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<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glUseProgramStages">
    <info>
        <copyright>
            <year>2010-2013</year>
            <holder>Khronos Group</holder>
        </copyright>
    </info>
    <refmeta>
        <refentrytitle>glUseProgramStages</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glUseProgramStages</refname>
        <refpurpose>bind stages of a program object to a program pipeline</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>void <function>glUseProgramStages</function></funcdef>
                <paramdef>GLuint <parameter>pipeline</parameter></paramdef>
                <paramdef>GLbitfield <parameter>stages</parameter></paramdef>
                <paramdef>GLuint <parameter>program</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <refsect1 xml:id="parameters"><title>Parameters</title>
        <variablelist>
        <varlistentry>
            <term><parameter>pipeline</parameter></term>
            <listitem>
            <para>
                Specifies the program pipeline object to which to bind stages from <parameter>program</parameter>.
            </para>
            </listitem>
        </varlistentry>
        <varlistentry>
            <term><parameter>stages</parameter></term>
            <listitem>
            <para>
                Specifies a set of program stages to bind to the program pipeline object.
            </para>
            </listitem>
        </varlistentry>
        <varlistentry>
            <term><parameter>program</parameter></term>
            <listitem>
            <para>
                Specifies the program object containing the shader executables to use in <parameter>pipeline</parameter>.
            </para>
            </listitem>
        </varlistentry>
        </variablelist>
    </refsect1>
    <refsect1 xml:id="description"><title>Description</title>
        <para>
            <function>glUseProgramStages</function> binds executables from a program object
            associated with a specified set of shader stages to the program pipeline object given
            by <parameter>pipeline</parameter>.
            <parameter>pipeline</parameter> specifies the program pipeline object to which to bind
            the executables. <parameter>stages</parameter> contains a logical combination of bits
            indicating the shader stages to use within <parameter>program</parameter> with the program
            pipeline object <parameter>pipeline</parameter>. <parameter>stages</parameter> must be
            a logical combination of <constant>GL_VERTEX_SHADER_BIT</constant>,
            <constant>GL_TESS_CONTROL_SHADER_BIT</constant>, <constant>GL_TESS_EVALUATION_SHADER_BIT</constant>,
            <constant>GL_GEOMETRY_SHADER_BIT</constant>, <constant>GL_FRAGMENT_SHADER_BIT</constant> and <constant>GL_COMPUTE_SHADER_BIT</constant>.
            Additionally, the special value <constant>GL_ALL_SHADER_BITS</constant> may be specified to
            indicate that all executables contained in <parameter>program</parameter> should be
            installed in <parameter>pipeline</parameter>.
        </para>
        <para>
            If <parameter>program</parameter> refers to a program object with a valid shader attached for
            an indicated shader stage, <function>glUseProgramStages</function> installs the executable
            code for that stage in the indicated program pipeline object <parameter>pipeline</parameter>.
            If <parameter>program</parameter> is zero, or refers to a program object with no valid shader
            executable for a given stage, it is as if the pipeline object has no programmable stage configured
            for the indicated shader stages. If <parameter>stages</parameter> contains bits other than those
            listed above, and is not equal to <constant>GL_ALL_SHADER_BITS</constant>, an error is generated.
       </para>
    </refsect1>
    <refsect1 xml:id="notes"><title>Notes</title>
        <para>
            The <constant>GL_COMPUTE_SHADER_BIT</constant> bit is available only if the GL version is 4.3 or greater.
        </para>
    </refsect1>
    <refsect1 xml:id="errors"><title>Errors</title>
        <para>
            <constant>GL_INVALID_VALUE</constant> is generated if <parameter>shaders</parameter> contains
            set bits that are not recognized, and is not the reserved value <constant>GL_ALL_SHADER_BITS</constant>.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>program</parameter> refers
            to a program object that was not linked with its <constant>GL_PROGRAM_SEPARABLE</constant> status set.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>program</parameter> refers
            to a program object that has not been successfully linked.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>pipeline</parameter> is not
            a name previously returned from a call to <citerefentry><refentrytitle>glGenProgramPipelines</refentrytitle></citerefentry>
            or if such a name has been deleted by a call to
            <citerefentry><refentrytitle>glDeleteProgramPipelines</refentrytitle></citerefentry>.
        </para>
    </refsect1>
    <refsect1 xml:id="seealso"><title>See Also</title>
        <para>
            <citerefentry><refentrytitle>glGenProgramPipelines</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glDeleteProgramPipelines</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glIsProgramPipeline</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>
