G.2 Font Backends and Selection under Haiku

Emacs supports several different font backends when built with Haiku windowing support, though the subset supported is subject to the list of dependencies present and enabled when Emacs was configured. You can specify which font backends to utilize by providing -xrm Emacs.fontBackend:backend on the command line used to invoke Emacs, where backend is one of the backends listed below, or on a per-frame basis by changing the font-backend frame parameter.

Two of these backends, ftcr and ftcrhb are identical to their counterparts on the X Window System. There is also a Haiku-specific backend named haiku, that uses the App Server to draw fonts, but presently cannot display color fonts or Emoji.