clear_zbuffer man page on DragonFly

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clear_zbuffer(3)		Allegro manual		      clear_zbuffer(3)

NAME
       clear_zbuffer  -	 Writes a depth value into the given Z-buffer. Allegro
       game programming library.

SYNOPSIS
       #include <allegro.h>

       void clear_zbuffer(ZBUFFER *zbuf, float z);

DESCRIPTION
       Writes z into the given Z-buffer (0  means  far	away).	This  function
       should  be used to initialize the Z-buffer before each frame. Actually,
       low-level routines compare depth of the current	pixel  with  1/z:  for
       example,	 if  you  want to clip polygons farther than 10, you must call
       clear_zbuffer(zbuf, 0.1).

SEE ALSO
       create_zbuffer(3), set_zbuffer(3), destroy_zbuffer(3), exzbuf(3)

Allegro				 version 4.4.2		      clear_zbuffer(3)
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