Work-In-Progress RadeonSI+Nine Showing Big Performance Win For Source Engine Games

While Valve has been working on Vulkan-based rendering for Source Engine games by making use of DXVK for translating the game engine's native Direct3D calls to the Vulkan API, with some yet-to-be-merged Mesa patches around Gallium Nine there is much better performance to see with Gallium Nine at least for the RadeonSI driver...