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 [7]GitHub .



[1] https://www.phoronix.com/image-viewer.php?id=2025&image=fsr_redstone_1_lrg

[2] https://www.phoronix.com/image-viewer.php?id=2025&image=fsr_redstone_2_lrg

[3] https://www.phoronix.com/image-viewer.php?id=2025&image=fsr_redstone_3_lrg

[4] https://www.phoronix.com/image-viewer.php?id=2025&image=fsr_redstone_4_lrg

[5] https://www.phoronix.com/image-viewer.php?id=2025&image=fsr_redstone_5_lrg

[6] https://www.phoronix.com/image-viewer.php?id=2025&image=fsr_redstone_6_lrg

[7] https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK/releases/tag/v2.1.0