1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd">
<html
xmlns="http://www.w3.org/1999/xhtml"
xmlns:mml="http://www.w3.org/1998/Math/MathML"
><head><title>glActiveTextureARB</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GL.xml" title="GL"/><link rel="previous" href="glAccum.3G.xml" title="glAccum"/><link rel="next" href="glAlphaFunc.3G.xml" title="glAlphaFunc"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">glActiveTextureARB</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glAccum.3G.xml">Prev</a></td><th width="60%" align="center">GL</th><td width="20%" align="right"><a accesskey="n" href="glAlphaFunc.3G.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glActiveTextureARB.3G"/><div class="titlepage"/><div class="refnamediv"><a name="glActiveTextureARB.3G-name"/><h2>Name</h2><p>glActiveTextureARB — select active texture unit</p></div><div class="refsynopsisdiv"><a name="glActiveTextureARB.3G-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>void<tt>glActiveTextureARB</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLenum<i><tt>texture</tt></i>);</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glActiveTextureARB.3G-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glActiveTextureARB</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>texture</tt></i>) →<tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glActiveTextureARB.3G-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>texture</tt></i></span></dt><dd>
Specifies which texture unit to make active. The number of texture units is implementation dependent, but
must be at least two. <i><tt>texture</tt></i> must be one of
<tt>GL_TEXTURE<span class="emphasis"><em>i</em></span>_ARB</tt>, where <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mn>0</mml:mn>
<mml:mo>≤</mml:mo>
<mml:mi>i</mml:mi>
<mml:mo><</mml:mo>
</mml:math> <tt>GL_MAX_TEXTURE_UNITS_ARB</tt>, which is an implementation-dependent
value. The intial value is <tt>GL_TEXTURE0_ARB</tt>.
</dd></dl></div></div><div class="refsect1" lang="en"><a name="glActiveTextureARB.3G-description"/><h2>Description</h2><p>
<tt>glActiveTextureARB</tt> selects which texture unit subsequent texture state calls will affect. The
number of texture units an implementation supports is implementation dependent, but must be at least 2.
</p><p>
Vertex arrays are client-side GL resources, which are selected by the <a href="glClientActiveTextureARB.3G.xml"><tt>glClientActiveTextureARB</tt></a> routine.
</p></div><div class="refsect1" lang="en"><a name="glActiveTextureARB.3G-notes"/><h2>Notes</h2><p>
<tt>glActiveTextureARB</tt> is only supported if <tt>GL_ARB_multitexture</tt> is included in
the string returned by <a href="glGetString.3G.xml"><tt>glGetString</tt></a> when called with the argument
<tt>GL_EXTENSIONS</tt>.
</p></div><div class="refsect1" lang="en"><a name="glActiveTextureARB.3G-errors"/><h2>Errors</h2><p>
<tt>GL_INVALID_ENUM</tt> is generated if <i><tt>texture</tt></i> is not one of
<tt>GL_TEXTURE<span class="emphasis"><em>i</em></span>_ARB</tt>, where <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mn>0</mml:mn>
<mml:mo>≤</mml:mo>
<mml:mi>i</mml:mi>
<mml:mo><</mml:mo>
</mml:math> <tt>GL_MAX_TEXTURE_UNITS_ARB</tt>.
</p></div><div class="refsect1" lang="en"><a name="glActiveTextureARB.3G-see_also"/><h2>See Also</h2><p>
<span class="simplelist"><a href="glClientActiveTextureARB.3G.xml">glClientActiveTextureARB</a>, <a href="glGet.3G.xml">glGet</a>, <a href="glMultiTexCoordARB.3G.xml">glMultiTexCoordARB</a>, <a href="glTexParameter.3G.xml">glTexParameter</a></span>
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="glAccum.3G.xml">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="reference-GL.xml">Up</a></td><td width="40%" align="right"><a accesskey="n" href="glAlphaFunc.3G.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glAccum</td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top">glAlphaFunc</td></tr></table></div></body></html>
|
