As far as I know, both Vulkan (with extensions, for nvidia VK_NV_raytacing) and DirectX (with DXR) have ray-tracing capabilities in their standard. Their should

As far as I know, both Vulkan (with extensions, for nvidia VK_NV_raytacing) and DirectX (with DXR) have ray-tracing capabilities in their standard. Their shouldn't be any patent that deny AMD from providing an implementation in their drivers.