IOW, how reality gets interpreted to consciousness?
The exact mechanics, I don't think anyone knows yet. However, we have physical examples of how information gets interpreted into a usable format. Take your computer system for example. It takes information that you wouldn't be able to make sense of if you were to view directly the information signals themselves and converts them into sound, colors, beautiful images, music, creates AI personalities etc...
All this occurs through a purely physical process which is 100% known and understood by a few. Even though a majority of folks don't understand how this works, they still experience the reality of it.
So there is no reason to think consciousness is not a physical process. Just that we have yet to learn the mechanics of it.