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).
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Recent Releases
12.0.028 Nov 2024 14:45
major feature:
OpenVDB is now licensed under the Apache 2.0 license, instead of the MPL 2.0 license.
This version introduces ABI changes relative to older major releases,
so to preserve ABI compatibility it might be necessary to define the
macro OPENVDB_ABI_VERSION_NUMBER=N, where, for example, N is 10 for
Houdini 20.0 and 11 for Houdini 20.5.
GCC 9 is no longer supported.
OpenVDB:
New features:
- Added fillet() method in tools::LevelSetFilter to round off concave edges
to create smoother transition between surfaces.
Improvements:
- Added openvdb::assertAbort to replace cassert and a
OPENVDB_ENABLE_ASSERTS cmake argument/compile define to toggle
assertions in OpenVDB code, independantly of NDE. Asserts are
no longer enabled by default in when NDEis absent (e.g.
Debuilds).
- Removed last traces of Boost when OPENVDB_USE_DELAYED_LOADING is OFF.
Reported by Brian McKinnon .
- RootNode code cleanup to eliminate redundant key conversion and
to create map values in-place.
- Add RootNode::deleteChildOrTile() to delete a child or tile of
the root node.
- ValueAccessors are now defined and created in the Tree class
instead of in the Grid class so that custom Tree implementations
may define and create their own ValueAccessors if desired.
- Added support for PDAL to vdb_tool Contributed by Tom Matterson .
- LeafManager and NodeManager now use Index64 for leaf counts internally.
- Added RootNode::probeChild() const.
- Added RootNode::probeChild() and RootNode::probeConstChild().
- Added RootNode::probe() and RootNode::probeConst() to query key presence,
child node, value and active state.
- Added InternalNode::probeChild() const.
- Added InternalNode::probeChild() and probeChildConst() with coord access
and optionally value and active state.
- Added InternalNode::probeChild() and probeChildConst() with index access
and optionally value and active state.
- Added InternalNode::isValueOff(), LeafNode::isValueOff(),
LeafNodeBool::isValueOff(), LeafNodeMask::isValueOff().
- Added LeafNodeMask
11.0.010 Feb 2024 16:28
major feature:
Version 11.0.0 - November 1, 2023
This version introduces ABI changes relative to older major releases,
so to preserve ABI compatibility it might be necessary to define the
macro OPENVDB_ABI_VERSION_NUMBER=N, where, for example, N is 9 for
Houdini 19.5 and 10 for Houdini 20.0.
OpenEXR 2 and Python 2 are no longer supported.
OpenVDB:
Improvements:
- Removed use of boost::any in favor of std::any.
Contributed by Brian McKinnon
Bug Fixes:
- Fix potential crash reading corrupt .vdb files with invalid
blosc or zip chunks.
Contributed by Matthias Ueberheide
NanoVDB:
Highlights:
- Several new tools to generate and modify NanoVDB grids on the GPU.
- New file format that supports streaming of raw grid buffers.
New Features:
- New memory efficient GridClass::IndexGrid that separates values from tree
- 4 new GridTypes (Index, OnIndex, IndexMask, OnIndexMask) used by IndexGrid
- Added createNanoGrid that replaces older conversion methods in GridBuilder.h,
IndexGridBuilder.h and OpenToNanoVDB.h
- Added cudaPointsToGrid that constructs a point device grid from a list of
points.
- Added cudaVoxelsToGrid that constructs a voxel device grid from a list of
voxels.
- Added cuda/CudaUtils.h with several cuda utility functions.
- Added GpuTimer for timing of kernels in a specific cuda stream.
- Added cudaIndexToGrid that converts IndexGrids into regular Grids.
- Added cudaSignedFloodFill that performs signed-flood filling on the GPU.
- Added cudaAddBlindData that adds blind data to an existing grid on the GPU.
- Added cudaGridChecksum that computes checksums of device grids.
- Added cudaGridHandle that handles grids on the GPU.
- Added cudaNodeManager that constructs a NodeManager on the GPU.
- Added build type Points and GridType::PointIndex for point grids.
- Added GridType::Vec3u16 and GridType::Vec3u8 for compres
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