Mesa 26.0.0, the latest update to the open-source Linux graphics driver stack, has officially been released, and the new release promises a number of improvements to stability and performance, especially for gamers on AMD Radeon GPUs via Vulkan ray tracing in the RADV driver. There has also been done to the open-source NVK driver for NVIDIA GPUs, Intel Iris and ANV drivers, and support for the Qualcomm Adreno Gen 8 graphics for Snapdragon X2 SoCs has been added. In a recent blog post ahead of the official driver release, Natalie Vock, a developer working on Mesa, explained the more technical aspects of the update and their implications.

The most notable mentions include changes to shader compilation and function calls that make RADV work more efficiently in ray tracing—a change especially notable on Unreal Engine games, according to the developer. The developer notes that in Ghostwire Tokyo, RT passes have been sped up by more than two times. While this won't translate directly to a 200% performance increase, and the effect won't be identical across all games, it means that the ray tracing experience on Linux is catching up to Windows. There are also improvements to Unreal Engine 5 performance, specifically relating to Lumen ray tracing, where a number of tweaks and workarounds effectively make the driver work more efficiently with the feature set.