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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry id="glIsFramebuffer">
<refentryinfo>
<copyright>
<year>2010-2013</year>
<holder>Khronos Group</holder>
</copyright>
</refentryinfo>
<refmeta>
<refentrytitle>glIsFramebuffer</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refname>glIsFramebuffer</refname>
<refpurpose>determine if a name corresponds to a framebuffer object</refpurpose>
</refnamediv>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>GLboolean <function>glIsFramebuffer</function></funcdef>
<paramdef>GLuint <parameter>framebuffer</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>framebuffer</parameter></term>
<listitem>
<para>
Specifies a value that may be the name of a framebuffer object.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="description"><title>Description</title>
<para>
<function>glIsFramebuffer</function> returns <constant>GL_TRUE</constant> if <parameter>framebuffer</parameter> is currently the name of a framebuffer
object. If <parameter>framebuffer</parameter> is zero, or if <constant>framebuffer</constant> is not the name of a framebuffer object, or if an error
occurs, <function>glIsFramebuffer</function> returns <constant>GL_FALSE</constant>. If <parameter>framebuffer</parameter> is a name returned by
<citerefentry><refentrytitle>glGenFramebuffers</refentrytitle></citerefentry>, by that has not yet been bound through a call to
<citerefentry><refentrytitle>glBindFramebuffer</refentrytitle></citerefentry>, then the name is not a framebuffer object and <function>glIsFramebuffer</function>
returns <constant>GL_FALSE</constant>.
</para>
</refsect1>
<refsect1 id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glGenFramebuffers</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glBindFramebuffer</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glDeleteFramebuffers</refentrytitle></citerefentry>
</para>
</refsect1>
<refsect1 id="Copyright"><title>Copyright</title>
<para>
Copyright <trademark class="copyright"></trademark> 2010-2013 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
</para>
</refsect1>
</refentry>
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