A good number of things in Minecraft are really only built for rendering in a GUI, rather than in-world. Should find a way to render in this 2D way, but have it render properly in-world. Maybe transform the Pose Stack to be in-world, then we can render using that stack as if we were rendering to a 2D screen? Not sure.

Would allow for #74 , and allow for other immersives such as beacons (since those require potion effect icons).

Here's a gist that allows it to occur. Note for anyone browsing this issue that this uses Mojang's Mappings, so if you're avoiding those, I wouldn't click: https://gist.github.com/hammy3502/1ac8d6c8f801a6cb654a3f60b33ccff6