Provided by: allegro4-doc_4.4.2-4_all 

NAME
add_clip_rect - Intersects a bitmap's clipping rectangle with the given area. Allegro game programming
library.
SYNOPSIS
#include <allegro.h>
void add_clip_rect(BITMAP *bitmap, int x1, int y1, int x2, int y2);
DESCRIPTION
Sets the clipping rectangle of the specified bitmap as the intersection of its current clipping rectangle
and the rectangle described by the four coordinates.
SEE ALSO
set_clip_rect(3alleg4), get_clip_rect(3alleg4), set_clip_state(3alleg4), get_clip_state(3alleg4)
Allegro version 4.4.2 add_clip_rect(3alleg4)