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Improved multi-segment motion blur support for scenes with different number of time steps per mesh.
New top level BVH builder that improves build times and BVH quality of two-level BVHs.
Added support to enable only a single ISA. Previously code was always compiled for SSE2.
Improved single ray tracing performance for incoherent rays on AVX512 architectures by 5-10%.
Improved packet/hybrid ray tracing performance for incoherent rays on AVX512 architectures by 10-30%.
Improved stream ray tracing performance for coherent rays in structure-of-pointers layout by 40-70%.
BVH builder for compact scenes of triangles and quads needs essentially no temporary memory anymore. This doubles the maximal scene size that can be rendered in compact mode.
Triangles no longer store the geometry normal in fast/default mode which reduces memory consumption by up to 20%.
Compact mode uses BVH4 now consistently which reduces memory consumption by up to 10%.
Reduced memory consumption for small scenes (of 10k-100k primitives) and dynamic scenes.
Improved performance of user geometries and instances through BVH8 support.
The API supports now specifying the geometry ID of a geometry at construction time. This way matching the geometry ID used by Embree and the application is simplified.
Fixed a bug that would have caused a failure of the BVH builder for dynamic scenes when run on a machine with more then 1000 threads.
Fixed a bug that could have been triggered when reaching the maximal number of mappings under Linux (vm.max_map_count). This could have happened when creating a large number of small static scenes.
Added huge page support for Windows and MacOSX (experimental).
Added support for Visual Studio 2017.
Removed support for Visual Studio 2012.
Precompiled binaries now require a CPU supporting at least the SSE4.2 ISA.
We no longer provide precompiled binaries for 32 bit on Windows.
Under Windows one now has to use the platform toolset option in CMake to switch to Clang or the Intel® Compiler.
Fixed a bug for subdivision meshes when using the incoherent scene flag.
Fixed a bug in the line geometry intersection, that caused reporting an invalid line segment intersection with primID -1.
Buffer stride for vertex buffers of different time steps of triangle and quad meshes have to be identical now.
Fixed a bug in the curve geometry intersection code when passed a perfect cylinder.