Intel® OSPRay is an open source, scalable, and portable ray tracing
engine for high-performance, high-fidelity visualization on Intel
Architecture CPUs, Intel Xe GPUs, and ARM64 CPUs. OSPRay is part of the
Intel oneAPI Rendering Toolkit and is released under the permissive
Apache 2.0 license.

The purpose of OSPRay is to provide an open, powerful, and easy-to-use
rendering library that allows one to easily build applications that use
ray tracing based rendering for interactive applications (including
both surface- and volume-based visualizations). OSPRay runs on anything
from laptops, to workstations, to compute nodes in HPC systems.

OSPRay internally builds on top of Intel Embree, Intel Open VKL, and
Intel Open Image Denoise. The CPU implementation is based on Intel ISPC
(Implicit SPMD Program Compiler) and fully exploits modern instruction
sets like Intel SSE4, AVX, AVX2, AVX-512 and NEON to achieve high
rendering performance. Hence, a CPU with support for at least SSE4.1 is
required to run OSPRay on x86_64 architectures, or a CPU with support
for NEON is required to run OSPRay on ARM64 architectures.

OSPRay’s GPU implementation (beta status) is based on the SYCL
cross-platform programming language implemented by Intel oneAPI Data
Parallel C++ (DPC++) and currently supports Intel Arc™ GPUs on Linux
and Windows, and Intel Data Center GPU Flex and Max Series on Linux,
exploiting ray tracing hardware support.