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7<title>glUniform4f</title>
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10<h1><CODE>glUniform4f</CODE> Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14GL_APICALL void GL_APIENTRY glUniform4f(
15     GLint location,
16     GLfloat x,
17     GLfloat y,
18     GLfloat z,
19     GLfloat w
20);
21</pre>
22    </div>
23<h2>Arguments</h2>
24    <div class="section">
25      <table class="arguments">
26        <thead>
27          <tr>
28            <td width="15" />
29<th>Name</th>
30<td>Description</td>
31          </tr>
32        </thead>
33        <tr>
34<td>in</td>
35<th>location</th>
36<td>Location of uniform variable</td>
37        </tr>
38        <tr>
39<td>in</td>
40<th>x</th>
41<td>Value to set for the first component</td>
42        </tr>
43        <tr>
44<td>in</td>
45<th>y</th>
46<td>Value to set for the second component</td>
47        </tr>
48        <tr>
49<td>in</td>
50<th>z</th>
51<td>Value to set for the third component</td>
52        </tr>
53        <tr>
54<td>in</td>
55<th>w</th>
56<td>Value to set for the fourth component</td>
57        </tr> </table>
58    </div>
59<h2>Return Values</h2>
60<div class="section">No values are returned. </div>
61<h2>Description</h2>
62    <div class="section">
63<p>Sets the value of a <CODE>GL_FLOAT_VEC4</CODE>-type uniform variable, or a single element of a <CODE>GL_FLOAT_VEC4</CODE>-type uniform variable array, in the vertex shader, geometry shader, or reserved fragment shader.</p><P>
64Set <span class="argument">location</span> to the uniform variable's location. Use <span class="argument">x</span>, <span class="argument">y</span>, <span class="argument">z</span>, and <span class="argument">w</span> to specify the values to set.
65            </P><P>
66Calls to this function are ignored when <span class="argument">location</span> is -1.
67            </P><P>
68This function generates the following errors.
69<TABLE><TR><TH>GL_INVALID_OPERATION</TH><TD>The <span class="argument">location</span> argument is not a location in the current program.</TD></TR><TR><TH>GL_INVALID_OPERATION</TH><TD>There is no current program object.</TD></TR><TR><TH>GL_INVALID_OPERATION</TH><TD>This function was called on a location with a different data type or component count.</TD></TR><TR><TH>GL_INVALID_OPERATION</TH><TD>The uniform variable array is smaller than the offset added to the location obtained from <CODE>glGetUniformLocation</CODE>.</TD></TR></TABLE><!-- source                      locationがカレントのプログラムのロケーションではない場合エラーGL_INVALID_OPERATIONを生成します。 カレントにプログラムがない場合エラーGL_INVALID_OPERATIONを生成します。 データのコンポーネント数、および型の異なるロケーションに対して呼び出した場合エラーGL_INVALID_OPERATIONを生成します。 glGetUniformLocationで取得されるロケーションの値に加算したオフセットが ユニフォームの配列数を超える場合エラーGL_INVALID_OPERATIONを生成します。 予約フラグメントシェーダのユニフォームに設定範囲が決められている場合、 x、y、z、wに設定範囲外の値を指定するとエラーGL_INVALID_VALUE、またはGL_INVALID_ENUMのいずれかを生成します。                 --></P></div>
70<h2>Revision History</h2>
71    <div class="section">
72      <dl class="history">
73        <dt>2010/01/07</dt>
74<dd>Initial version.<br />
75        </dd>
76      </dl>
77    </div>
78  <hr><p>CONFIDENTIAL</p></body>
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