'''_glDepthMask:''' enable or disable writing into the depth buffer


{{PageSyntax}}

  SUB _glDepthMask (BYVAL flag AS _UNSIGNED _BYTE)
  void '''_glDepthMask'''(GLboolean {{Parameter|flag}});


; flag
: Specifies whether the depth buffer is enabled for writing. If {{Parameter|flag}} is {{KW|_GL_FALSE}}, depth buffer writing is disabled. Otherwise, it is enabled. Initially, depth buffer writing is enabled.


{{PageDescription}}

'''_glDepthMask''' specifies whether the depth buffer is enabled for writing. If {{Parameter|flag}} is {{KW|_GL_FALSE}}, depth buffer writing is disabled. Otherwise, it is enabled. Initially, depth buffer writing is enabled.


{{PageUseWith}}

{{KW|_glGet}} with argument {{KW|_GL_DEPTH_WRITEMASK}}


{{PageNotes}}

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 {{KW|_GL_ALWAYS}} (see {{KW|_glDepthFunc}}).


{{PageSeeAlso}}

{{KW|_GL}}
{{KW|_glColorMask}}, {{KW|_glClearBuffer}}, {{KW|_glDepthFunc}}, {{KW|_glDepthRange}}, {{KW|_glStencilMask}}


{{PageCopyright}}

Copyright 1991-2006 Silicon Graphics, Inc. Copyright 2012 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see [http://oss.sgi.com/projects/FreeB/ http://oss.sgi.com/projects/FreeB/].