Dave Airlie Linux Graphics blog

Blog posts are like buses sometimes... I've spent time over the last month enabling Blackwell support on NVK, the Mesa vulkan driver for NVIDIA GPUs. Faith from Collabora, the NVK maintainer has cleaned up and merged all the major pieces of this work and landed them into mesa this week. Mesa 25.2 should ship with a functioning NVK on blackwell. The code currently in mesa main passes all tests in the Vulkan CTS. Quick summary of the major fun points: Ben @ NVIDIA had done the initial kernel bringup in to r570 firmware in the nouveau driver. I worked with Ben on solidifying that work and ironing out a bunch of memory leaks and regressions that snuck in. Once the kernel was stable, there were a number of differences between Ada and Blackwell that needed to be resolved. Thanks to Faith, Mel and Mohamed for their help, and NVIDIA for providing headers and other info. I did most of the work on a GB203 laptop and a desktop 5080. 1. Instruction encoding: a bunch of instructions changed how...

 I should have mentioned this here a week ago. The Vulkan AV1 encode extension has been out for a while, and I'd done the initial work on enabling it with radv on AMD GPUs. I then left it in a branch, which Benjamin from AMD picked up and fixed a bunch of bugs, and then we both got distracted. I realised when doing VP9 that it hasn't landed, so did a bit of cleanup. Then David from AMD picked it up and carried it over the last mile and it got merged last week. So radv on supported hw now supports all vulkan decode/encode formats currently available.