al_create_sub_bitmap man page on DragonFly

al_create_sub_bitmap man page on DragonFly

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al_create_sub_bitmap(3)				       al_create_sub_bitmap(3)

NAME
       al_create_sub_bitmap - Allegro 5 API

SYNOPSIS
	      #include <allegro5/allegro.h>

	      ALLEGRO_BITMAP *al_create_sub_bitmap(ALLEGRO_BITMAP *parent,
		 int x, int y, int w, int h)

DESCRIPTION
       Creates a sub-bitmap of the parent, at the specified coordinates and of
       the specified size.  A sub-bitmap is a bitmap that shares drawing  mem‐
       ory  with a pre-existing (parent) bitmap, but possibly with a different
       size and clipping settings.

       The sub-bitmap may originate off or extend past the parent bitmap.

       See the discussion in al_get_backbuffer(3) about using  sub-bitmaps  of
       the backbuffer.

       The parent bitmap's clipping rectangles are ignored.

       If a sub-bitmap was not or cannot be created then NULL is returned.

       Note  that  destroying  parents	of  sub-bitmaps	 will  not destroy the
       sub-bitmaps; instead the	 sub-bitmaps  become  invalid  and  should  no
       longer be used.

SEE ALSO
       al_create_bitmap(3)

Allegro reference manual			       al_create_sub_bitmap(3)

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