
<refentry id="glBegin">
    <refmeta>
        <refmetainfo>
            <copyright>
                <year>1991-2006</year>
                <holder>Silicon Graphics, Inc.</holder>
            </copyright>
        </refmetainfo>
        <refentrytitle>glBegin</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glBegin</refname>
        <refpurpose>delimit the vertices of a primitive or a group of like primitives</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>void <function>glBegin</function></funcdef>
                <paramdef>GLenum <parameter>mode</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <!-- eqn: ignoring delim $$ -->
    <refsect1 id="parameters"><title>Parameters</title>
        <variablelist>
        <varlistentry>
            <term><parameter>mode</parameter></term>
            <listitem>
                <para>
                    Specifies the primitive or primitives that will be created from vertices
                    presented between <function>glBegin</function> and the subsequent <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
                    Ten symbolic constants are accepted:
                    <constant>GL_POINTS</constant>,
                    <constant>GL_LINES</constant>,
                    <constant>GL_LINE_STRIP</constant>,
                    <constant>GL_LINE_LOOP</constant>,
                    <constant>GL_TRIANGLES</constant>,
                    <constant>GL_TRIANGLE_STRIP</constant>,
                    <constant>GL_TRIANGLE_FAN</constant>,
                    <constant>GL_QUADS</constant>,
                    <constant>GL_QUAD_STRIP</constant>, and
                    <constant>GL_POLYGON</constant>.
                </para>
            </listitem>
        </varlistentry>
        </variablelist>
    </refsect1>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>void <function>glEnd</function></funcdef>
                <paramdef><parameter>void</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <refsect1 id="description"><title>Description</title>
        <para>
            <function>glBegin</function> and <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry> delimit the vertices that define a primitive or
            a group of like primitives.
            <function>glBegin</function> accepts a single argument that specifies in which of ten ways the
            vertices are interpreted.
            Taking 
            <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>
            as an integer count starting at one,
            and 
            <inlineequation><mml:math><mml:mi mathvariant="italic">N</mml:mi></mml:math></inlineequation>
            as the total number of vertices specified,
            the interpretations are as follows:
        </para>
        <variablelist>
            <varlistentry>
                <term><constant>GL_POINTS</constant></term>
                <listitem>
                    <para>
                        Treats each vertex as a single point.
                        Vertex 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>
                        defines point 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math><mml:mi mathvariant="italic">N</mml:mi></mml:math></inlineequation>
                        points are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_LINES</constant></term>
                <listitem>
                    <para>
                        Treats each pair of vertices as an independent line segment.
                        Vertices 
                        <inlineequation><mml:math>
                            <!-- eqn: 2n - 1:-->
                            <mml:mrow>
                                <mml:mn>2</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: 2n:-->
                            <mml:mrow>
                                <mml:mn>2</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define line 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N/2:-->
                            <mml:mfrac>
                                <mml:mi mathvariant="italic">N</mml:mi>
                                <mml:mn>2</mml:mn>
                            </mml:mfrac>
                        </mml:math></inlineequation>
                        lines are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_LINE_STRIP</constant></term>
                <listitem>
                    <para>
                        Draws a connected group of line segments from the first vertex
                        to the last.
                        Vertices 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: n + 1:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define line 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N - 1:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">N</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        lines are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_LINE_LOOP</constant></term>
                <listitem>
                    <para>
                        Draws a connected group of line segments from the first vertex
                        to the last,
                        then back to the first.
                        Vertices 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: n + 1:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define line 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        The last line, however, is defined by vertices 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">N</mml:mi></mml:math></inlineequation>
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: 1:-->
                            <mml:mn>1</mml:mn>
                        </mml:math></inlineequation>.
                        <inlineequation><mml:math><mml:mi mathvariant="italic">N</mml:mi></mml:math></inlineequation>
                        lines are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_TRIANGLES</constant></term>
                <listitem>
                    <para>
                        Treats each triplet of vertices as an independent triangle.
