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.TH "al_clear_depth_buffer" "3alleg5" "" "Allegro reference manual" ""
.hy
.SH NAME
.PP
al_clear_depth_buffer - Allegro 5 API
.SH SYNOPSIS
.IP
.nf
\f[C]
#include <allegro5/allegro.h>

void al_clear_depth_buffer(float z)
\f[R]
.fi
.SH DESCRIPTION
.PP
Clear the depth buffer (confined by the clipping rectangle) to the given
value.
A depth buffer is only available if it was requested with
al_set_new_display_option(3alleg5) and the requirement could be met by
the al_create_display(3alleg5) call creating the current display.
Operations involving the depth buffer are also affected by
al_set_render_state(3alleg5).
.PP
For example, if \f[C]ALLEGRO_DEPTH_FUNCTION\f[R] is set to
\f[C]ALLEGRO_RENDER_LESS\f[R] then depth buffer value of 1 represents
infinite distance, and thus is a good value to use when clearing the
depth buffer.
.SH SINCE
.PP
5.1.2
.SH SEE ALSO
.PP
al_clear_to_color(3alleg5), al_set_clipping_rectangle(3alleg5),
al_set_render_state(3alleg5), al_set_new_display_option(3alleg5)