Intel® Open Volume Kernel Library (Intel® Open VKL) is a collection of high-performance volume computation kernels, developed at Intel. The target users of Open VKL are graphics application engineers who want to improve the performance of their volume rendering applications by leveraging Open VKL’s performance-optimized kernels, which include volume traversal and sampling functionality for a variety of volumetric data formats. The kernels are optimized for the latest Intel® processors with support for SSE, AVX, AVX2, and AVX-512 instructions, and for ARM processors with support for NEON instructions. Open VKL is part of the Intel® oneAPI Rendering Toolkit and is released under the permissive Apache 2.0 license.

Open VKL provides a C API, and also supports applications written with the Intel® Implicit SPMD Program Compiler (Intel® ISPC) by also providing an ISPC interface to the core volume algorithms. This makes it possible to write a renderer in ISPC that automatically vectorizes and leverages SSE, AVX, AVX2, AVX-512, and NEON instructions. ISPC also supports runtime code selection, thus ISPC will select the best code path for your application.

In addition to the volume kernels, Open VKL provides tutorials and example renderers to demonstrate how to best use the Open VKL API.

Version History

Open VKL 1.1.0

Open VKL 1.0.1

Open VKL 1.0.0

Open VKL 0.13.0

Open VKL 0.12.1

Open VKL 0.12.0

Open VKL 0.11.0

Open VKL 0.10.0 (alpha)

Open VKL 0.9.0 (alpha)

Open VKL 0.8.0 (alpha)

Open VKL 0.7.0 (alpha)

Support and Contact

Open VKL is under active development, and though we do our best to guarantee stable release versions a certain number of bugs, as-yet-missing features, inconsistencies, or any other issues are still possible. Should you find any such issues please report them immediately via Open VKL’s GitHub Issue Tracker (or, if you should happen to have a fix for it, you can also send us a pull request); you may also contact us via email at .

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