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renderer=
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"Content-Type" content=
"text/html; charset=UTF-8" /><title>glAttachShader
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.73.2" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glAttachShader"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glAttachShader — Attaches a shader object to a program 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">glAttachShader
</b>(
</code></td><td>GLuint
</td><td><var class=
"pdparam">program
</var>,
</td></tr><tr><td> </td><td>GLuint
</td><td><var class=
"pdparam">shader
</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>program
</code></em></span></dt><dd><p>Specifies the program object to which a shader
4 object will be attached.
</p></dd><dt><span class=
"term"><em class=
"parameter"><code>shader
</code></em></span></dt><dd><p>Specifies the shader object that is to be attached.
</p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>In order to create an executable, there must be a way to
5 specify the list of things that will be linked together. Program
6 objects provide this mechanism. Shaders that are to be linked
7 together in a program object must first be attached to that
8 program object.
<code class=
"function">glAttachShader
</code> attaches the
9 shader object specified by
<em class=
"parameter"><code>shader
</code></em> to the
10 program object specified by
<em class=
"parameter"><code>program
</code></em>. This
11 indicates that
<em class=
"parameter"><code>shader
</code></em> will be included in
12 link operations that will be performed on
13 <em class=
"parameter"><code>program
</code></em>.
</p><p>All operations that can be performed on a shader object
14 are valid whether or not the shader object is attached to a
15 program object. It is permissible to attach a shader object to a
16 program object before source code has been loaded into the
17 shader object or before the shader object has been compiled. It
18 is permissible to attach multiple shader objects of the same
19 type because each may contain a portion of the complete shader.
20 It is also permissible to attach a shader object to more than
21 one program object. If a shader object is deleted while it is
22 attached to a program object, it will be flagged for deletion,
23 and deletion will not occur until
24 <a class=
"citerefentry" href=
"glDetachShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDetachShader
</span></span></a>
25 is called to detach it from all program objects to which it is
26 attached.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"notes"></a><h2>Notes
</h2><p><code class=
"function">glAttachShader
</code>
27 is available only 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 either
28 <em class=
"parameter"><code>program
</code></em> or
<em class=
"parameter"><code>shader
</code></em>
29 is not a value generated by OpenGL.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
30 <em class=
"parameter"><code>program
</code></em> is not a program object.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
31 <em class=
"parameter"><code>shader
</code></em> is not a shader object.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
32 <em class=
"parameter"><code>shader
</code></em> is already attached to
33 <em class=
"parameter"><code>program
</code></em>.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
34 <code class=
"function">glAttachShader
</code> is executed between the
36 <a class=
"citerefentry" href=
"glBegin.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glBegin
</span></span></a>
37 and the corresponding execution of
38 <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=
"glGetAttachedShaders.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetAttachedShaders
</span></span></a>
39 with the handle of a valid program object
</p><p><a class=
"citerefentry" href=
"glIsProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glIsProgram
</span></span></a></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=
"glCompileShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCompileShader
</span></span></a>,
40 <a class=
"citerefentry" href=
"glDetachShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDetachShader
</span></span></a>,
41 <a class=
"citerefentry" href=
"glLinkProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glLinkProgram
</span></span></a>,
42 <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>
43 Copyright
<span class=
"trademark"></span>©
2003-
2005 3Dlabs Inc. Ltd.
44 This material may be distributed subject to the terms and conditions set forth in
45 the Open Publication License, v
1.0,
8 June
1999.
46 <a class=
"ulink" href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
47 </p></div></div></body></html>
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