DragonFly On-Line Manual Pages
ALLEGRO_STATE - Allegro 5 API
typedef struct ALLEGRO_STATE ALLEGRO_STATE;
Opaque type which is passed to al_store_state(3)/al_restore_state(3).
The various state kept internally by Allegro can be displayed like
active system driver
new bitmap params
new display params
active file interface
current blending mode
current target bitmap
current clipping rectangle
In general, the only real global state is the active system driver.
All other global state is per-thread, so if your application has
multiple separate threads they never will interfere with each other.
(Except if there are objects accessed by multiple threads of course.
Usually you want to minimize that though and for the remaining cases
use synchronization primitives described in the threads section or
events described in the events section to control inter-thread
Allegro reference manual ALLEGRO_STATE(3)