no, Notcurses supports both Sixel and the Kitty protocol (indeed, i proposed https://github.com/kovidgoyal/kitty/issues/3809, which drastically cut down on the bandwidth necessary for certain operations), in addition to the Linux framebuffer console (where we use a direct mmap of the framebuffer). WezTerm recently added support for the Kitty protocol, and indeed Notcurses was used to validate that work: https://github.com/wez/wezterm/issues/986. i sat down to design the ultimate terminal graphics protocol, and it ended looking so much like Kitty's that i resolved to just advocate terminals pick up that one: https://nick-black.com/dankwiki/index.php?title=Spriteful_TE...