                        Vertices 
                        <inlineequation><mml:math>
                            <!-- eqn: 3n - 2:-->
                            <mml:mrow>
                                <mml:mn>3</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: 3n - 1:-->
                            <mml:mrow>
                                <mml:mn>3</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: 3n:-->
                            <mml:mrow>
                                <mml:mn>3</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define triangle 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N/3:-->
                            <mml:mfrac>
                                <mml:mi mathvariant="italic">N</mml:mi>
                                <mml:mn>3</mml:mn>
                            </mml:mfrac>
                        </mml:math></inlineequation>
                        triangles are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_TRIANGLE_STRIP</constant></term>
                <listitem>
                    <para>
                        Draws a connected group of triangles.  One triangle is defined for each
                        vertex presented after the first two vertices.  For odd 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>,
                        vertices
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: n + 1:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: n + 2:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define triangle 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        For even 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>,
                        vertices
                        <inlineequation><mml:math>
                            <!-- eqn: n + 1:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>,
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: n + 2:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define triangle 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N - 2:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">N</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        triangles are
                        drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_TRIANGLE_FAN</constant></term>
                <listitem>
                    <para>
                        Draws a connected group of triangles.
                        One triangle is defined for each vertex presented after the first two vertices.
                        Vertices 
                        <inlineequation><mml:math>
                            <!-- eqn: 1:-->
                            <mml:mn>1</mml:mn>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: n + 1:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: n + 2:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define triangle 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N - 2:-->
                            <mml:mrow>
                                <mml:mi mathvariant="italic">N</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        triangles are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_QUADS</constant></term>
                <listitem>
                    <para>
                        Treats each group of four vertices as an independent quadrilateral.
                        Vertices 
                        <inlineequation><mml:math>
                            <!-- eqn: 4n - 3:-->
                            <mml:mrow>
                                <mml:mn>4</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>3</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: 4n - 2:-->
                            <mml:mrow>
                                <mml:mn>4</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: 4n - 1:-->
                            <mml:mrow>
                                <mml:mn>4</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: 4n:-->
                            <mml:mrow>
                                <mml:mn>4</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define quadrilateral 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N/4:-->
                            <mml:mfrac>
                                <mml:mi mathvariant="italic">N</mml:mi>
                                <mml:mn>4</mml:mn>
                            </mml:mfrac>
                        </mml:math></inlineequation>
                        quadrilaterals are drawn.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_QUAD_STRIP</constant></term>
                <listitem>
                    <para>
                        Draws a connected group of quadrilaterals.
                        One quadrilateral is defined for each pair of vertices presented
                        after the first pair.
                        Vertices 
                        <inlineequation><mml:math>
                            <!-- eqn: 2n - 1:-->
                            <mml:mrow>
                                <mml:mn>2</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>-</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: 2n:-->
                            <mml:mrow>
                                <mml:mn>2</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        <inlineequation><mml:math>
                            <!-- eqn: 2n + 2:-->
                            <mml:mrow>
                                <mml:mn>2</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>2</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>,
                        and 
                        <inlineequation><mml:math>
                            <!-- eqn: 2n + 1:-->
                            <mml:mrow>
                                <mml:mn>2</mml:mn>
                                <mml:mo>&it;</mml:mo>
                                <mml:mi mathvariant="italic">n</mml:mi>
                                <mml:mo>+</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        define quadrilateral 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
                        <inlineequation><mml:math>
                            <!-- eqn: N/2 - 1:-->
                            <mml:mrow>
                                <mml:mfrac>
                                    <mml:mi mathvariant="italic">N</mml:mi>
                                    <mml:mn>2</mml:mn>
                                </mml:mfrac>
                                <mml:mo>-</mml:mo>
                                <mml:mn>1</mml:mn>
                            </mml:mrow>
                        </mml:math></inlineequation>
                        quadrilaterals are drawn.
                        Note that the order in which vertices are used to construct a quadrilateral
                        from strip data is different from that used with independent data.
