ArmorPaint takes advantage of a render engine found in the Armory project. Armory is an open-source 3D game engine with full Blender integration, turning it into a complete game development tool.
ArmorPaint is designed from scratch to run completely on the GPU. This results in a smooth 4K painting experience even on a medium-power integrated hardware. On the other hand, up to 20K texture painting is seamless using a high-end graphics card.
Work fast with the convenience of nodes. ArmorPaint uses a subset of standard material nodes found in Cycles render engine. This enables you to paint with complex, fully procedural materials using the proven workflow. Apart from materials, brush nodes are used to easily create painting patterns, shapes and procedural brushes.
The software binaries are provided with a one time donation of about €16, but can be built from the GitHub source.