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7<title>glGetUniformLocation</title>
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10<h1><CODE>glGetUniformLocation</CODE> Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14GL_APICALL int GL_APIENTRY glGetUniformLocation(
15     GLuint program,
16     const char * name
17);
18</pre>
19    </div>
20<h2>Arguments</h2>
21    <div class="section">
22      <table class="arguments">
23        <thead>
24          <tr>
25            <td width="15" />
26<th>Name</th>
27<td>Description</td>
28          </tr>
29        </thead>
30        <tr>
31<td>in</td>
32<th>program</th>
33<td>Program object</td>
34        </tr>
35        <tr>
36<td>in</td>
37<th>name</th>
38<td>Name of uniform variable</td>
39        </tr> </table>
40    </div>
41<h2>Return Values</h2>
42<div class="section">Location of uniform variable </div>
43<h2>Description</h2>
44    <div class="section">
45<p>Gets the location of a uniform variable.</p><P>
46The location is used to get and set the uniform variable's values. Set <span class="argument">program</span> to the program object. Set <code>name</code> to the name of the uniform variable whose location is to be obtained. If the uniform variable specified by <code>name</code> is found in the program, its location is returned. If it is not found or an error occurs, a value of -1 is returned.
47            </P><P>
48To specify the element to access in a uniform variable array, add an offset to the obtained location. If you add <code>i</code> to the location, it is handled as the location of the (<CODE>i+1</CODE>)th element of the uniform variable array.
49            </P><P>
50This function generates the following errors.
51<TABLE><TR><TH>GL_INVALID_VALUE</TH><TD>The <span class="argument">program</span> argument was set to an invalid value.</TD></TR><TR><TH>GL_INVALID_OPERATION</TH><TD>The <span class="argument">program</span> argument is not linked correctly.</TD></TR></TABLE><!-- source                                      programに不正な値を指定した場合エラーGL_INVALID_VALUEを生成します。 programが正しくリンクされていない場合エラーGL_INVALID_OPERATIONを生成します。                 --></P></div>
52<h2>Revision History</h2>
53    <div class="section">
54      <dl class="history">
55        <dt>2010/01/07</dt>
56<dd>Initial version.<br />
57        </dd>
58      </dl>
59    </div>
60  <hr><p>CONFIDENTIAL</p></body>
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