upstream-doc/man3/xhtml/glIsProgram.xml

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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</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>