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7<title>glActiveTexture</title>
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10<h1>glActiveTexture Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14GL_APICALL void GL_APIENTRY glActiveTexture(
15     GLenum texture
16);
17</pre>
18    </div>
19<h2>Arguments</h2>
20    <div class="section">
21      <table class="arguments">
22        <thead>
23          <tr>
24            <td width="15" />
25<th>Name</th>
26<td>Description</td>
27          </tr>
28        </thead>
29        <tr>
30<td>in</td>
31<th>texture</th>
32<td>Texture unit to activate</td>
33        </tr> </table>
34    </div>
35<h2>Return Values</h2>
36<div class="section">No values are returned. </div>
37<h2>Description</h2>
38    <div class="section">
39<p>Activates a texture unit.</p><P>
40Set <span class="argument">texture</span> to <code>GL_TEXTUREi</code>.
41            </P><P>
42The value of <B><I>i</I></B> is greater than or equal to 0 and is at least one less than the number of supported texture units. To get the number of supported texture units, specify <code>GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</code> to the <code>glGetIntegerv</code> function. You cannot specify <code>GL_TEXTURE3</code>, which is specific to procedural textures.
43            </P><P>
44This function generates the following errors.
45<TABLE><TR><TH>GL_INVALID_ENUM</TH><TD>The <span class="argument">texture</span> argument was set to an invalid value.</TD></TR></TABLE><!-- source                                      textureに不正な値を指定した場合、エラーGL_INVALID_ENUMが生成されます。                 --></P></div>
46<h2>Revision History</h2>
47    <div class="section">
48      <dl class="history">
49        <dt>2010/01/07</dt>
50<dd>Initial version.<br />
51        </dd>
52      </dl>
53    </div>
54  <hr><p>CONFIDENTIAL</p></body>
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