It's definitely not on layers. There's a weird perspective illusion vertically but it's not parallax and you can't "see around corners" vertically. It's a lenticular effect, horizontal only. Check out the Vimeo holographic channel: https://vimeo.com/channels/thelookingglass Each video is a 5x9 matrix and each view is a different angle. If you're working with a 3D object and not a video it's the same deal - it has to be rendered from 45 different perspectives and these are sent to the device separately.
It's 5x9, but that's just how it's stored, right? The actual data comes from a linear array of 45 cameras, right? Or is it a curved array of 45 cameras along an arc?
Right, I think a linear array would work best since it matches where your eyes will be when you move left & right in front of the screen. https://lookingglassfactory.com/how-it-works/ It shows up on HDMI as 2560x1600 but I don't know how the physical panel is laid out.