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+OpenVDB is an Academy Award-winning open-source C++ library comprising
+a novel hierarchical data structure and a suite of tools for the
+efficient storage and manipulation of sparse volumetric data
+discretized on three-dimensional grids. It was developed by DreamWorks
+Animation for use in volumetric applications typically encountered in
+feature film production and is now maintained by the Academy Software
+Foundation (ASWF).
+
+OpenVDB can be compiled with Houdini (not on SBo), if someone needs
+support for it, feel free to modify the slackbuild to set
+
+-DOPENVDB_BUILD_HOUDINI_PLUGIN=ON
+
+VDB is a format for storing "volumetric data", such as fog, clouds,
+and "point cloud" in scientific data.
+