Unity Editor tool for applying face tracking patches to VRChat avatar FBX models.

Patcher Hub streamlines the process of applying HDiff-based binary patches to avatar models, with integrated VRChat Creator Companion (VCC) package management, dependency validation, and automated scene setup.

• One-Click Patching — Apply face tracking patches to FBX avatar models with a single button
• Batch Patching — Select and patch multiple avatar configurations sequentially with dependency ordering
• Package Validation — Automatically checks required VRChat packages are installed and up to date
• VCC Integration — Install, update, and manage packages directly through the VRChat Creator Companion API
• Source File Validation — MD5 hash verification ensures original avatar files haven't been modified before patching
• Automatic Scene Setup — Creates a new scene with all patched prefabs arranged in a grid layout for quick testing
• Cross-Platform — Includes hpatchz binaries for Windows, macOS, and Linux

1. Download the latest .unitypackage from Releases
2. In Unity, go to Assets > Import Package > Custom Package...
3. Select the downloaded file and import all files

Clone or download this repository into your Unity project's Assets/!Pawlygon/PatcherHub/ folder.

1. Open the tool via Tools > !Pawlygon > Patcher Hub
2. The window automatically detects all FTPatchConfig assets in your project
3. Select which avatars to patch using the checkboxes
4. Review any package warnings or errors shown in the UI
5. Click Patch Selected Avatars to apply patches
6. A new scene is created with the patched prefabs ready for testing

1. Right-click in the Project window
2. Navigate to Create > Pawlygon > FaceTracking Patch Config
3. Configure the avatar name, version, original FBX reference, and diff files
4. Click Generate Hashes to enable source file validation

• Unity 2022.3 or later
• VRChat Creator Companion (for package management features)

• Hash's EditDistributionTools — Inspiration for distribution workflows using binary patching
• hpatchz — High-performance binary diff/patch library by housisong
• ikeiwa VRC Package Verificator — Inspiration behind our package checking feature
• VRChat Creator Companion — Package management integration
• Furality SDK — VCC package import implementation
• tkya — Countless hours of technical support to the community
• VRChat Community — Feedback, testing, and feature requests

Thank you to everyone who helped make PatcherHub possible!

This project is licensed under CC BY-NC-SA 4.0.

HDiffPatch (hdiff/hpatchz/) is distributed under the MIT License.

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Made with ❤ by Pawlygon Studio