Ucupaint is a Blender addon to manage texture layers for the Eevee and Cycles renderers.

Compatibility
You need at least Blender 2.79 to use this addon, but more advanced features are only available on the modern version of Blender (2.80+).

Installation
Go to the releases page and download according to your Blender version. Open Blender, go to Edit > User Preferences, select the add-ons tab and press the install button, browse to your downloaded addon zip file and click install add-on.

Location
Blender 2.79: View 3D > Tool Shelf > Ucupaint
Blender 2.80 or greater: View 3D > Sidebar > Ucupaint

Documentation & Demo
Please read the wiki to see the documentation and demo. It’s not 100% complete, but it still can help you get started.
To contribute to wiki, you can go to the wiki repo.

Discord Server
You can join Ucupaint Discord to ask or discuss things related to Ucupaint

1.5.9 update:
Smooth bump is now disabled by default, but all images used for normal channel will be using ‘Cubic’ interpolation automatically so the bump will still be less blocky than standard ‘Linear’ interpolation. This will hugely affect the shader compilation and responsiveness of the addon.
Now ucupaint will switch viewport to material view by default when doing the quick setup.

THE LATEST V2.1.2 UPDATE INCLUDES:

What’s new
Uniform vector scaling (#196)
Preference option to enable/disable auto UDIM detection (#200)
Now there’s a warning popup when trying to delete/merge unsaved layer/mask images (#193)
No more single option confirmation popup to move a layer outside of a group (#195)
Bugfixes
Fix: Copying a layer doesn’t copy layer parameters (#194)
Fix: Trying to bake Fake Lighting throws an error when it’s used in certain layer stacks (#191)
Fix Ucupaint Multi-User Node breaks the node setup when Use Baked and Enable Baked Outside is active (#190)
Fix: Incorrect image paths if the blend file is saved after images were imported to Ucupaint (#192)
Fix: Missing UI after using image alpha as a mask (#188)
Fix: Missing icons can happen randomly
Fix: Driver can be wrongly assigned after changing layer parameters