Embree

- New future proof API with a strong focus on supporting dynamic
scenes
- Lots of optimizations for 8-wide AVX2 (Haswell architecture)
- Automatic runtime code selection for SSE, AVX, and AVX2
- Support for user-defined geometry
- New and improved BVH builders:
- Fast adaptive Morton code-based builder (without SAH-based
top-level rebuild)
- Both the SAH and Morton code-based builders got faster (Xeon
Phi)
- New variant of the SAH-based builder using triangle pre-splits
(Xeon Phi)

- Support for the Intel® Xeon Phi™ coprocessor platform
- Support for high-performance "packet" kernels on SSE, AVX, and Xeon
Phi
- Integration with the Intel® Implicit SPMD Program Compiler (Intel® ISPC)
- Instantiation and fast BVH reconstruction
- Example photo-realistic rendering engine for both C++ and Intel® ISPC