Radeon Rays 4.0 release is now available and comes with added Vulkan API, HIP and DirectX 12 support but drops OpenCL. It also maintains support for CPU-based execution too.
This accelerated ray intersection library for DirectX 12, Vulkan, HIP, and The CPU (central processing unit), also called a central processor, main processor, or more commonly processor, is the brains of the computer where most calculations take place. These calculations involve carrying out the instructions of a computer program by performing the basic arithmetic, logic, controlling, and input/output (I/O) operations specified by those instructions. Simple CPU setups can consist of microprocessors... More comes with new features and various other improvements. AMD originally made this release closed-source but reversed that decision and it is once again open source like its predecessors. Even though it is just some parts of it.
The announcement was made as part of the GPUOpen relaunch.