I was talking about VK_NV_ray_tracing precisely, which is proprietary Vulkan extension. And I thought there was a similar situation with DXR(at first proprietary Nvidia extension and then common standard), but I was mistaken.
> I was talking about VK_NV_ray_tracing precisely, which is proprietary Vulkan extension
Khronos does not promote an extension to KHR until multiple vendors ship support for it.
VK_KHR_ray_tracing is a direct continuation of VK_NV_ray_tracing with very light code changes needed. (and nothing prevents a vendor from shipping support for the two)
