Ucupaint
Ucupaint lets you paint and manage texture layers in Blender using Eevee and Cycles.
Maintained by ucupumar
Last updated: April 8, 2026
Some preparation needed
This add-on works on farms with the right setup. Review the packing steps and warnings below before submitting.
What It Does
Overview and common use cases for this add-on.
- It integrates seamlessly into your existing shader node workflows.
- The add-on has been in development for years, offering a range of user-friendly features.
- It supports layer-based painting, making complex material creation easier.
Common Use Cases
- Create detailed textures for 3D models with multiple layers.
- Paint vertex color masks directly in sculpt mode.
- Set up real-time displacement layers for dynamic surface details.
- Use vector displacement maps as sculpt layers for intricate designs.
- Integrate Ucupaint nodes into any existing node setup for flexible material design.
Getting Started
How to install and start using this add-on in Blender.
How To Install
- Open Blender and go to the Edit menu, then Preferences.
- Select the Add-ons tab and click on Install.
- Navigate to the downloaded Ucupaint ZIP file and select it.
- Enable the add-on by checking the box next to its name in the list.
First Steps After Installing
- Open the Shader Editor in Blender and add a new material to your object.
- Locate the Ucupaint node in the Add menu and integrate it into your shader setup.
- Begin painting by creating and stacking texture layers within the Ucupaint interface.
- Experiment with different layer effects to achieve the desired material look.
Using On A Render Farm
What render farm submitters need to know before sending jobs.
We could not inspect this add-on's code. Install it on your farm workers and run a single-frame test job before committing to a production render.
Scene Prep Checklist
Complete these steps before uploading your scene to a render farm.
- 1
Install the same add-on version on every render worker
Required - 2
Include all .blend asset files referenced by the add-on
Required - 3
Confirm all external tools are available on render workers
Required - 4
Run all bake and cache steps locally before uploading
Required - 5
Upload all external textures, presets, and asset files
Required - 6
Test that the add-on works without internet on a worker
Recommended - 7
Run a 1-frame test render on the farm before full submission
Recommended
Things To Watch Out For
- Network-related code was detected. Any online lookups, licensing checks, or downloads should be tested before relying on farm execution.
- Subprocess or external executable calls were detected. External binaries may not exist on remote workers by default.
- Local path or asset-library signals were detected. Paths that work on the artist machine can still fail on remote workers.
- Bake or cache signals were detected. Generated outputs may need to be prepared before upload.
Common Mistakes
- Forgetting to upload local assets or helper files, leading to incorrect renders.
- Not running bake or cache steps locally before farm submission, causing render discrepancies.
Recommended Workflow
- Bake caches or precompute outputs before sending a long render job.
- Open the scene in desktop Blender and run any interactive setup steps.
- Save the file and validate a small background render before scaling up.
- Test that the add-on works without internet on a worker to avoid network issues.
Worker Node Setup
For render farm administrators: what each render node needs to run this add-on.
Install the same version of Ucupaint on all render workers. Ensure all external tools and assets are available on the workers.
More Context
Please read the wiki to see the documentation and demo. It's not 100% complete yet, but it still can help you get started. To contribute to the wiki, you can go to the wiki repo.
Ucupaint is compatible with older Blender versions, starting from Blender 2.76. But for Blender versions earlier than 4.2, it's better to use the GitHub version to also get access to the auto-update feature.
If you find the addon useful, you can support the addon development here
Extension Score
58How well this add-on fits a render farm workflow.
No data available
Quick Facts
- Version
- 2.4.5
- Compatibility
- Blender 4.2.0 and newer
- Downloads
- 205019
- Published
- Monday 25th, March 2024 - 15:48
- Licenses
- SPDX:GPL-3.0-or-later
Declared Permissions
- files: Access to filesystem for loading and saving images
- network: Access to the network to update contributors and sponsors list