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<!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="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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>⁢</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>