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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>glShaderSource - OpenGL 4 Reference Pages</title>
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<header/>
<div class="refentry" id="glShaderSource">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>glShaderSource — Replaces the source code in a shader object</p>
</div>
<div class="refsynopsisdiv">
<h2>C Specification</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">void <strong class="fsfunc">glShaderSource</strong>(</code>
</td>
<td>GLuint <var class="pdparam">shader</var>, </td>
</tr>
<tr>
<td> </td>
<td>GLsizei <var class="pdparam">count</var>, </td>
</tr>
<tr>
<td> </td>
<td>const GLchar **<var class="pdparam">string</var>, </td>
</tr>
<tr>
<td> </td>
<td>const GLint *<var class="pdparam">length</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="parameters">
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<em class="parameter">
<code>shader</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the handle of the shader object
whose source code is to be replaced.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>count</code>
</em>
</span>
</dt>
<dd>
<p>Specifies the number of elements in the
<em class="parameter"><code>string</code></em> and
<em class="parameter"><code>length</code></em>
arrays.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>string</code>
</em>
</span>
</dt>
<dd>
<p>Specifies an array of pointers to strings
containing the source code to be loaded into the
shader.</p>
</dd>
<dt>
<span class="term">
<em class="parameter">
<code>length</code>
</em>
</span>
</dt>
<dd>
<p>Specifies an array of string lengths.</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p><code class="function">glShaderSource</code> sets the source code
in <em class="parameter"><code>shader</code></em> to the source code in the array
of strings specified by <em class="parameter"><code>string</code></em>. Any
source code previously stored in the shader object is completely
replaced. The number of strings in the array is specified by
<em class="parameter"><code>count</code></em>. If <em class="parameter"><code>length</code></em>
is <code class="constant">NULL</code>, each string is assumed to be null
terminated. If <em class="parameter"><code>length</code></em> is a value other
than <code class="constant">NULL</code>, it points to an array containing
a string length for each of the corresponding elements of
<em class="parameter"><code>string</code></em>. Each element in the
<em class="parameter"><code>length</code></em> array may contain the length of
the corresponding string (the null character is not counted as
part of the string length) or a value less than 0 to indicate
that the string is null terminated. The source code strings are
not scanned or parsed at this time; they are simply copied into
the specified shader object.</p>
</div>
<div class="refsect1" id="notes">
<h2>Notes</h2>
<p>OpenGL copies the shader source code strings when
<code class="function">glShaderSource</code> is called, so an application
may free its copy of the source code strings immediately after
the function returns.</p>
</div>
<div class="refsect1" id="errors">
<h2>Errors</h2>
<p><code class="constant">GL_INVALID_VALUE</code> is generated if
<em class="parameter"><code>shader</code></em> is not a value generated by
OpenGL.</p>
<p><code class="constant">GL_INVALID_OPERATION</code> is generated if
<em class="parameter"><code>shader</code></em> is not a shader object.</p>
<p><code class="constant">GL_INVALID_VALUE</code> is generated if
<em class="parameter"><code>count</code></em> is less than 0.</p>
</div>
<div class="refsect1" id="associatedgets">
<h2>Associated Gets</h2>
<p><a class="citerefentry" href="glGetShader.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetShader</span></span></a>
with arguments <em class="parameter"><code>shader</code></em> and
<code class="constant">GL_SHADER_SOURCE_LENGTH</code></p>
<p><a class="citerefentry" href="glGetShaderSource.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetShaderSource</span></span></a>
with argument <em class="parameter"><code>shader</code></em></p>
<p>
<a class="citerefentry" href="glIsShader.xhtml">
<span class="citerefentry">
<span class="refentrytitle">glIsShader</span>
</span>
</a>
</p>
</div>
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; "/>
<col style="text-align: center; " class="firstvers"/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; " class="lastvers"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; ">
</th>
<th style="text-align: center; border-bottom: 2px solid ; " colspan="12">
<span class="bold"><strong>OpenGL Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function / Feature Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.4</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.5</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="function">glShaderSource</code>
</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; ">✔</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p><a class="citerefentry" href="glCompileShader.xhtml"><span class="citerefentry"><span class="refentrytitle">glCompileShader</span></span></a>,
<a class="citerefentry" href="glCreateShader.xhtml"><span class="citerefentry"><span class="refentrytitle">glCreateShader</span></span></a>,
<a class="citerefentry" href="glDeleteShader.xhtml"><span class="citerefentry"><span class="refentrytitle">glDeleteShader</span></span></a></p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 2003-2005 3Dlabs Inc. Ltd.
Copyright <span class="trademark"/>© 2010-2014 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="link" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
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