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457 lines
22 KiB
XML
457 lines
22 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
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"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
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<refentry id="glMultiTexCoord">
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<refmeta>
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<refmetainfo>
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<copyright>
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<year>1991-2006</year>
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<holder>Silicon Graphics, Inc.</holder>
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</copyright>
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</refmetainfo>
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<refentrytitle>glMultiTexCoord</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glMultiTexCoord</refname>
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<refpurpose>set the current texture coordinates</refpurpose>
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</refnamediv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1s</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLshort <parameter>s</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1i</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLint <parameter>s</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1f</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLfloat <parameter>s</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1d</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLdouble <parameter>s</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2s</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLshort <parameter>s</parameter></paramdef>
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<paramdef>GLshort <parameter>t</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2i</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLint <parameter>s</parameter></paramdef>
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<paramdef>GLint <parameter>t</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2f</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLfloat <parameter>s</parameter></paramdef>
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<paramdef>GLfloat <parameter>t</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2d</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLdouble <parameter>s</parameter></paramdef>
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<paramdef>GLdouble <parameter>t</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3s</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLshort <parameter>s</parameter></paramdef>
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<paramdef>GLshort <parameter>t</parameter></paramdef>
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<paramdef>GLshort <parameter>r</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3i</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLint <parameter>s</parameter></paramdef>
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<paramdef>GLint <parameter>t</parameter></paramdef>
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<paramdef>GLint <parameter>r</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3f</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLfloat <parameter>s</parameter></paramdef>
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<paramdef>GLfloat <parameter>t</parameter></paramdef>
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<paramdef>GLfloat <parameter>r</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3d</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLdouble <parameter>s</parameter></paramdef>
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<paramdef>GLdouble <parameter>t</parameter></paramdef>
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<paramdef>GLdouble <parameter>r</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4s</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLshort <parameter>s</parameter></paramdef>
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<paramdef>GLshort <parameter>t</parameter></paramdef>
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<paramdef>GLshort <parameter>r</parameter></paramdef>
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<paramdef>GLshort <parameter>q</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4i</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLint <parameter>s</parameter></paramdef>
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<paramdef>GLint <parameter>t</parameter></paramdef>
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<paramdef>GLint <parameter>r</parameter></paramdef>
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<paramdef>GLint <parameter>q</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4f</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLfloat <parameter>s</parameter></paramdef>
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<paramdef>GLfloat <parameter>t</parameter></paramdef>
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<paramdef>GLfloat <parameter>r</parameter></paramdef>
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<paramdef>GLfloat <parameter>q</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4d</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>GLdouble <parameter>s</parameter></paramdef>
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<paramdef>GLdouble <parameter>t</parameter></paramdef>
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<paramdef>GLdouble <parameter>r</parameter></paramdef>
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<paramdef>GLdouble <parameter>q</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<!-- eqn: ignoring delim $$ -->
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<refsect1 id="parameters"><title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><parameter>target</parameter></term>
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<listitem>
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<para>
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Specifies the texture unit whose coordinates should be modified. The number
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of texture units is implementation dependent, but must be at least
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two. Symbolic constant must be one of
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<constant>GL_TEXTURE</constant><inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation>,
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where i ranges from 0 to <constant>GL_MAX_TEXTURE_COORDS</constant> - 1,
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which is an implementation-dependent value.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>s</parameter></term>
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<term><parameter>t</parameter></term>
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<term><parameter>r</parameter></term>
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<term><parameter>q</parameter></term>
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<listitem>
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<para>
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Specify <parameter>s</parameter>, <parameter>t</parameter>, <parameter>r</parameter>, and <parameter>q</parameter> texture coordinates for
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<parameter>target</parameter> texture unit. Not all parameters are present in all forms
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of the command.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1sv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLshort * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1iv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLint * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1fv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord1dv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2sv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLshort * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2iv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLint * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2fv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord2dv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3sv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLshort * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3iv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLint * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3fv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord3dv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4sv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLshort * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4iv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLint * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4fv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glMultiTexCoord4dv</function></funcdef>
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<paramdef>GLenum <parameter>target</parameter></paramdef>
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<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1 id="parameters2"><title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><parameter>target</parameter></term>
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<listitem>
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<para>
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Specifies the texture unit whose coordinates should be modified. The number
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of texture units is implementation dependent, but must be at least
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two. Symbolic constant must be one of
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<constant>GL_TEXTURE</constant><inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation>,
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where i ranges from 0 to <constant>GL_MAX_TEXTURE_COORDS</constant> - 1,
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which is an implementation-dependent value.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>v</parameter></term>
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<listitem>
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<para>
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Specifies a pointer to an array of one, two, three, or four elements,
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which in turn specify the
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<inlineequation><mml:math><mml:mi mathvariant="italic">s</mml:mi></mml:math></inlineequation>,
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<inlineequation><mml:math><mml:mi mathvariant="italic">t</mml:mi></mml:math></inlineequation>,
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<inlineequation><mml:math><mml:mi mathvariant="italic">r</mml:mi></mml:math></inlineequation>,
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and
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<inlineequation><mml:math><mml:mi mathvariant="italic">q</mml:mi></mml:math></inlineequation>
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texture coordinates.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id="description"><title>Description</title>
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<para>
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<function>glMultiTexCoord</function> specifies texture coordinates in one, two, three, or four
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dimensions.
