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⇱ VKD3D-Proton 3.0 Released: Big Update To Direct3D 12 On Vulkan With FSR4 Support - Phoronix


👁 Phoronix

VKD3D-Proton 3.0 Released: Big Update To Direct3D 12 On Vulkan With FSR4 Support

Written by Michael Larabel in Valve on 17 November 2025 at 10:56 AM EST. 49 Comments
Hans-Kristian Arntzen of Valve just announced VKD3D-Proton 3.0 as a major update to this Direct3D 12 implementation atop the Vulkan API that is used by Valve's Steam Play (Proton).

VKD3D-Proton 3.0 is considered a major release bringing various big features worked on over the past year. VKD3D-Proton 3.0 features a rewrite of its DXBC shader back-end to replace their legacy VKD3D shader path, which also now shares the same DXBC front-end with DXVK.

VKD3D-Proton 3.0 also brings support for AMD FidelityFX Super Resolution 4 "FSR4" via the Vulkan cooperative matrix and shader float8 extensions. This FSR4 support will work well on AMD GPUs while may run into issues with some other Vulkan drivers.

👁 VKD3D Proton 3.0


VKD3D-Proton 3.0 also implements experimental support for D3D12 work graphs, experimentally exposing opacity micromaps, support for AMD_antiI-lag when exposed, support for the shader resource path on upstream Wine, and a variety of performance optimizations. Plus many bug fixes throughout.

Overall VKD3D-Proton 3.0 is a big step forward for Windows gaming on Linux with this more competitive Direct3D 12 on Vulkan implementation. Downloads and more details on the VKD3D-Proton 3.0 release 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.