glDepthMask

3G

glDepthMask

enable or disable writing into the depth buffer

# C Specification

                    void glDepthMask
                    GLboolean flag

## Parameters

`flag`

- Specifies whether the depth buffer is enabled for writing. If `flag` is `GL_FALSE`, depth buffer writing is disabled. Otherwise, it is enabled. Initially, depth buffer writing is enabled.

## Description

`glDepthMask` specifies whether the depth buffer is enabled for writing. If `flag` is `GL_FALSE`, depth buffer writing is disabled. Otherwise, it is enabled. Initially, depth buffer writing is enabled.

## Associated Gets

glGet

with argument `GL_DEPTH_WRITEMASK`

## Notes

Even if the depth buffer exists and the depth mask is non-zero, the depth buffer is not updated if the depth test is disabled. In order to unconditionally write to the depth buffer, the depth test should be enabled and set to `GL_ALWAYS` (see

glDepthFunc

).

## See Also

glColorMask

,

glDepthFunc

,

glDepthRange

,

glStencilMask

## Copyright

Copyright 1991-2006 Silicon Graphics, Inc. Copyright 2010-2013 Khronos Group. This document is licensed under the SGI This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.