| 1 | <?xml version="1.0" encoding="UTF-8"?> |
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| 4 | <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glIsProgram - OpenGL 4 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></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"><p><code class="funcdef">GLboolean <b class="fsfunc">glIsProgram</b>(</code>GLuint <var class="pdparam">program</var><code>)</code>;</p></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 |
| 5 | <code class="constant">GL_TRUE</code> if <em class="parameter"><code>program</code></em> |
| 6 | is the name of a program object previously created with |
| 7 | <a href="glCreateProgram.xml"><span class="citerefentry"><span class="refentrytitle">glCreateProgram</span></span></a> |
| 8 | and not yet deleted with <a href="glDeleteProgram.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteProgram</span></span></a>. |
| 9 | If <em class="parameter"><code>program</code></em> is zero or a non-zero value that |
| 10 | is not the name of a program object, or if an error occurs, |
| 11 | <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>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 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="associatedgets"></a><h2>Associated Gets</h2><p><a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> |
| 15 | with the argument <code class="constant">GL_CURRENT_PROGRAM</code></p><p><a href="glGetActiveAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveAttrib</span></span></a> |
| 16 | with arguments <em class="parameter"><code>program</code></em> and the index of |
| 17 | an active attribute variable</p><p><a href="glGetActiveUniform.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveUniform</span></span></a> |
| 18 | with arguments <em class="parameter"><code>program</code></em> and the index of |
| 19 | an active uniform variable</p><p><a href="glGetAttachedShaders.xml"><span class="citerefentry"><span class="refentrytitle">glGetAttachedShaders</span></span></a> |
| 20 | with argument <em class="parameter"><code>program</code></em></p><p><a href="glGetAttribLocation.xml"><span class="citerefentry"><span class="refentrytitle">glGetAttribLocation</span></span></a> |
| 21 | with arguments <em class="parameter"><code>program</code></em> and the name of an |
| 22 | attribute variable</p><p><a href="glGetProgram.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgram</span></span></a> |
| 23 | with arguments <em class="parameter"><code>program</code></em> and the parameter |
| 24 | to be queried</p><p><a href="glGetProgramInfoLog.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgramInfoLog</span></span></a> |
| 25 | with argument <em class="parameter"><code>program</code></em></p><p><a href="glGetUniform.xml"><span class="citerefentry"><span class="refentrytitle">glGetUniform</span></span></a> |
| 26 | with arguments <em class="parameter"><code>program</code></em> and the location |
| 27 | of a uniform variable</p><p><a href="glGetUniformLocation.xml"><span class="citerefentry"><span class="refentrytitle">glGetUniformLocation</span></span></a> |
| 28 | with arguments <em class="parameter"><code>program</code></em> and the name of a |
| 29 | uniform variable</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p><a href="glAttachShader.xml"><span class="citerefentry"><span class="refentrytitle">glAttachShader</span></span></a>, |
| 30 | <a href="glBindAttribLocation.xml"><span class="citerefentry"><span class="refentrytitle">glBindAttribLocation</span></span></a>, |
| 31 | <a href="glCreateProgram.xml"><span class="citerefentry"><span class="refentrytitle">glCreateProgram</span></span></a>, |
| 32 | <a href="glDeleteProgram.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteProgram</span></span></a>, |
| 33 | <a href="glDetachShader.xml"><span class="citerefentry"><span class="refentrytitle">glDetachShader</span></span></a>, |
| 34 | <a href="glLinkProgram.xml"><span class="citerefentry"><span class="refentrytitle">glLinkProgram</span></span></a>, |
| 35 | <a href="glUniform.xml"><span class="citerefentry"><span class="refentrytitle">glUniform</span></span></a>, |
| 36 | <a href="glUseProgram.xml"><span class="citerefentry"><span class="refentrytitle">glUseProgram</span></span></a>, |
| 37 | <a 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> |
| 38 | Copyright <span class="trademark"></span>© 2003-2005 3Dlabs Inc. Ltd. |
| 39 | This material may be distributed subject to the terms and conditions set forth in |
| 40 | the Open Publication License, v 1.0, 8 June 1999. |
| 41 | <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>. |
| 42 | </p></div></div></body></html> |