<!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="glIsFramebuffer"> <info> <copyright> <year>2010-2013</year> <holder>Khronos Group</holder> </copyright> </info> <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 xml: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 xml: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 xml: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 xml:id="Copyright"><title>Copyright</title> <para> Copyright <trademark class="copyright"/> 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. <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://opencontent.org/openpub/">http://opencontent.org/openpub/</link>. </para> </refsect1> </refentry>