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"text/html; charset=UTF-8" /><title>glGetShaderSource
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.73.2" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glGetShaderSource"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glGetShaderSource — Returns the source code string from a shader object
</p></div><div class=
"refsynopsisdiv"><h2>C Specification
</h2><div class=
"funcsynopsis"><table border=
"0" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0"><tr><td><code class=
"funcdef">void
<b class=
"fsfunc">glGetShaderSource
</b>(
</code></td><td>GLuint
</td><td><var class=
"pdparam">shader
</var>,
</td></tr><tr><td> </td><td>GLsizei
</td><td><var class=
"pdparam">bufSize
</var>,
</td></tr><tr><td> </td><td>GLsizei *
</td><td><var class=
"pdparam">length
</var>,
</td></tr><tr><td> </td><td>GLchar *
</td><td><var class=
"pdparam">source
</var><code>)
</code>;
</td></tr></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"parameters"></a><h2>Parameters
</h2><div class=
"variablelist"><dl><dt><span class=
"term"><em class=
"parameter"><code>shader
</code></em></span></dt><dd><p>Specifies the shader object to be
4 queried.
</p></dd><dt><span class=
"term"><em class=
"parameter"><code>bufSize
</code></em></span></dt><dd><p>Specifies the size of the character buffer for
5 storing the returned source code string.
</p></dd><dt><span class=
"term"><em class=
"parameter"><code>length
</code></em></span></dt><dd><p>Returns the length of the string returned in
6 <em class=
"parameter"><code>source
</code></em> (excluding the null
7 terminator).
</p></dd><dt><span class=
"term"><em class=
"parameter"><code>source
</code></em></span></dt><dd><p>Specifies an array of characters that is used
8 to return the source code string.
</p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p><code class=
"function">glGetShaderSource
</code> returns the
9 concatenation of the source code strings from the shader object
10 specified by
<em class=
"parameter"><code>shader
</code></em>. The source code
11 strings for a shader object are the result of a previous call to
12 <a class=
"citerefentry" href=
"glShaderSource.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glShaderSource
</span></span></a>.
13 The string returned by the function will be null
14 terminated.
</p><p><code class=
"function">glGetShaderSource
</code> returns in
15 <em class=
"parameter"><code>source
</code></em> as much of the source code string
16 as it can, up to a maximum of
<em class=
"parameter"><code>bufSize
</code></em>
17 characters. The number of characters actually returned,
18 excluding the null termination character, is specified by
19 <em class=
"parameter"><code>length
</code></em>. If the length of the returned
20 string is not required, a value of
<code class=
"constant">NULL
</code> can
21 be passed in the
<em class=
"parameter"><code>length
</code></em> argument. The
22 size of the buffer required to store the returned source code
23 string can be obtained by calling
24 <a class=
"citerefentry" href=
"glGetShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetShader
</span></span></a>
26 <code class=
"constant">GL_SHADER_SOURCE_LENGTH
</code>.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"notes"></a><h2>Notes
</h2><p><code class=
"function">glGetShaderSource
</code> is available only
27 if the GL version is
2.0 or greater.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p><code class=
"constant">GL_INVALID_VALUE
</code> is generated if
28 <em class=
"parameter"><code>shader
</code></em> is not a value generated by
29 OpenGL.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
30 <em class=
"parameter"><code>shader
</code></em> is not a shader object.
</p><p><code class=
"constant">GL_INVALID_VALUE
</code> is generated if
31 <em class=
"parameter"><code>bufSize
</code></em> is less than
0.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
32 <code class=
"function">glGetShaderSource
</code> is executed between the
34 <a class=
"citerefentry" href=
"glBegin.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glBegin
</span></span></a>
35 and the corresponding execution of
36 <a class=
"citerefentry" href=
"glEnd.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glEnd
</span></span></a>.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"associatedgets"></a><h2>Associated Gets
</h2><p><a class=
"citerefentry" href=
"glGetShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetShader
</span></span></a>
38 <code class=
"constant">GL_SHADER_SOURCE_LENGTH
</code></p><p><a class=
"citerefentry" href=
"glIsShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glIsShader
</span></span></a></p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p><a class=
"citerefentry" href=
"glCreateShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCreateShader
</span></span></a>,
39 <a class=
"citerefentry" href=
"glShaderSource.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glShaderSource
</span></span></a></p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
40 Copyright
<span class=
"trademark"></span>©
2003-
2005 3Dlabs Inc. Ltd.
41 This material may be distributed subject to the terms and conditions set forth in
42 the Open Publication License, v
1.0,
8 June
1999.
43 <a class=
"ulink" href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
44 </p></div></div></body></html>