135 lines
6.5 KiB
XML
135 lines
6.5 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
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"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
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<refentry id="glGetObjectLabel">
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<refentryinfo>
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<copyright>
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<year>2013</year>
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<holder>Khronos Group</holder>
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</copyright>
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</refentryinfo>
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<refmeta>
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<refentrytitle>glGetObjectLabel</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glGetObjectLabel</refname>
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<refpurpose>retrieve the label of a named object identified within a namespace</refpurpose>
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</refnamediv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glGetObjectLabel</function></funcdef>
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<paramdef>GLenum <parameter>identifier</parameter></paramdef>
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<paramdef>GLuint <parameter>name</parameter></paramdef>
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<paramdef>GLsizei <parameter>bifSize</parameter></paramdef>
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<paramdef>GLsizei * <parameter>length</parameter></paramdef>
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<paramdef>char * <parameter>label</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1 id="parameters"><title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><parameter>identifier</parameter></term>
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<listitem>
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<para>
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The namespace from which the name of the object is allocated.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>name</parameter></term>
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<listitem>
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<para>
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The name of the object whose label to retrieve.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>bufSize</parameter></term>
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<listitem>
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<para>
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The length of the buffer whose address is in <parameter>label</parameter>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>length</parameter></term>
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<listitem>
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<para>
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The address of a variable to receive the length of the object label.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>label</parameter></term>
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<listitem>
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<para>
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The address of a string that will receive the object label.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id="description"><title>Description</title>
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<para>
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<function>glGetObjectLabel</function> retrieves the label of the object identified by
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<parameter>name</parameter> within the namespace given by <parameter>identifier</parameter>.
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<parameter>identifier</parameter> must be one of <constant>GL_BUFFER</constant>, <constant>GL_SHADER</constant>,
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<constant>GL_PROGRAM</constant>, <constant>GL_VERTEX_ARRAY</constant>, <constant>GL_QUERY</constant>,
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<constant>GL_PROGRAM_PIPELINE</constant>, <constant>GL_TRANSFORM_FEEDBACK</constant>, <constant>GL_SAMPLER</constant>,
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<constant>GL_TEXTURE</constant>, <constant>GL_RENDERBUFFER</constant>, <constant>GL_FRAMEBUFFER</constant>,
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to indicate the namespace containing the names of buffers, shaders, programs, vertex array objects, query objects,
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program pipelines, transform feedback objects, samplers, textures, renderbuffers and frame
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buffers, respectively.
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</para>
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<para>
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<parameter>label</parameter> is the address of a string that will be used to store the object label.
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<parameter>bufSize</parameter> specifies the number of characters in the array identified by <parameter>label</parameter>.
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<parameter>length</parameter> contains the address of a variable which will receive the the number of characters in the object label.
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If <parameter>length</parameter> is NULL, then it is ignored and no data is written. Likewise, if <parameter>label</parameter>
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is NULL, or if <parameter>bufSize</parameter> is zero then no data is written to <parameter>label</parameter>.
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</para>
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</refsect1>
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<refsect1 id="errors"><title>Errors</title>
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<para>
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<constant>GL_INVALID_ENUM</constant> is generated if <parameter>identifier</parameter>
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is not one of the accepted object types.
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</para>
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<para>
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<constant>GL_INVALID_OPERATION</constant> is generated if <parameter>name</parameter>
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is not the name of an existing object of the type specified by <parameter>identifier</parameter>.
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</para>
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<para>
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<constant>GL_INVALID_VALUE</constant> is generated if <parameter>bufSize</parameter> is
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zero.
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</para>
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<para>
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If not NULL, <parameter>length</parameter> and <parameter>label</parameter> should be addresses
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to which the client has write access, otherwise undefined behavior, including process termination
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may occur.
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</para>
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</refsect1>
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<refsect1 id="associatedgets"><title>Associated Gets</title>
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<para>
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<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_MAX_LABEL_LENGTH</constant>.
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</para>
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</refsect1>
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<refsect1 id="seealso"><title>See Also</title>
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<para>
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<citerefentry><refentrytitle>glPushDebugGroup</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glPopDebugGroup</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glObjectLabel</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glGetObjectPtrLabel</refentrytitle></citerefentry>.
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</para>
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</refsect1>
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<refsect1 id="Copyright"><title>Copyright</title>
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<para>
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Copyright <trademark class="copyright"></trademark> 2013 Khronos Group.
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This material may be distributed subject to the terms and conditions set forth in
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the Open Publication License, v 1.0, 8 June 1999.
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<ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
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</para>
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</refsect1>
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</refentry>
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