AMDVLK 2023.Q2.2 Brings New Extension For VKD3D-Proton, Performance Tuning

Written by Michael Larabel in Radeon on 22 May 2023 at 08:25 AM EDT. 3 Comments
It's been over one month since the release of AMDVLK 2023.Q2.1 while today it's been succeeded by the AMDVLK 2023.Q2.2 update.

With today's AMDVLK open-source Vulkan driver update there is support for VK_EXT_mutable_descriptor_type, the Vulkan extension worked on by Valve as part of Direct3D over Vulkan handling. VK_EXT_mutable_descriptor_type usage allows reducing the descriptor memory footprint and can yield much more efficient emulation of the raw Direct3D 12 (D3D12) binding model. VK_EXT_mutable_descriptor_type driver support is a win for VKD3D-Proton usage for D3D12 games on Linux with Steam Play.

AMD Radeon GPUs

Mesa's RADV driver has supported VK_EXT_mutable_descriptor_type since Mesa 22.3 last year while now at least there is AMDVLK support too.

Today's update also has performance tuning for multi-sample anti-aliasing (MSAA) image copy for games like Rage 2 on Steam Play.

The other notable addition with today's AMDVLK release is adding Mid-Command Buffer Preemption (MCBP) support for RDNA2 GPUs.
- Update Khronos Vulkan Headers to 1.3.250
- Update supported CTS to
- Expose extension VK_EXT_mutable_descriptor_type
- Expose supported SPIR-V Capabilities/Extensions in amdllpc
- Performance tuning for MSAA image copy for games such as Rage2, etc.
- Add MCBP support for Navi3x

Plus there is a handful of bug fixes - including a corruption fix for Zink on AMDVLK. Source code downloads along with RHEL/CentOS and Ubuntu binaries of AMDVLK 2023.Q2.2 are available from GitHub.
Related News
About The Author
Michael Larabel

Michael Larabel is the principal author of 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 automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

Popular News This Week