MTree - Open Source

December 30, 2025 ยท View on GitHub

MTree is a powerful tree creation tool for the Unity Engine. It allows you to create procedural trees directly within the Unity Editor, complete with wind animation, LODs, and mesh merging.

Originally a paid asset, the original developer (MaximeHerpin) has allowed this tool to be released as Open Source under the MIT License.

Features

  • Procedural Generation: Create unique trees using inspector-based workflows.
  • Mesh Export: Export your generated trees to standard Mesh format to use in your projects without needing MTree scripts at runtime (except for wind).
  • MeshLOD: Support for MeshLOD and GPU Resident Drawer.
  • Wind System: Includes MTreeWind.cs for vertex-displacement wind animations.
  • LOD Support: Automatically generates Levels of Detail with dithered corss-fade.
  • Full Source Code: Modify and extend the tool as needed.

Compatibility

  • Unity Versions: Compatible with most Unity versions including Unity 6.
  • Render Pipelines: Works with all Built-in, URP, and HDRP pipelines.
    • Note: The materials rely on Shader Graph. You must have the Shader Graph package installed.
    • The provided Shader Graphs are compatible across pipelines, but ensure your project is set up to handle Shader Graph materials.

Installation

Option 1: Install via Package Manager (Git URL)

  • Open the Package Manager and select Add package from git URL from the add menu.
  • Enter https://github.com/Warwlock/MTree.git to install this package.
  • If Unity could not find git, consider installing it here.

Option 2: Install via UPM

  • Go to Edit --> Project Settings --> Package Manager
  • Under Scoped Registries create a new one.
  • Enter this:
    • Name: Warwlock
    • URL: https://registry.npmjs.com
    • Scope(s): com.warwlock
  • Go to Window --> Package Manager and under My Registries, install MTree package.

Option 3: Manual Install

  • Download the source code as a ZIP file.
  • Extract the folder into your Unity project's Packages folder (e.g., Packages/MTree).
  • If you want to add it to Assets folder, rename Samples~ folder to Samples to include tree templates.

Include Tree Templates

  • Go to Package Manager and select MTree package.
  • Under the Samples tab, import Example Templates.

Documentation

https://github.com/Warwlock/MTree/blob/main/Documentation~/Documentation.md

Contributing

Contributions are welcome! Since this is now an open-source project, feel free to submit Pull Requests to fix bugs, clean up the Shader Graphs, or improve the overall tree generation system.

License & Origin

This project is a community-maintained version of MTree.

Note: The original developer stated: "Whoever reads this and has a version of MTree has my permission to publish it with a MIT (or equivalent) license."

Big thanks to mherpin for creating this tool and giving it to the community!