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(Image credit: Valve) The Vulkan -to- DirectX 12 translation tool used in Valve 's Proton has reached version 3.0, marking one of the tool's largest updates yet. The VKD3D-Proton project's GitHub page highlights a plethora of upgrades for version 3.0, including FSR 4 support, Anti-lag support, and a rewrite to the DXBC shader backend. Linux users can expect future iterations of Proton to come with VKD3D-Proton version 3.0 shortly.
FSR4 integration is one of the big highlights for this update. Specifically, the devs have implemented AGS WMMA intrinsics via VK_KHR_cooperative_matrix and VK_KHR_shader_float8, enabling FSR 4 compatibility. Not only is FSR 4 supported on RDNA 4 GPUs and newer, but there is also a fallback mode that uses int8 and float16 to make it work on older GPUs (similar to previous FSR 4 mods we've already seen). The only caveats with this alternate version are that it reportedly runs substantially slower than the native implementation designed for RDNA 4 (and newer) GPUs. It also won't be coming to "official" versions of Proton; the only way to run it is to build the emulation path from the source code with the official flags.
Regardless, Linux gamers now get FSR 4 support when running DirectX 12-based Windows games through Proton. FSR beats DLSS in this area, as DLSS 4 is not natively supported by Proton yet.
Latest FSR 4 source code 'leak' lets you run AMD's AI upscaling tech on nearly any GPU
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You can upgrade FSR 3.1 games to FSR 4 with manual DLL swapping
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Reference reading
- https://www.tomshardware.com/video-games/pc-gaming/SPONSORED_LINK_URL
- https://www.tomshardware.com/video-games/pc-gaming/vulkan-to-directx-12-translation-tool-used-in-valves-proton-now-supports-amds-fsr4-and-anti-lag-while-nvidias-dlss4-remains-unsupported-fsr4-now-also-works-on-older-gpus-vkd3d-proton-v3-0-brings-other-performance-improvements#main
- https://www.tomshardware.com
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