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1 | <?xml version="1.0" encoding="UTF-8"?> |
2 | <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN" | |
3 | "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd"> | |
4 | <refentry id="glIsProgram"> | |
5 | <refmeta> | |
6 | <refentrytitle>glIsProgram</refentrytitle> | |
7 | <manvolnum>3G</manvolnum> | |
8 | </refmeta> | |
9 | <refnamediv> | |
10 | <refname>glIsProgram</refname> | |
11 | <refpurpose>Determines if a name corresponds to a program object</refpurpose> | |
12 | </refnamediv> | |
13 | <refsynopsisdiv><title>C Specification</title> | |
14 | <funcsynopsis> | |
15 | <funcprototype> | |
16 | <funcdef>GLboolean <function>glIsProgram</function></funcdef> | |
17 | <paramdef>GLuint <parameter>program</parameter></paramdef> | |
18 | </funcprototype> | |
19 | </funcsynopsis> | |
20 | </refsynopsisdiv> | |
21 | <refsect1 id="parameters"><title>Parameters</title> | |
22 | <variablelist> | |
23 | <varlistentry> | |
24 | <term><parameter>program</parameter></term> | |
25 | <listitem> | |
26 | <para>Specifies a potential program object.</para> | |
27 | </listitem> | |
28 | </varlistentry> | |
29 | </variablelist> | |
30 | </refsect1> | |
31 | <refsect1 id="description"><title>Description</title> | |
32 | <para><function>glIsProgram</function> returns | |
33 | <constant>GL_TRUE</constant> if <parameter>program</parameter> | |
34 | is the name of a program object previously created with | |
35 | <citerefentry><refentrytitle>glCreateProgram</refentrytitle></citerefentry> | |
36 | and not yet deleted with <citerefentry><refentrytitle>glDeleteProgram</refentrytitle></citerefentry>. | |
37 | If <parameter>program</parameter> is zero or a non-zero value that | |
38 | is not the name of a program object, or if an error occurs, | |
39 | <function>glIsProgram</function> returns <constant>GL_FALSE</constant>.</para> | |
40 | </refsect1> | |
41 | <refsect1 id="notes"><title>Notes</title> | |
42 | <para>No error is generated if <parameter>program</parameter> is | |
43 | not a valid program object name.</para> | |
44 | ||
45 | <para>A program object marked for deletion with <citerefentry><refentrytitle>glDeleteProgram</refentrytitle></citerefentry> | |
46 | but still in use as part of current rendering state is still considered | |
47 | a program object and <function>glIsProgram</function> will return <constant>GL_TRUE</constant>.</para> | |
48 | </refsect1> | |
49 | <refsect1 id="associatedgets"><title>Associated Gets</title> | |
50 | <para><citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> | |
51 | with the argument <constant>GL_CURRENT_PROGRAM</constant></para> | |
52 | ||
53 | <para><citerefentry><refentrytitle>glGetActiveAttrib</refentrytitle></citerefentry> | |
54 | with arguments <parameter>program</parameter> and the index of | |
55 | an active attribute variable</para> | |
56 | ||
57 | <para><citerefentry><refentrytitle>glGetActiveUniform</refentrytitle></citerefentry> | |
58 | with arguments <parameter>program</parameter> and the index of | |
59 | an active uniform variable</para> | |
60 | ||
61 | <para><citerefentry><refentrytitle>glGetAttachedShaders</refentrytitle></citerefentry> | |
62 | with argument <parameter>program</parameter></para> | |
63 | ||
64 | <para><citerefentry><refentrytitle>glGetAttribLocation</refentrytitle></citerefentry> | |
65 | with arguments <parameter>program</parameter> and the name of an | |
66 | attribute variable</para> | |
67 | ||
68 | <para><citerefentry><refentrytitle>glGetProgram</refentrytitle></citerefentry> | |
69 | with arguments <parameter>program</parameter> and the parameter | |
70 | to be queried</para> | |
71 | ||
72 | <para><citerefentry><refentrytitle>glGetProgramInfoLog</refentrytitle></citerefentry> | |
73 | with argument <parameter>program</parameter></para> | |
74 | ||
75 | <para><citerefentry><refentrytitle>glGetUniform</refentrytitle></citerefentry> | |
76 | with arguments <parameter>program</parameter> and the location | |
77 | of a uniform variable</para> | |
78 | ||
79 | <para><citerefentry><refentrytitle>glGetUniformLocation</refentrytitle></citerefentry> | |
80 | with arguments <parameter>program</parameter> and the name of a | |
81 | uniform variable</para> | |
82 | </refsect1> | |
83 | <refsect1 id="seealso"><title>See Also</title> | |
84 | <para><citerefentry><refentrytitle>glAttachShader</refentrytitle></citerefentry>, | |
85 | <citerefentry><refentrytitle>glBindAttribLocation</refentrytitle></citerefentry>, | |
86 | <citerefentry><refentrytitle>glCreateProgram</refentrytitle></citerefentry>, | |
87 | <citerefentry><refentrytitle>glDeleteProgram</refentrytitle></citerefentry>, | |
88 | <citerefentry><refentrytitle>glDetachShader</refentrytitle></citerefentry>, | |
89 | <citerefentry><refentrytitle>glLinkProgram</refentrytitle></citerefentry>, | |
90 | <citerefentry><refentrytitle>glUniform</refentrytitle></citerefentry>, | |
91 | <citerefentry><refentrytitle>glUseProgram</refentrytitle></citerefentry>, | |
92 | <citerefentry><refentrytitle>glValidateProgram</refentrytitle></citerefentry></para> | |
93 | </refsect1> | |
94 | <refsect1 id="Copyright"><title>Copyright</title> | |
95 | <para> | |
96 | Copyright <trademark class="copyright"></trademark> 2003-2005 3Dlabs Inc. Ltd. | |
97 | This material may be distributed subject to the terms and conditions set forth in | |
98 | the Open Publication License, v 1.0, 8 June 1999. | |
99 | <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>. | |
100 | </para> | |
101 | </refsect1> | |
102 | </refentry> |