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ALLEGRO_STATE(3)	    Library Functions Manual		ALLEGRO_STATE(3)

NAME
     ALLEGRO_STATE - Allegro 5 API

SYNOPSIS
	    typedef struct ALLEGRO_STATE ALLEGRO_STATE;

DESCRIPTION
     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 this:

	      global
		  active system driver
		      current config
	      per thread
		  new bitmap params
		  new display params
		  active file interface
		  errno
		  current blending mode
		  current display
		      deferred drawing
		  current target bitmap
		      current transformation
		      current projection transformation
		      current clipping rectangle
		      bitmap locking
		      current shader

     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 sepa-
     rate 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 primi-
     tives described in the threads section or events described  in  the  events
     section to control inter-thread communication.)

Allegro reference manual					ALLEGRO_STATE(3)

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