3d-io has released UV-Packer for Unreal Engine as a free, fast and exact tool for automatic packing of UV maps. UV-Packer optimally packs even massive geometries with a single click without the need to leave Unreal Engine or reimport assets.
Get info and download instructions it from the official homepage:
or directly from Unreal Engine Marketplace:
The main advantage of UV-Packer is the automatic workflow of rescaling UV clusters relative to the surface they cover on the mesh and arranges them to utilize as much space on the UV map as possible. This increases the texture quality for the mesh, fixes overlapping UV and results in optimized light maps.
For more information about UV-Packer and how to use it you can find the documentation here:
Accessible – One click UV packing directly from within the StaticMesh Editor.
Fast – High performance for massive geometries and large numbers of UV charts.
Customizable – Options for uniform scaling, padding and rotation steps.
Robust – No overlaps, tolerance for damaged meshes.
Reliable – Stress-tested on millions of assets and polished in heavy production environments.
Automatable – Includes blueprint for custom editor utilities.
Code Modules: UVPacker (Editor), UVPackerLib (External)
Number of Blueprints: 1
Number of C++ Classes: 12
Network Replicated: No
Supported Development Platforms: Win64
Supported Target Build Platforms: All