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<function>glMultiTexCoord1</function> sets the current texture
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coordinates to
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<inlineequation><mml:math>
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<!-- eqn: (s, 0, 0, 1):-->
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<mml:mfenced open="(" close=")">
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<mml:mi mathvariant="italic">s</mml:mi>
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<mml:mn>0</mml:mn>
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<mml:mn>0</mml:mn>
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<mml:mn>1</mml:mn>
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</mml:mfenced>
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</mml:math></inlineequation>;
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a call to <function>glMultiTexCoord2</function>
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sets them to
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<inlineequation><mml:math>
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<!-- eqn: (s, t, 0, 1):-->
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<mml:mfenced open="(" close=")">
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<mml:mi mathvariant="italic">s</mml:mi>
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<mml:mi mathvariant="italic">t</mml:mi>
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<mml:mn>0</mml:mn>
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<mml:mn>1</mml:mn>
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</mml:mfenced>
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</mml:math></inlineequation>.
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Similarly, <function>glMultiTexCoord3</function> specifies the texture coordinates as
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<inlineequation><mml:math>
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<!-- eqn: (s, t, r, 1):-->
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<mml:mfenced open="(" close=")">
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<mml:mi mathvariant="italic">s</mml:mi>
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<mml:mi mathvariant="italic">t</mml:mi>
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<mml:mi mathvariant="italic">r</mml:mi>
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<mml:mn>1</mml:mn>
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</mml:mfenced>
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</mml:math></inlineequation>,
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and
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<function>glMultiTexCoord4</function>
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defines all four components explicitly as
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<inlineequation><mml:math>
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<!-- eqn: (s, t, r, q):-->
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<mml:mfenced open="(" close=")">
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<mml:mi mathvariant="italic">s</mml:mi>
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<mml:mi mathvariant="italic">t</mml:mi>
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<mml:mi mathvariant="italic">r</mml:mi>
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<mml:mi mathvariant="italic">q</mml:mi>
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</mml:mfenced>
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</mml:math></inlineequation>.
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</para>
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<para>
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The current texture coordinates are part of the data
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that is associated with each vertex and with the current
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raster position.
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Initially, the values for
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<inlineequation><mml:math>
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<!-- eqn: (s, t, r, q):-->
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<mml:mfenced open="(" close=")">
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<mml:mi mathvariant="italic">s</mml:mi>
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<mml:mi mathvariant="italic">t</mml:mi>
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<mml:mi mathvariant="italic">r</mml:mi>
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<mml:mi mathvariant="italic">q</mml:mi>
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</mml:mfenced>
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</mml:math></inlineequation>
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are
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<inlineequation><mml:math>
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<!-- eqn: (0, 0, 0, 1):-->
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<mml:mfenced open="(" close=")">
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<mml:mn>0</mml:mn>
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<mml:mn>0</mml:mn>
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<mml:mn>0</mml:mn>
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<mml:mn>1</mml:mn>
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</mml:mfenced>
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</mml:math></inlineequation>.
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</para>
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<para>
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</para>
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</refsect1>
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<refsect1 id="notes"><title>Notes</title>
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<para>
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<function>glMultiTexCoord</function> is only supported if the GL version is 1.3 or greater, or if
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<code>ARB_multitexture</code> is included in the string returned by
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<citerefentry><refentrytitle>glGetString</refentrytitle></citerefentry> when called with the argument <constant>GL_EXTENSIONS</constant>.
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</para>
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<para>
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The current texture coordinates can be updated at any time.
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In particular,
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<function>glMultiTexCoord</function> can be called between a call to <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry> and the corresponding
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call to <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
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</para>
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<para>
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It is always the case that <constant>GL_TEXTURE</constant>
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<inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation>
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= <constant>GL_TEXTURE0</constant> +
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<inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation>.
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</para>
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</refsect1>
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<refsect1 id="associatedgets"><title>Associated Gets</title>
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|
<para>
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|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_TEXTURE_COORDS</constant> with appropriate
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|
texture unit selected.
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|
</para>
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|
<para>
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|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MAX_TEXTURE_COORDS</constant>
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|
</para>
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|
</refsect1>
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|
<refsect1 id="seealso"><title>See Also</title>
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|
<para>
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|
<citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>,
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|
<citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexCoord</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glVertex</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>
|