RADV Vulkan driver now supports NVIDIA’s VK_NV_cooperative_matrix2 extension, boosting FSR4 & VKD3D-Proton performance for Linux gaming. Learn how this update impacts AMD GPU optimization & high-end gaming.
A Major Step for Vulkan & Linux Gaming
The Mesa Radeon Vulkan driver (RADV) has quietly introduced partial support for NVIDIA’s VK_NV_cooperative_matrix2 extension, a crucial advancement for GPU compute performance—particularly for FidelityFX Super Resolution 4 (FSR4) and VKD3D-Proton.
While still experimental, this update signals AMD’s commitment to improving Linux gaming performance through enhanced Vulkan compatibility.
What Is VK_NV_cooperative_matrix2?
VK_NV_cooperative_matrix2 is an NVIDIA Vulkan extension that builds upon VK_KHR_cooperative_matrix, expanding GPU compute capabilities beyond GEMM (General Matrix Multiply) kernels.
Introduced in Vulkan 1.3.300, this extension enhances AI upscaling, ray tracing, and shader optimizations—critical for next-gen gaming and machine learning workloads.
Key Features of the Extension:
CooperativeMatrixConversionsNV – Optimized for matrix data transformations
Support for mixed-precision operations – Improving efficiency in AI-driven rendering
Enhanced compatibility with Direct3D 12 via VKD3D-Proton – A win for Windows-to-Linux gaming
RADV’s Implementation: Current Limitations & Use Cases
The Mesa 25.2 update includes limited support for VK_NV_cooperative_matrix2, but it remains disabled by default. Users must enable it manually via:
radv_cooperative_matrix2_nv = true Performance Insights from Developer Georg Lehmann
In the merge request, Lehmann clarified:
*"Only ACC → B conversion is fast (free on GFX12). Other operations, like ACC/B → A conversion, are slower. Unfortunately, ACC → A transpose isn’t supported, which would have been ideal for AMD hardware."*
Why This Matters for Gamers & Developers
FSR4 Optimization – Better AI upscaling performance in Linux games
VKD3D-Proton Improvements – Smoher DirectX 12 → Vulkan translation
Future-Proofing – Prepares AMD GPUs for advanced compute workloads
Conclusion: What’s Next for RADV & Vulkan?
This update is a stepping stone toward broader Vulkan compute optimizations, particularly for AMD GPUs in Linux gaming. While still in early stages, the focus on FSR4 and VKD3D-Proton suggests future performance gains for high-end gaming.
🔹 Want the best Vulkan performance? Enable radv_cooperative_matrix2_nv and test FSR4 today!
🔹 Follow for more GPU & Linux gaming updates!
FAQs (For SEO & Engagement)
Q: How do I enable VK_NV_cooperative_matrix2 in RADV?
A: Add radv_cooperative_matrix2_nv = true to your DriConf settings.
Q: Will this improve FSR4 performance?
A: Yes, but optimizations are still early-stage.
Q: Is this extension useful for non-gaming workloads?
A: Potentially—AI/ML tasks may benefit from improved matrix ops.

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