But I think I could access the filebuffer directly to write a BMAP to the gwen buffer
That would be awesome! Because I would be interested into A) using BMAP* as bitmap-sources for images and B) abusing that to render a VIEW* into a GWEN image via the BMAP*.
Just imagine for example a small window with parameters for a procedural shader applied via bmap_process to an image or a 3D-file preview of a selected player character or something