AMDVLK is the AMD official open-source Vulkan driver for Linux systems.
AMDVLK comes with something AMD calls “AMD switchable graphics layer” in the form of a implicit layer library and configuration file in /etc/vulkan/implicit_layer.d/amd_icd64.json.
Install the AMDVLK Vulkan Driver
Select the AMDVLK Vulkan Driver