Rizom Lab has released RizomUV 2025, the latest version of its standalone UV unwrapping software. The main addition is GPU-based packing, available only on Windows with CUDA-capable NVIDIA GPUs.
The new algorithm produces UV layouts 2–4% more efficient in tile coverage compared to CPU packing. More importantly, Rizom Lab reports typical speed increases of three to four times. The gains apply to both single-tile and multi-tile (UDIM) workflows. GPU packing does not extend to macOS or Linux. Users on those systems remain limited to CPU packing.
Packing Gets Choices
The release introduces four selectable packing “strategies”. Each prioritises a different outcome: faster speed, maximum coverage, minimised artifacts, or a mode tailored to pixel-art pipelines. These strategies work on both CPU and GPU packing. Packing to tiles in UDIM workflows has also been improved. Objects grouped together can now be automatically distributed across tiles.
Scene Outliner and UI Tweaks
A new scene outliner displays a hierarchical view of objects, with controls for visibility and isolation. This should improve navigation in complex assets. “Align UV to 3D” has been reworked. The tool now interprets the original 3D orientation more accurately, ignoring irrelevant surface noise. Users can align islands along specific directions (+U, –U, +V, –V) with fallback axes. Workflow settings can be saved as defaults across sessions. These include UI preferences, UV set resolution, scene units and packing padding. The update also extends support for vertex, edge and polygon selections, including border selection.
Editions, Pricing and Platforms
RizomUV is available in two editions. The Virtual Spaces (VS) edition targets game and VFX workflows with normalised UV space. The Real Space (RS) edition is intended for product and industrial design with non-normalised UVs. Pricing for VS: perpetual licence €149.90, or rent-to-own at €14.90/month. The Pro version is rental only at €34.90/month. Pricing for RS: perpetual licence €299.90, or rent-to-own at €29.90/month. The Pro version is €59.90/month rental. Supported platforms are Windows 10+, macOS 11.0+, and RHEL 8.6+ Linux. GPU packing requires Windows and an NVIDIA GPU with CUDA support.
Caution Before Deployment
RizomUV 2025 promises real benefits for Windows users with NVIDIA GPUs, especially when handling dense models or many islands. On other platforms, the gains are more incremental. As with any new feature set, studios should test GPU packing performance and reliability on in-house hardware before deploying the update in production.
