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By Zayden R., July 31, 2026
A new patch for the Nouveau driver in Linux 7.3 enables NVK Vulkan Video atop NVIDIA NVDEC, initially supporting H.264 decoding. Engineers interested in open-source GPU drivers should take note.
The latest drm-misc-next patches for the upcoming Linux 7.3 kernel introduce a notable enhancement for the open-source NVIDIA 'Nouveau' driver. Crafted by Red Hat's David Airlie, this patch facilitates the allocation of NVDEC channels via the ABI16 interface. Why does this matter? It paves the way for the Mesa NVK driver to leverage Vulkan Video capabilities, initially targeting H.264 video decoding.
This development is particularly relevant for those working with NVIDIA Turing GPUs and later models. The support hinges on NVIDIA's GPU System Processor (GSP) firmware, meaning older GPUs are left out. Engineers who rely on open-source drivers for video processing will find this a solid improvement, especially as the Linux 7.3 merge window approaches in August.
There's ongoing work to expand this capability to H.265, although current efforts are hitting snags with the NVIDIA GSP. Still, the inclusion of this patch in the drm-misc-next branch gives hope that at least H.264 support will be integrated soon. This is part of a broader pull request that includes other minor Direct Rendering Manager driver patches.
For engineers tracking open-source GPU performance, this patch could be a catalyst for further enhancements. With NVIDIA's proprietary drivers often viewed as a necessary evil, the promise of robust open-source alternatives like NVK is a welcome development.
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