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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="glUseProgramStages">
<refentryinfo>
<copyright>
<year>2010-2013</year>
<holder>Khronos Group</holder>
</copyright>
</refentryinfo>
<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 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 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 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 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 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 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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