• Added support for VDB sparse structured volumes ("vdb" volume type)
• Added vdb_util library to simplify instantiation of VDB volumes, and support loading of .vdb files using OpenVDB
• Added VKLObserver and associated APIs, which may used by volume types to pass information back to the application
  • A LeafNodeAccess observer is provided for VDB volumes to support on-demand loading of leaf nodes
• Structured regular volumes:
  • Up to 6x performance improvement for scalar iterator initialization
  • Up to 2x performance improvement for scalar iterator iteration
• General improvements to the CMake Superbuild for building Open VKL and all associated dependencies
• Allowing instantiation of ISPC driver for any supported SIMD width (in addition to the default automatically selected width)
• Volume type names are now camelCase (legacy snake_case type names are deprecated), impacting structuredRegular and structuredSpherical volumes
• Enabling flushDenormals driver mode by default
• Aligning public vkl_vvec3f[4,8,16] and vkl_vrange1f[4,8,16] types
• Added VKL_LOG_NONE log level
• Fixed bug in vklExamples which could lead to improper rendering on macOS Catalina
• Fixed bug in unstructured volume interval iterator which could lead to errors with some combinations of lane masks
• Now providing binary releases for Linux, macOS, and Windows