OpenVDB is a C++ library that provides a hierarchical data structure and tools for efficient storage and manipulation of sparse volumetric data on three-dimensional grids.
The library solves the problem of handling large volumetric datasets in visual effects and simulation work by using a novel hierarchical structure designed to minimize memory overhead while maintaining fast access to sparse voxel data. This approach allows applications to work with volumetric information at scales that would be impractical with dense grid representations. The tool includes a comprehensive suite of operations for querying, modifying, and analyzing volumetric data.
OpenVDB suits projects in feature film production, visual effects, and any domain requiring efficient sparse volume representation and manipulation. The library is particularly valuable for studios and developers working with smoke, fire, liquid simulations, and other volumetric phenomena where memory efficiency and computational speed are critical. The project maintains integrations with Houdini and provides NanoVDB, a GPU-friendly variant for real-time applications.
The project maintains active continuous integration across its core library, AX language extension, NanoVDB, and Houdini integration. Development occurs on the trunk branch, which contains the latest features and bug fixes but has undergone less testing than production releases. The project welcomes external contributions and maintains a discussion forum for community engagement.
