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130 lines
6.2 KiB
XML
130 lines
6.2 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="glGetSync">
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<refentryinfo>
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<copyright>
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<year>2010-2013</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>glGetSynciv</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glGetSynciv</refname>
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<refpurpose>query the properties of a sync object</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>glGetSynciv</function></funcdef>
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<paramdef>GLsync <parameter>sync</parameter></paramdef>
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<paramdef>GLenum <parameter>pname</parameter></paramdef>
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<paramdef>GLsizei <parameter>bufSize</parameter></paramdef>
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<paramdef>GLsizei *<parameter>length</parameter></paramdef>
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<paramdef>GLint *<parameter>values</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>sync</parameter></term>
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<listitem>
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<para>
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Specifies the sync object whose properties to query.
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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>pname</parameter></term>
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<listitem>
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<para>
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Specifies the parameter whose value to retrieve from the sync object specified in <parameter>sync</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>bufSize</parameter></term>
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<listitem>
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<para>
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Specifies the size of the buffer whose address is given in <parameter>values</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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Specifies the address of an variable to receive the number of integers placed in <parameter>values</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>values</parameter></term>
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<listitem>
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<para>
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Specifies the address of an array to receive the values of the queried parameter.
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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>glGetSynciv</function> retrieves properties of a sync object. <parameter>sync</parameter> specifies the name of the sync
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object whose properties to retrieve.
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</para>
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<para>
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On success, <function>glGetSynciv</function> replaces up to <parameter>bufSize</parameter> integers in <parameter>values</parameter> with the
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corresponding property values of the object being queried. The actual number of integers replaced is returned in the variable whose address is
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specified in <parameter>length</parameter>. If <parameter>length</parameter> is <code>NULL</code>, no length is returned.
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</para>
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<para>
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If <parameter>pname</parameter> is <constant>GL_OBJECT_TYPE</constant>, a single value representing the specific type of the sync object is
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placed in <parameter>values</parameter>. The only type supported is <constant>GL_SYNC_FENCE</constant>.
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</para>
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<para>
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If <parameter>pname</parameter> is <constant>GL_SYNC_STATUS</constant>, a single value representing the status of the sync object
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(<constant>GL_SIGNALED</constant> or <constant>GL_UNSIGNALED</constant>) is placed in <parameter>values</parameter>.
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</para>
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<para>
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If <parameter>pname</parameter> is <constant>GL_SYNC_CONDITION</constant>, a single value representing the condition of the sync object
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is placed in <parameter>values</parameter>. The only condition supported is <constant>GL_SYNC_GPU_COMMANDS_COMPLETE</constant>.
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</para>
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<para>
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If <parameter>pname</parameter> is <constant>GL_SYNC_FLAGS</constant>, a single value representing the flags with which the sync object
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was created is placed in <parameter>values</parameter>. No flags are currently supported<footnote><para><parameter>flags</parameter> is
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expected to be used in future extensions to the sync objects.</para></footnote>.
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</para>
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<para>
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If an error occurs, nothing will be written to <parameter>values</parameter> or <parameter>length</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_VALUE</constant> is generated if <parameter>sync</parameter> is not the name of a sync object.
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</para>
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<para>
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<constant>GL_INVALID_ENUM</constant> is generated if <parameter>pname</parameter> is not one of the accepted tokens.
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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>glFenceSync</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glWaitSync</refentrytitle></citerefentry>,
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<citerefentry><refentrytitle>glClientWaitSync</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> 2010-2013 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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