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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="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> |
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