• Open source
  Cons
• No visualization
• Lacks guidelines / recommendations for optimization

Example with VRM 1.0 file (Seed-san)

Hyperfy Validation

Pros

• Can see performance ranks / guidelines
• Can walk around to test / visually see issues
  Cons
• Closed source

VRChat

• Docs: https://docs.vrchat.com/docs/creating-your-first-avatar

Pros

• Highly adopted for custom avatars
• Great plugin to convert between VRChat / VRM: https://github.com/esperecyan/VRMConverterForVRChat
• Shows performance ranks / guidelines for recommendations
• Good documentation across the internet
  Cons
• VRChat SDK is closed source
• Can't upload custom avatars as new user (needa spend like 10 hours in there)
  • Some of us can help test though, I have 1700+ hours in VRChat

[madjin]

It was suggested to scope out an open source avatar validation tool for reliable import and export from popular authoring tools such as Blender, I have some links and research to such as well.

Question / Task

Are there any short-term deliverables that we can scope out which can drive well-defined interoperability benefits for this?

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Notes

Saturday06 plugin has such: https://github.com/saturday06/VRM_Addon_for_Blender

When importing a VRM it reads the metadata

Before exporting a VRM you can validate it

UniVRM is a standard reference implementation for VRM, very reliable: https://github.com/vrm-c/UniVRM

Also worth looking into VRMConverterForVRChat for exploring how open interoperable standards can benefit creators.

These two web based validators are good for validating glTF assets (wearables typically) and VRM avatars

• https://github.khronos.org/glTF-Validator/
• https://github.com/mrxz/vrm-validator

The best CLI option is gltf-transform, having VRM support with it which could aid in converting from 0.x to 1.0 would be useful
https://gltf-transform.donmccurdy.com/cli.html