ArmorPaint just released version 0.7 containing several new features including additional texture file formats, plugin support and even live preview support for Unity and Unreal game engines. ArmorPaint is built on top of the Armory3D game engine (tutorial available here) and is an open source alternative to Substance Painter.
Details from the release notes:
- Added support for .psd, .bmp, .gif formats
- Added single material export
- Added blend modes for layers
- Added blend modes for brush
- Added plugin manager
- Added ‘auto-save’ plugin
- Added ‘hello-node’ plugin – custom material node
- Added ‘console’ plugin – run commands
- Added ‘profiler’ plugin – performance graph
- Added ‘converter’ plugin – convert .arm files into .json
- Added ‘import_tiff’ plugin – support for .tiff format
- Added ‘import_stl’ plugin – support for .stl format
- Added ‘import_gltf’ plugin – support for .gltf/.glb format (alpha)
- Added ‘uv_unwrap’ plugin – auto-generate uvs / unwrap active mesh
- Added ‘theme-editor’ plugin
- Added box selection to node editor
- Added per-fill-layer uv control
- Added option to split .obj mesh by groups or materials
- Added ‘decal tool – scale x’ option for non-square decals
- Added ‘menu – file – reimport mesh’
- Added ‘menu – viewport – split view’
- Added ‘preferences – restore’ button
- Added ‘preferences – native file browser’ option
- Added ‘preferences – viewport – vignette’ option
- Added ‘preferences – usage – dilate radius’ option
- Added texture export presets
- Added ‘layer’ material node – drop layer onto node canvas
- Added ‘layer mask’ material node – drop layer mask onto node canvas
- Added ‘blur (image)’ material node
- Added experimental dxr build
- Added path-trace (dxr) viewport mode
- Added ao (dxr) bake
- Added bent normal (dxr) bake
- Added lightmap (dxr) bake
- Added thickness (dxr) bake
- Added normal-map bake from high-poly
- Added height bake from high-poly
- Added dilation pass to baking
- Added ‘up axis’ option for relevant bake types
- Added support for drag and dropping multiple files at once
- Added popup for editing RGBA node sockets
- Improved gizmo
- Improved height paint
- Improved .obj importer
- Improved .blend importer
- Improved outliner
- Improved node drawing performance
- Improved layer handling performance
- Improved key detection on linux
- Fixed handling of accented filepaths
- Fixed brush mask on linux
- Fixed copy-paste on linux
- Fixed window title updating on linux
- Fixed file association
- Fixed envmap import
- Fixed object mask for fill layers
- Fixed height displacement scale
- Fixed blurry text on windows
- Fixed texture filtering option for image node
- Fixed key repeat for text edit
- Updated dark and light themes
- Updated menu bar structure
- Reduced gpu memory usage
- Faster texture loading
- Undo for layer opacity and blending
- Undo for node canvas
- Adjustable viewport clip distance
- Remember window size and position
- Open node search on link drag
- Resizable ui panels
- Duplicate material
- Use brush ruler (shift) to draw lines
- Auto-set 2x scale on high-res displays
- Flat shading for viewport modes inspecting pbr channels
- Picker tool works on non-base layer
- Picker tool shows texture coordinate in 2d view
- Export single texture from textures tab
- Eraser takes hardness and opacity into account
- Export textures as udim tiles for udim projects
- Download ‘texture-synthesis’ plugin preview
- Download Unreal Engine live-link preview
- Download Unity Engine live-link preview
If you want to build ArmorPaint from source you can learn more about the process here. You can see ArmorPaint in action in the video below.