Terrain
Consumer for vanilla baked models. Generally intended to give visual results matching a vanilla render, however there could be subtle (and desirable) lighting variations so is good to be able to render everything consistently.
Also, the API allows multi-part models that hold multiple vanilla models to render them without combining quad lists, but the vanilla logic only handles one model per block. To route all of them through vanilla logic would require additional hooks.
Works by copying the quad data to an "editor" quad held in the instance, where all transformations are applied before buffering. Transformations should be the same as they would be in a vanilla render - the editor is serving mainly as a way to access vertex data without magical numbers. It also allows a consistent interface for downstream tesselation routines.
Another difference from vanilla render is that all transformation happens before the vertex data is sent to the byte buffer. Generally POJO array access will be faster than manipulating the data via NIO.