[Faith] Ekstrand sums up the current feature state for NVK as:

I won't claim parity with RADV but we've got a pretty solid set at this point. My GSoC student (@mohamexiety) is most of the way through YCbCr and, once that's done, we'll be able to claim Vulkan 1.2 with reasonable confidence. We've also got a decent set of features on top of that. Not everything required for DXVK, VKD3D, and Zink, but we've got most of it. What remains is either annoying (lines) or is compiler heavy enough that I'd rather just get the new back-end compiler up and going than try to fix all the codegen bugs.