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glDepthMask.xml
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glDepthMask.xml
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<!DOCTYPE refentry [ <!ENTITY % mathent SYSTEM "math.ent"> %mathent; ]>
<!-- Converted by db4-upgrade version 1.1 -->
<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glDepthMask">
<info>
<copyright>
<year>1991-2006</year>
<holder>Silicon Graphics, Inc.</holder>
</copyright>
<copyright>
<year>2010-2013</year>
<holder>Khronos Group</holder>
</copyright>
</info>
<refmeta>
<refentrytitle>glDepthMask</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refname>glDepthMask</refname>
<refpurpose>enable or disable writing into the depth buffer</refpurpose>
</refnamediv>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glDepthMask</function></funcdef>
<paramdef>GLboolean <parameter>flag</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 xml:id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>flag</parameter></term>
<listitem>
<para>
Specifies whether the depth buffer is enabled for writing.
If <parameter>flag</parameter> is <constant>GL_FALSE</constant>,
depth buffer writing is disabled.
Otherwise, it is enabled.
Initially, depth buffer writing is enabled.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 xml:id="description"><title>Description</title>
<para>
<function>glDepthMask</function> specifies whether the depth buffer is enabled for writing.
If <parameter>flag</parameter> is <constant>GL_FALSE</constant>,
depth buffer writing is disabled.
Otherwise, it is enabled.
Initially, depth buffer writing is enabled.
</para>
</refsect1>
<refsect1 xml:id="associatedgets"><title>Associated Gets</title>
<para>
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_DEPTH_WRITEMASK</constant>
</para>
</refsect1>
<refsect1 xml:id="notes"><title>Notes</title>
<para>
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 <constant>GL_ALWAYS</constant> (see <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry>).
</para>
</refsect1>
<refsect1 xml:id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glColorMask</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glStencilMask</refentrytitle></citerefentry>
</para>
</refsect1>
<refsect1 xml:id="Copyright"><title>Copyright</title>
<para>
Copyright <trademark class="copyright"/> 1991-2006 Silicon Graphics, Inc.
Copyright <trademark class="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
<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</link>.
</para>
</refsect1>
</refentry>