• Driver (now device) API changes:
  • Renamed VKLDriver to VKLDevice and updated associated device setup APIs
  • Use of multiple concurrent devices is now supported; therefore vklNewVolume() and vklNewData() now require a device handle
  • Renamed the ispc_device module and ispc device to cpu_device and cpu, respectively
  • The OPENVKL_CPU_DEVICE_DEFAULT_WIDTH environment variable can now be used to change the cpu device's default SIMD width at run time
• Added new VKLTemporalFormat enum used for temporally varying volume parameterization
• VDB volumes:
  • Support for temporally structured and temporally unstructured (TUV) attribute data, which can be used for motion blurred rendering
  • Supporting tricubic filtering via VKL_FILTER_TRICUBIC filter type
  • Added support for half precision float-point (FP16) attribute data via VKL_HALF data type
  • Added a new InnerNode observer and associated utility functions which allows applications to introspect inner nodes of the internal tree structure, including bounding boxes and value ranges
  • Renamed VKL_FORMAT_CONSTANT_ZYX to VKL_FORMAT_DENSE_ZYX
• Structured regular and spherical volumes:
  • Added support for half precision float-point (FP16) attribute data via VKL_HALF data type
• Unstructured volumes:
  • Added support for elementary cell iteration via the elementaryCellIteration parameter
  • Robustness improvements for hit iteration
• AMR volumes:
  • Improved interval iterator implementation, resolving issues with returned interval nominalDeltaT values
  • Interval iterators now support maxIteratorDepth parameter
• Interval and hit iteration performance improvements when multiple values ranges / values are selected
• Added new temporal compression utilities which applications can use for processing temporally unstructured attribute data
• vklExamples additions demonstrating:
  • Motion blurred rendering on temporally structured and temporally unstructured vdb volumes
  • Tricubic filtering on vdb volumes
  • Half-precision floating-point (FP16) support for structuredRegular, structuredSpherical, and vdb volumes
  • Elementary cell interval iteration on unstructured volumes
  • Use of the InnerNode observer on vdb volumes
• Superbuild updates to:
  • Embree 3.13.0
  • rkcommon 1.6.1
• Minimum rkcommon version is now 1.6.1