The Vulkan driver RADV has been switched to use the ACO shader compilation backend.
In the codebase used to produce the Mesa 20.2 release, the RADV Vulkan driver for AMD chips has switched to the default backend for shader compilation, "ACO", developed by Valve as an alternative to the LLVM shader compiler. This change will lead to improved game performance and reduced loading times. To revert to the old backend, the environment variable "RADV_DEBUG=llvm" is provided. […]
