Radeon Vulkan Driver Added To Mesa, Fresh Radeon Vulkan vs. OpenGL Benchmarks + AMDGPU-PRO

Today the RADV Radeon Vulkan driver is landing in mainline Mesa and just hit the Git code minutes ago. Merging the RADV driver came up just over the past few weeks in time for next month's Mesa stable release while this community-based driver was developed over the summer by David Airlie and Bas Nieuwenhuizen. This "unofficial" Radeon Vulkan open-source driver is now becoming part of the Mesa code-base with it being able to support the few Vulkan Linux games but isn't yet a fully conformant driver. Here are fresh benchmarks of the RADV driver compared to the RadeonSI OpenGL driver and benchmarks compared to AMD's hybrid closed-source AMDGPU-PRO driver on several different graphics cards.