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OSPRay v3.0.0
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@johguenther johguenther released this 18 Oct 15:39
· 122 commits to master since this release
v3.0.0
66fa810
  • Beta support for Intel Xe GPUs (Intel Arc™ GPUs a Intel Data Center GPU Flex and Max Series), exploiting ray tracing hardware support. Implementation is based on the SYCL cross-platform programming language implemented by Intel oneAPI Data Parallel C++ (DPC++).
    Note that the following features are not implemented yet or are not working correctly on the new gpu device:
    • Multiple volumes in the scene
    • Clipping
    • Motion blur
    • Subdivision surfaces
    • Progress reporting via ospGetProgress or canceling the frame via ospCancel
    • Picking via ospPick
    • Adaptive accumulation via OSP_FB_VARIANCE and varianceThreshold
    • Framebuffer channels OSP_FB_ID_* (id buffers)
    • Experimental support for shared device-only data, works only for structuredRegular volume
    • Further known issues
      • Some delay on start-up or when changing the scene, because kernel code is JIT compiled and specialized. JIT compilation can be cached by setting environment variable SYCL_CACHE_PERSISTENT=1, then consecutive starts or rendering the same scene configuration is without delay
      • For some combination of compiler, GPU driver and scene the rendered images might show artifacts (e.g., vertical lines or small blocks)
      • Multidevice does not support OSPImageOperations for denoising or tone mapping
  • Add implicit indexing for mesh geometry
  • Add support for transferring ownership of temporary buffers: ospNewSharedData accepts an optional deleter callback
  • Optimizations for MPI module, supported by new integrated performance tracing framework
  • Optimize scivis gradient shading
  • Main thread does not set FTZ/DAZ anymore for denormals handling
  • Compute intersection epsilon for Mesh to avoid rendering artifacts due to self-intersection
  • Fix energy conservation of Pricipled material under certain parameter combinations
  • Fix denoiser to not wipe the alpha channel
  • Fix crash in HDRI light
  • Fix link order for Debug build on Windows
  • The new minimum versions of dependencies:
    • Embree v4.3.0
    • Open VKL v2.0.0
    • Open Image Denoise v2.1.0
    • ISPC v1.21.1
    • rkcommon v1.12.0
  • Breaking API changes
    • Renamed OSP_TEXTURE_FILTER_BILINEAR to OSP_TEXTURE_FILTER_LINEAR and OSP_VOLUME_FILTER_TRI[LINEAR|CUBIC] to OSP_VOLUME_FILTER_[LINEAR|CUBIC]
    • Most enums now use storage type uint32
    • gridSpacing of spherical regular volume defaults to full sphere
    • Remove deprecated parameters and API calls
      • error callback signatures without user pointer
      • first argument of ospNewMaterial
      • module name ispc; use cpu
      • volume texture and isosurface geometry: volumetricModel; use OSPVolume volume
      • Transfer function vec2f valueRange; use box1f value
      • hdri and sun-sky lights: intensityQuantity OSP_INTENSITY_QUANTITY_RADIANCE
      • spot light with intensityDistribution: intensityQuantity other than OSP_INTENSITY_QUANTITY_SCALE
Assets 9
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