---
name: "al_clear_depth_buffer"
section: "3alleg5"
platform: "linux"
package: "allegro5-doc"
version: "2:5.2.10.1+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/al_clear_depth_buffer/3alleg5"
---

# al\_clear\_depth\_buffer(3alleg5)

Allegro 5 API

## NAME

al\_clear\_depth\_buffer - Allegro 5 API

## SYNOPSIS

-

  ```
  #include <allegro5/allegro.h>
  void al_clear_depth_buffer(float z)
  ```

## DESCRIPTION

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).

For example, if `ALLEGRO_DEPTH_FUNCTION` is set to `ALLEGRO_RENDER_LESS` then depth buffer value of 1 represents infinite distance, and thus is a good value to use when clearing the depth buffer.

## SINCE

5\.1.2

## SEE ALSO

al\_clear\_to\_color(3alleg5), al\_set\_clipping\_rectangle(3alleg5), al\_set\_render\_state(3alleg5), al\_set\_new\_display\_option(3alleg5)