Do you think AMD hasn't provided any RT support to devs over the last 2 years? Somehow most of the console games have RT in some form and they have been developing them for quite a while I reckon.
I doubt AMD has provided any support when it comes to RT because AMD only uses the DX extensions to achieve it. Either the game engine supports Microsoft's DX Ray tracing which will likely carry on being the standard, or it supports NV's RT extensions which NV had to make because nothing existed to support RT in Vulkan.
Just because AMD only offers RT via Direct X doesn't mean Nvidia does not offer it. Nvidia has offered that from the start, they just had to make their own to also support Vulkan.
I don't understand why it's so hard for people to understand. As soon as somebody mentions that AMD are supporting an open standard fanboys try to shoot down Nvidia even though Nvidia have supported it all along. It boggles my mind
