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CHANGELOG.md

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Version History

Open VKL 0.9.0 (alpha)

  • 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

Open VKL 0.8.0 (alpha)

  • Added support for structured volumes on spherical grids ("structured_spherical" volume type)
  • Structured regular volumes:
    • Up to 8x performance improvement for scalar (single-wide) sampling
    • Fixed hit iterator bug which could lead to isosurfacing artifacts
    • Renamed voxelData parameter to data
  • Unstructured volumes:
    • Up to 4x performance improvement for scalar (single-wide) sampling
    • Improved interval iterator implementation for more efficient space skipping and tighter value bounds on returned intervals
    • Now using Embree for BVH builds for faster build times / volume commits
    • Renamed vertex.value and cell.value parameters to vertex.data and cell.data, respectively
  • AMR volumes:
    • renamed block.cellWidth parameter to cellWidth, and clarified API documentation
  • Added vklGetValueRange() API for querying volume value ranges
  • Added new driver parameters, APIs, and environment variables allowing user control of log levels, log / error output redirection, number of threads, and other options
  • vklIterateHit[4,8,16]() and vklIterateInterval[4,8,16]() calls now only populate hit / interval data for active lanes
  • Changed VKLDataType enum values for better forward compatibility
  • ISPC-side hit and interval iterator objects must now be declared varying
  • More flexible ISA build configuration through OPENVKL_MAX_ISA and OPENVKL_ISA_* CMake build options
  • Minimum ospcommon version is now 1.1.0

Open VKL 0.7.0 (alpha)

  • Initial public alpha release, with support for structured, unstructured, and AMR volumes.