AMD Releases FSR SDK v2.2 with FSR 4.1 and Ray Regeneration 1.1

AMD has released its official FSR Software Development Kit version 2.2, which includes the latest set of FSR technologies. This release features FSR Upscaling 4.1 and Ray Regeneration 1.1, showcased late last week as part of the Adrenalin Edition 26.3.1 WHQL driver. The updated FSR “Redstone” SDK v2.2 introduces a much improved FSR 4.1 upscaling technology for the RDNA 4 family of graphics cards. The transition from FSR 4.0 to FSR 4.1 demonstrates that the latest version provides much finer details of game scenery, especially when objects are in motion. In the Crimson Desert game demo, grass moved by the wind appears much more detailed with FSR 4.1 compared to FSR 4.0, which previously applied a somewhat blurry effect to the grass. This improvement brings the visuals closer to native rendering.

Additionally, AMD has included Ray Regeneration 1.1 in the FSR SDK 2.2. AMD’s FSR Ray Regeneration processes the noisy output that ray tracing naturally produces and cleans it up in real time, resulting in noticeably sharper and more polished visuals without requiring developers to overhaul their existing pipelines. With the update to version 1.1, it delivers much better and deeper shadows, immersive lighting, and more. You can check out the images below for comparison. The latest SDK also includes AMD FSR Frame Generation 4.0.0 in its vanilla version, as well as AMD FSR Radiance Caching 0.9.0, which is now in technical preview.

Interestingly, AMD lists FSR 4.0, FSR 4.1, and Radiance Caching 0.9 as requiring a Radeon RX 9000 series GPU with RDNA 4 IP. For Ray Regeneration 1.1 and Radiance Caching, AMD requires DirectX 12 Shader Model 6.6, which is available in a separate DirectX 12 Agility SDK 1.4.9 or newer. In the known issues list, AMD notes that Vulkan is currently not supported in SDK 2.2. It is unclear if support will be added, as some “Redstone” technologies rely on DirectX 12-specific Shader Models.