AMD Releases FSR SDK 2.4 With Vulkan Support and New Features

Advanced Micro Devices has officially released its FSR "Redstone" SDK 2.4, introducing machine-learning-powered FSR Upscaling 4.1.2 to Radeon RX 6000 Series GPUs and select Ryzen APUs alongside comprehensive Vulkan support. The major update brings full feature parity between Vulkan and DirectX 12 for both upscaling and frame generation, giving developers new tools to enhance graphical performance across a broader range of hardware configurations.

The newly updated FSR 4.1.2 upscaler features a full INT8 machine-learning model designed specifically for RDNA 2-based Radeon RX 6000 desktop graphics cards, extending advanced reconstruction techniques beyond the newer RX 7000 and RX 9000 product families. Additionally, the same model is supported on Ryzen AI Max 300 and 400 Series processors that utilize RDNA 3.5 integrated graphics. For lower-powered integrated graphics and handheld systems, AMD has engineered a lightweight INT8 model that is less than half the size of the full implementation, targeting processors such as the Ryzen AI 9 300 and 400 series as well as specialized handheld chips.

On the Vulkan front, the SDK update delivers comprehensive support for FSR Upscaling 4.1.2, FSR Frame Generation 4.0.2, and their corresponding analytical fallback implementations. While the integration successfully matches DirectX 12 capabilities, AMD noted that existing Vulkan titles utilizing FSR 3.1 will not automatically transition to the machine-learning versions through standard driver updates. Software developers must first integrate SDK 2.4 into their titles, though eligible Vulkan games will subsequently support automatic upgrades through AMD display drivers.

The software package also introduces Driver-Assisted Frame Pacing via FSR Frame Generation (Swapchain) 4.0.0, which remains exclusive to Radeon RX 9000 Series GPUs and newer hardware. Instead of depending on conventional CPU-side busy waiting, the updated display driver handles final presentation timing to improve frame delivery consistency while simultaneously reducing CPU overhead. To utilize this feature, users must run compatible software with Adrenalin 26.10.1 or newer drivers, disable VSync, operate in exclusive fullscreen or borderless windowed modes, and stay within the monitor variable refresh rate window.

Further additions in the 2.4 release include FSR Ray Regeneration 1.2.1, which provides standalone ambient occlusion and specular occlusion denoising. However, ray regeneration features continue to require an RDNA 4 or newer GPU and remain limited to DirectX 12 environments. Precompiled binaries and limited source code for SDK 2.4 are currently available through AMD's GitHub repository under the MIT license.

In related graphics development news, retro gaming projects utilizing Vulkan backends have also received significant updates. The D7VK project released version 2.4 to maintain and improve compatibility for older Direct3D titles on Linux systems running Wine and Proton. Concurrently, developers introduced GXVK, an early-stage prototype forked from DXVK that targets 3Dfx Glide for Voodoo Graphics 3D accelerators, allowing select classic games like Diablo II to run on modern open-source software stacks.