Create new sub meshes inside Unity for any model. Assign your materials with ease.
✔️ Super easy to use.
Draw on the mesh and then pick a material. Done.
✔️ None-Destructive workflow
Automatically generates a new mesh asset (.asset file). Your original asset remains the same.
✔️ Skinned Mesh Support
Keeps all your bone weights and animations intact.
⚠️ The .obj file format does not support bones or animation. Thus, that information cannot be exported as obj.
✔️ Brush for high-poly meshes
Though you should keep it under a hundred thousand triangles for best performance.
✔️ Undo/Redo for selections
✔️ .OBJ Export
In case you need to pass your new mesh around.
✔️ Full Source Code included!
I publish this asset with full source code because as a developer I know how annoying it is to not have source code access. If you like it then please remind others to purchase the plugin. Don’t just copy and paste it everywhere. Thank you ❤️
✔️ Supports Unity 2020, 2021, 2022, … LTS
⚠️ This is NOT a runtime system. It is EDITOR only.
Polygon Material Painter – Sub-Mesh Editor v1.5.2 (08 Sep 2025) introduces a powerful, non-destructive tool for creating sub-meshes directly within the Unity Editor. With intuitive drawing and material assignment, users can easily define distinct material regions on any mesh. The tool supports skinned meshes, preserving bone weights and animations, making it ideal for character and animated assets. While .OBJ export is available, it does not retain bone or animation data. A brush system allows precise editing on high-poly meshes, though performance is optimized for models under 100,000 triangles. All selections support undo/redo functionality, and the plugin generates new mesh assets without altering the original. The editor-only nature ensures stability and performance, and full source code is provided for transparency and developer flexibility. Compatible with Unity 2020, 2021, 2022, and later LTS versions.
Polygon Material Painter – Sub-Mesh Editor v1.5.2 (08 Sep 2025)