                    </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term><constant>GL_POLYGON</constant></term>
                <listitem>
                    <para>
                        Draws a single,
                        convex polygon.
                        Vertices 
                        <inlineequation><mml:math>
                            <!-- eqn: 1:-->
                            <mml:mn>1</mml:mn>
                        </mml:math></inlineequation>
                        through 
                        <inlineequation><mml:math><mml:mi mathvariant="italic">N</mml:mi></mml:math></inlineequation>
                        define this polygon.
                    </para>
                </listitem>
            </varlistentry>
        </variablelist>
        <para>
            Only a subset of GL commands can be used between <function>glBegin</function> and <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
            The commands are
            <citerefentry><refentrytitle>glVertex</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glIndex</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glFogCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glTexCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEvalCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEvalPoint</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glArrayElement</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>, and
            <citerefentry><refentrytitle>glEdgeFlag</refentrytitle></citerefentry>.
            Also,
            it is acceptable to use
            <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry> or
            <citerefentry><refentrytitle>glCallLists</refentrytitle></citerefentry> to execute
            display lists that include only the preceding commands.
            If any other GL command is executed between <function>glBegin</function> and <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>,
            the error flag is set and the command is ignored.
        </para>
        <para>
            Regardless of the value chosen for <parameter>mode</parameter>,
            there is no limit to the number of vertices that can be defined
            between <function>glBegin</function> and <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
            Lines,
            triangles,
            quadrilaterals,
            and polygons that are incompletely specified are not drawn.
            Incomplete specification results when either too few vertices are
            provided to specify even a single primitive or when an incorrect multiple
            of vertices is specified. The incomplete primitive is ignored; the rest are drawn.
        </para>
        <para>
            The minimum specification of vertices
            for each primitive is as follows:
            1 for a point,
            2 for a line,
            3 for a triangle,
            4 for a quadrilateral,
            and 3 for a polygon.
            Modes that require a certain multiple of vertices are
            <constant>GL_LINES</constant> (2),
            <constant>GL_TRIANGLES</constant> (3),
            <constant>GL_QUADS</constant> (4),
            and <constant>GL_QUAD_STRIP</constant> (2).
        </para>
    </refsect1>
    <refsect1 id="errors"><title>Errors</title>
        <para>
            <constant>GL_INVALID_ENUM</constant> is generated if <parameter>mode</parameter> is set to an unaccepted value.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <function>glBegin</function> is executed between a
            <function>glBegin</function>
            and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry> is executed without being
            preceded by a <function>glBegin</function>.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if a command other than
            <citerefentry><refentrytitle>glVertex</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glIndex</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glFogCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glTexCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEvalCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEvalPoint</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glArrayElement</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEdgeFlag</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>, or
            <citerefentry><refentrytitle>glCallLists</refentrytitle></citerefentry> is executed between
            the execution of <function>glBegin</function> and the corresponding
            execution <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
        </para>
        <para>
            Execution of
            <citerefentry><refentrytitle>glEnableClientState</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glDisableClientState</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glVertexAttribPointer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glInterleavedArrays</refentrytitle></citerefentry>, or
            <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry> is not allowed after a call to <function>glBegin</function> and before
            the corresponding call to <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>,
            but an error may or may not be generated.
        </para>
    </refsect1>
    <refsect1 id="seealso"><title>See Also</title>
        <para>
            <citerefentry><refentrytitle>glArrayElement</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glCallLists</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEdgeFlag</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEvalCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glEvalPoint</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glFogCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glIndex</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glTexCoord</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glVertex</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry>
        </para>
    </refsect1>
    <refsect1 id="Copyright"><title>Copyright</title>
        <para>
            Copyright <trademark class="copyright"></trademark> 1991-2006
            Silicon Graphics, Inc. This document is licensed under the SGI
            Free Software B License. For details, see
            <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
        </para>
    </refsect1>
</refentry>
