"Please temper your expectations: even with hardware documentation, an optimized Vulkan driver stack (with enough features to layer OpenGL 4.6 with Zink) requires many years of full time work. At least for now, nobody is working on this driver full time3. Reverse-engineering slows the process considerably. We won’t be playing AAA games any time soon."
From https://rosenzweig.io/blog/asahi-gpu-part-6.html