Making indie games or 3D printing models, once the model is built and you get to the texturing step, mainstream software requires yearly subscriptions, and students and indie developers end up shelling out money that really hurts.

ArmorPaint takes the open-source route, specifically designed for 3D PBR texture painting. Just drag the model in and paint directly on it, with real-time lighting effects visible right in the viewport.

It’s entirely built from scratch around the GPU, so even a mid-range integrated graphics card can smoothly handle 4K texturing, and on high-end GPUs, 16K doesn’t lag either.

Materials and brushes are all node-based, allowing for fully procedural materials and fill layers.

Baking, drawing effects, and viewport rendering all use ray tracing, and it even comes with real-time integration plugins for Blender, Unreal, and Unity.

GitHub: http://github.com/armory3d/armorpaint…

The new version adds locally-run AI nodes, where a piece of text or a photo can generate seamless textures, and photos can even be broken down into separate maps for color, height, normal, and roughness.

After downloading the model, no internet connection is needed, and VRAM is recommended to be 6GB or more.

It runs on Windows, Linux, macOS, iOS, and Android, with the desktop version being portable (no installation required), and the installer package is under 10MB.

armory3d/armorpaint

Source: https://github.com/armory3d/armorpaint

armorpaint

ArmorPaint is a software for 3D PBR texture painting - check out the manual.

Note 1: This repository is aimed at developers and may not be stable. Distributed binaries are paid to help with the project funding. All of the development is happening here in order to make it accessible to everyone. Thank you for support!

Note 2: If you are compiling git version of ArmorPaint, then you need to have a compiler (Visual Studio with clang tools - Windows, clang + dependencies - Linux, Xcode - macOS / iOS, Android Studio - Android) and git installed.

git clone https://github.com/armory3d/armorpaint
cd armorpaint/paint

Windows (x64)

..\base\make
# Open generated Visual Studio project at `build\ArmorPaint.sln`
# Build and run

Linux (x64)

../base/make --run

macOS (arm64)

../base/make
# Open generated Xcode project at `build/ArmorPaint.xcodeproj`
# Build and run

Android (arm64)

../base/make --target android
# Open generated Android Studio project at `build/ArmorPaint`
# Build for device

iOS (arm64)

../base/make --target ios
# Open generated Xcode project `build/ArmorPaint.xcodeproj`
# Build for device

WASM

../base/make --target wasm --compile --embed

Generating a locale file

./base/make --js base/tools/extract_locales.js <locale code>
# Generates a `paint/assets/locale/<locale code>.json` file

Embedding data files

# Requires compiler with c23 #embed support (clang 19 or newer)
../base/make --embed