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(3alleg), set_zbuffer(3alleg), destroy_zbuffer(3alleg),
exzbuf(3alleg)