Embree is a collection of high-performance ray tracing kernels developed
at Intel. The target users of Embree are graphics application engineers
that want to improve the performance of their application by leveraging
the optimized ray tracing kernels of Embree.
These kernels are optimized for photo-realistic rendering on the latest
Intel processors with support for SSE, AVX, AVX2, AVX512, and the 16-wide
Intel Xeon Phi coprocessor vector instructions.
Embree supports applications written with the Intel SPMD Program Compiler
(ISPC, available as `devel/ispc' port) by also providing an ISPC interface
to the core ray tracing algorithms.
===> The following configuration options are available for embree3-3.13.5:
BACKFACE_CULLING=off: Enable back-face culling (BFC)
DOCS=on: Build and/or install documentation
EXAMPLES=on: Build and/or install examples
ISPC=on: ISPC applications support
TBB=on: Use Intel TBB (optimal performance)
===> Use 'make config' to modify these settings
graphics/embree3: try to fix the build against CMake 4.x
While here, add forgotten type annotation in the similar
commit made to `math/fastops' port earlier.
PR: 299180
Fixes: fa07c9073bc9
graphics/embree: update Intel Embree to version 4.2.0
Versions 4.x have default values for ZIP mode and ISPC support
flipped, change them back in our port to avoid breaking POLA.
Preserve version 3.13.5 as `graphics/embree3' port and reroute
consumers to it due to incompatible API of the modern Embree.
PR: 285134
