What is the oldest hardware or minimum requirements conceptually able to support a fully hardware-accelerated Vulkan implementation? I am not referring to what implementations are currently available or likely to be written, but what could possibly be written.
Is there a specific set of features that must be provided by hardware in order for the manipulation primitives provided by Vulkan to be used?
Can Vulkan drivers be written for every video card that supports OpenGL?
For example, could one create a hardware Vulkan driver for the Number Nine Imagine 128, with 4M VRAM?
I apologize for how naive my question must be, and thanks in advance for any reply.