enable_triple_buffer (3) - Linux Man Pages
enable_triple_buffer: Enables triple buffering. Allegro game programming library.
enable_triple_buffer - Enables triple buffering. Allegro game programming library.
If the GFX_CAN_TRIPLE_BUFFER bit of the gfx_capabilities field is not
set, you can attempt to enable it by calling this function. In particular
if you are running in mode-X in a clean DOS environment, this routine
will enable the timer retrace simulator, which will activate the triple
Returns zero if triple buffering is enabled, -1 otherwise.