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3 <?xml-stylesheet type=
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"Content-Type" content=
"text/html; charset=UTF-8" /><title>glIsProgram
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.73.2" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glIsProgram"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glIsProgram — Determines if a name corresponds 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">GLboolean
<b class=
"fsfunc">glIsProgram
</b>(
</code></td><td>GLuint
</td><td><var class=
"pdparam">program
</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 a potential program object.
</p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p><code class=
"function">glIsProgram
</code> returns
4 <code class=
"constant">GL_TRUE
</code> if
<em class=
"parameter"><code>program
</code></em>
5 is the name of a program object previously created with
6 <a class=
"citerefentry" href=
"glCreateProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCreateProgram
</span></span></a>
7 and not yet deleted with
<a class=
"citerefentry" href=
"glDeleteProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDeleteProgram
</span></span></a>.
8 If
<em class=
"parameter"><code>program
</code></em> is zero or a non-zero value that
9 is not the name of a program object, or if an error occurs,
10 <code class=
"function">glIsProgram
</code> returns
<code class=
"constant">GL_FALSE
</code>.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"notes"></a><h2>Notes
</h2><p><code class=
"function">glIsProgram
</code> is available only if the
11 GL version is
2.0 or greater.
</p><p>No error is generated if
<em class=
"parameter"><code>program
</code></em> is
12 not a valid program object name.
</p><p>A program object marked for deletion with
<a class=
"citerefentry" href=
"glDeleteProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDeleteProgram
</span></span></a>
13 but still in use as part of current rendering state is still considered
14 a program object and
<code class=
"function">glIsProgram
</code> will return
<code class=
"constant">GL_TRUE
</code>.
</p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p><code class=
"constant">GL_INVALID_OPERATION
</code> is generated if
15 <code class=
"function">glIsProgram
</code> is executed between the
17 <a class=
"citerefentry" href=
"glBegin.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glBegin
</span></span></a>
18 and the corresponding execution of
19 <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>
20 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>
21 with arguments
<em class=
"parameter"><code>program
</code></em> and the index of
22 an active attribute variable
</p><p><a class=
"citerefentry" href=
"glGetActiveUniform.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetActiveUniform
</span></span></a>
23 with arguments
<em class=
"parameter"><code>program
</code></em> and the index of
24 an active uniform variable
</p><p><a class=
"citerefentry" href=
"glGetAttachedShaders.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetAttachedShaders
</span></span></a>
25 with argument
<em class=
"parameter"><code>program
</code></em></p><p><a class=
"citerefentry" href=
"glGetAttribLocation.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetAttribLocation
</span></span></a>
26 with arguments
<em class=
"parameter"><code>program
</code></em> and the name of an
27 attribute variable
</p><p><a class=
"citerefentry" href=
"glGetProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetProgram
</span></span></a>
28 with arguments
<em class=
"parameter"><code>program
</code></em> and the parameter
29 to be queried
</p><p><a class=
"citerefentry" href=
"glGetProgramInfoLog.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetProgramInfoLog
</span></span></a>
30 with argument
<em class=
"parameter"><code>program
</code></em></p><p><a class=
"citerefentry" href=
"glGetUniform.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetUniform
</span></span></a>
31 with arguments
<em class=
"parameter"><code>program
</code></em> and the location
32 of a uniform variable
</p><p><a class=
"citerefentry" href=
"glGetUniformLocation.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGetUniformLocation
</span></span></a>
33 with arguments
<em class=
"parameter"><code>program
</code></em> and the name of a
34 uniform variable
</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>,
35 <a class=
"citerefentry" href=
"glBindAttribLocation.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glBindAttribLocation
</span></span></a>,
36 <a class=
"citerefentry" href=
"glCreateProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glCreateProgram
</span></span></a>,
37 <a class=
"citerefentry" href=
"glDeleteProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDeleteProgram
</span></span></a>,
38 <a class=
"citerefentry" href=
"glDetachShader.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDetachShader
</span></span></a>,
39 <a class=
"citerefentry" href=
"glLinkProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glLinkProgram
</span></span></a>,
40 <a class=
"citerefentry" href=
"glUniform.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glUniform
</span></span></a>,
41 <a class=
"citerefentry" href=
"glUseProgram.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glUseProgram
</span></span></a>,
42 <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>
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>