VKD3D-Proton 3.1 Launches With New Feature Support
The latest update adds support for DXR 1.2 and Shader Model 6.9 to improve gaming compatibility on Linux.
Updated on Oct. 28, 2026 in Semiconductors
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Developers released version 3.1 of the VKD3D-Proton software, bringing key updates to graphics API translation on Linux systems. This release introduces support for DXR 1.2, Shader Model 6.9, and the VK_EXT_descriptor_heap extension.
Why it matters
The update provides essential feature parity and performance optimizations, setting the stage for future architectural changes. By cleaning up existing issues, this release facilitates the upcoming default enablement of descriptor heap functionality.
Version 3.1 introduces support for Shader Model 6.9 and AgilitySDK 619, while also enabling view instancing by default. The update includes specialized hardware workarounds for AMD GCN and Qualcomm architectures.
The players
Valve
Valve is a video game developer and digital distribution company that maintains the Proton compatibility layer for gaming on Linux.
The details
Valve incorporates these changes directly into its Proton software, ensuring automatic updates for Linux gaming users. The release also improves performance for ClearUAV and RTAS build commands and adds support for aarch64 builds.
Timeline
Version 3.1 was released on October 28, 2026.
The Tech Race
This release follows the ongoing development cycle of the Proton compatibility layer, which works to bridge the gap between Windows-based graphics APIs and Linux hardware. These updates are part of an industry-wide effort to minimize performance penalties when running high-end PC games on non-Windows operating systems.
Linux users can expect improved graphical fidelity and performance in compatible titles as Valve integrates these features into future Proton updates. Enthusiasts who prefer to test cutting-edge capabilities can access experimental features through manual configuration.
The takeaway
This update streamlines technical feature implementation, improving the overall compatibility experience for Linux gamers. Users should watch for version 3.2, which is expected to introduce even more significant architectural changes.
Further reading
For more information on the evolving landscape of hardware-to-software translation, visit our Semiconductors section.
Live Poll
Do you prioritize new graphic feature compatibility over long-term stability in your PC gaming setup?
