Mesa "Vallium" - Software/CPU-Based Vulkan Based On LLVMpipe

While there has been the CPU-based "Kazan" Vulkan driver (formerly Vulkan-CPU as a Google Summer of Code project) and Google's SwiftShader has been implementing CPU-based Vulkan support, it turns out Red Hat's David Airlie has been working on a Mesa/Gallium3D-inspired Vulkan software renderer...