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⇱ AMD FSR SDK 2.1 Released With FSR Redstone - Windows-Only For Now - Phoronix

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AMD FSR SDK 2.1 Released With FSR Redstone - Windows-Only For Now

Written by Michael Larabel in Radeon on 10 December 2025 at 09:16 AM EST. 20 Comments
AMD FSR SDK 2.1 is now available that includes their "FSR Redstone" machine learning based upscaling tech for gaming

FSR SDK 2.1 ships with FSR Frame Generation 4.0, FSR Ray Regeneration 1.0, and FSR Radiance Caching in preview form. FSR Radiance Caching will officially debut in 2026.

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AMD did brief us in advance on FSR Redstone albeit is Windows-only at this point with nothing to offer Linux gamers immediately.

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We'll see if Valve manages FSR Redstone support via Steam Play (Proton / VKD3D-Proton) or the like but for now is just for the Microsoft Windows gaming experience.

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Those wanting to check out FSR SDK 2.1 can find it via GitHub.

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.