Intel releases XeSS 1.2 SDK, the key binary still not open-source

Published: Aug 16th 2023, 08:21 GMT   Comments

XeSS 1.2 out now

Intel has a new XeSS version now available for game developers. 

Intel is not slowing down with the development of their temporal upscaling technology, known as XeSS. The newest version was just released with the latest SDK (Software Development Kit) with an updated libxess.dll file compiled on July 27th and carrying a version of

Intel XeSS 1.2 brings backward compatibility with XeSS 1.0 and 1.1, meaning that file DLL drop in file replacement may still work for some games, but it wasn’t confirmed at the time of writing. Furthermore, there is now support for dynamic resolution scaling and new fixes improving stability and performance, notes the official changelog.

This XeSS version has not yet been implemented into any game, however Ratchet and Clank: Rift Apart already features a version “”. Worth adding that XeSS 1.1 was an important upgrade for Intel, whose upscaling tech brought faster XMX and DP4a kernels and new upscaling models. This version of XeSS has become a feasible alternative to other competing upscaling techniques like FSR or DLSS. Worth reminding that XeSS is supported not only by Intel GPUs but also AMD and NVIDIA gaming processors.

The SDK has a demo for everyone to download and try as well as documentation and samples for developers to implement. Unfortunately, unlike FSR, XeSS remains a closed source. That’s despite Intel advertising their technology as ‘open and accessible’, and Intel’s VP announcing the technology will be open-source.

The main library, the key tech that drives XeSS technology, is still a closed Windows DLL library that cannot be modified by anyone. Until this “libxess.dll” file is shared as a code, there is no way to consider XeSS open-source technology.

Source: Intel via Phoronix

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