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renderer=
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"text/html; charset=UTF-8" /><title>glCreateProgram
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.73.2" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glCreateProgram"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glCreateProgram — Creates 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">GLuint
<b class=
"fsfunc">glCreateProgram
</b>(
</code></td><td> </td><td><var class=
"pdparam">void
</var><code>)
</code>;
</td></tr></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p><code class=
"function">glCreateProgram
</code> creates an empty
4 program object and returns a non-zero value by which it can be
5 referenced. A program object is an object to which shader
6 objects can be attached. This provides a mechanism to specify
7 the shader objects that will be linked to create a program. It
8 also provides a means for checking the compatibility of the
9 shaders that will be used to create a program (for instance,
10 checking the compatibility between a vertex shader and a
11 fragment shader). When no longer needed as part of a program
12 object, shader objects can be detached.
</p><p>One or more executables are created in a program object by
13 successfully attaching shader objects to it with
14 <a class=
"citerefentry" href=
"glAttachShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glAttachShader
</span></span></a>,
15 successfully compiling the shader objects with
16 <a class=
"citerefentry" href=
"glCompileShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCompileShader
</span></span></a>,
17 and successfully linking the program object with
18 <a class=
"citerefentry" href=
"glLinkProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glLinkProgram
</span></span></a>.
19 These executables are made part of current state when
20 <a class=
"citerefentry" href=
"glUseProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glUseProgram
</span></span></a>
21 is called. Program objects can be deleted by calling
22 <a class=
"citerefentry" href=
"glDeleteProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDeleteProgram
</span></span></a>.
23 The memory associated with the program object will be deleted
24 when it is no longer part of current rendering state for any
25 context.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"notes"></a><h2>Notes
</h2><p><code class=
"function">glCreateProgram
</code> is available only if
26 the GL version is
2.0 or greater.
</p><p>Like display lists and texture objects, the name space for
27 program objects may be shared across a set of contexts, as long
28 as the server sides of the contexts share the same address
29 space. If the name space is shared across contexts, any attached
30 objects and the data associated with those attached objects are
31 shared as well.
</p><p>Applications are responsible for providing the
32 synchronization across API calls when objects are accessed from
33 different execution threads.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>This function returns
0 if an error occurs creating the program object.
</p><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
34 <code class=
"function">glCreateProgram
</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=
"glGet.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGet
</span></span></a>
39 with the argument
<code class=
"constant">GL_CURRENT_PROGRAM
</code></p><p><a class=
"citerefentry" href=
"glGetActiveAttrib.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetActiveAttrib
</span></span></a>
40 with a valid program object and the index of an active attribute
41 variable
</p><p><a class=
"citerefentry" href=
"glGetActiveUniform.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetActiveUniform
</span></span></a>
42 with a valid program object and the index of an active uniform
43 variable
</p><p><a class=
"citerefentry" href=
"glGetAttachedShaders.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetAttachedShaders
</span></span></a>
44 with a valid program object
</p><p><a class=
"citerefentry" href=
"glGetAttribLocation.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetAttribLocation
</span></span></a>
45 with a valid program object and the name of an attribute
46 variable
</p><p><a class=
"citerefentry" href=
"glGetProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetProgram
</span></span></a>
47 with a valid program object and the parameter to be queried
</p><p><a class=
"citerefentry" href=
"glGetProgramInfoLog.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetProgramInfoLog
</span></span></a>
48 with a valid program object
</p><p><a class=
"citerefentry" href=
"glGetUniform.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetUniform
</span></span></a>
49 with a valid program object and the location of a uniform
50 variable
</p><p><a class=
"citerefentry" href=
"glGetUniformLocation.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetUniformLocation
</span></span></a>
51 with a valid program object and the name of a uniform
52 variable
</p><p><a class=
"citerefentry" href=
"glIsProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glIsProgram
</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=
"glAttachShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glAttachShader
</span></span></a>,
53 <a class=
"citerefentry" href=
"glBindAttribLocation.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glBindAttribLocation
</span></span></a>,
54 <a class=
"citerefentry" href=
"glCreateShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCreateShader
</span></span></a>,
55 <a class=
"citerefentry" href=
"glDeleteProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDeleteProgram
</span></span></a>,
56 <a class=
"citerefentry" href=
"glDetachShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDetachShader
</span></span></a>,
57 <a class=
"citerefentry" href=
"glLinkProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glLinkProgram
</span></span></a>,
58 <a class=
"citerefentry" href=
"glUniform.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glUniform
</span></span></a>,
59 <a class=
"citerefentry" href=
"glUseProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glUseProgram
</span></span></a>,
60 <a class=
"citerefentry" href=
"glValidateProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glValidateProgram
</span></span></a></p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
61 Copyright
<span class=
"trademark"></span>©
2003-
2005 3Dlabs Inc. Ltd.
62 This material may be distributed subject to the terms and conditions set forth in
63 the Open Publication License, v
1.0,
8 June
1999.
64 <a class=
"ulink" href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
65 </p></div></div></body></html>
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