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<refentry xmlns= "http://docbook.org/ns/docbook" version= "5.0" xml:id= "glGenTextures" >
<info >
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<copyright >
<year > 1991-2006</year>
<holder > Silicon Graphics, Inc.</holder>
</copyright>
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<copyright >
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<year > 2010-2014</year>
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<holder > Khronos Group</holder>
</copyright>
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</info>
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<refmeta >
<refentrytitle > glGenTextures</refentrytitle>
<manvolnum > 3G</manvolnum>
</refmeta>
<refnamediv >
<refname > glGenTextures</refname>
<refpurpose > generate texture names</refpurpose>
</refnamediv>
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<refsynopsisdiv >
<title > C Specification</title>
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<funcsynopsis >
<funcprototype >
<funcdef > void <function > glGenTextures</function> </funcdef>
<paramdef > GLsizei <parameter > n</parameter> </paramdef>
<paramdef > GLuint * <parameter > textures</parameter> </paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
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<refsect1 xml:id= "parameters" > <title > Parameters</title>
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<variablelist >
<varlistentry >
<term > <parameter > n</parameter> </term>
<listitem >
<para >
Specifies the number of texture names to be generated.
</para>
</listitem>
</varlistentry>
<varlistentry >
<term > <parameter > textures</parameter> </term>
<listitem >
<para >
Specifies an array in which the generated texture names are stored.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
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<refsect1 xml:id= "description" > <title > Description</title>
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<para >
<function > glGenTextures</function> returns <parameter > n</parameter> texture names in <parameter > textures</parameter> .
There is no guarantee that the names form a contiguous set of integers;
however, it is guaranteed that none of the returned names was in use
immediately before the call to <function > glGenTextures</function> .
</para>
<para >
Texture names returned by a call to <function > glGenTextures</function> are not returned by
subsequent calls, unless they are first deleted with
<citerefentry > <refentrytitle > glDeleteTextures</refentrytitle> </citerefentry> .
</para>
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<para >
The names returned in <parameter > textures</parameter> are marked as used, for the purposes of <function > glGenTextures</function> only,
but they acquire state and dimensionality only when they are first bound using <citerefentry > <refentrytitle > glBindTexture</refentrytitle> </citerefentry> .
</para>
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</refsect1>
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<refsect1 xml:id= "errors" > <title > Errors</title>
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<para >
<constant > GL_INVALID_VALUE</constant> is generated if <parameter > n</parameter> is negative.
</para>
</refsect1>
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<refsect1 xml:id= "associatedgets" > <title > Associated Gets</title>
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<para >
<citerefentry > <refentrytitle > glIsTexture</refentrytitle> </citerefentry>
</para>
</refsect1>
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<refsect1 xml:id= "versions" >
<title > API Version Support</title>
<informaltable >
<tgroup cols= "4" align= "left" >
<xi:include xmlns:xi= "http://www.w3.org/2001/XInclude" href= "apifunchead.xml" xpointer= "xpointer(/*/*)" />
<tbody >
<row >
<entry > glGenTextures</entry>
<xi:include xmlns:xi= "http://www.w3.org/2001/XInclude" href= "apiversion.xml" xpointer= "xpointer(/*/*[@role='es20']/*)" />
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 xml:id= "seealso" > <title > See Also</title>
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<para >
<citerefentry > <refentrytitle > glBindTexture</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glCopyTexImage2D</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glDeleteTextures</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glGet</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glGetTexParameter</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glTexImage2D</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glTexImage3D</refentrytitle> </citerefentry> ,
<citerefentry > <refentrytitle > glTexParameter</refentrytitle> </citerefentry>
</para>
</refsect1>
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<refsect1 xml:id= "Copyright" > <title > Copyright</title>
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<para >
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Copyright <trademark class= "copyright" /> 1991-2006 Silicon Graphics, Inc.
Copyright <trademark class= "copyright" /> 2010-2014 Khronos Group.
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This document is licensed under the SGI Free Software B License.
For details, see
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<link xmlns:xlink= "http://www.w3.org/1999/xlink" xlink:href= "http://oss.sgi.com/projects/FreeB/" > http://oss.sgi.com/projects/FreeB/</link> .
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</para>
</refsect1>
</refentry>