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64 lines
2.7 KiB
XML
64 lines
2.7 KiB
XML
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<!DOCTYPE refentry [ <!ENTITY % mathent SYSTEM "math.ent"> %mathent; ]>
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<!-- Converted by db4-upgrade version 1.1 -->
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<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="gl_VertexID">
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<info>
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<copyright>
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<year>2011-2014</year>
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<holder>Khronos Group</holder>
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</copyright>
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</info>
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<refmeta>
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<refentrytitle>gl_VertexID</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>gl_VertexID</refname>
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<refpurpose>contains the index of the current vertex</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<title>Declaration</title>
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<fieldsynopsis>
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<modifier>in highp</modifier>
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<type>int</type>
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<varname>gl_VertexID</varname>
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</fieldsynopsis>
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</refsynopsisdiv>
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<refsect1 xml:id="description"><title>Description</title>
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<para>
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<varname>gl_VertexID</varname> is a vertex language input variable that holds an
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integer index for the vertex. The index is impliclty generated by <function>glDrawArrays</function>
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and other commands that do not reference the content of the <constant>GL_ELEMENT_ARRAY_BUFFER</constant>, or
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explicitly generated from the content of the <constant>GL_ELEMENT_ARRAY_BUFFER</constant>
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by commands such as <function>glDrawElements</function>.
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</para>
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</refsect1>
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<refsect1 xml:id="versions"><title>Version Support</title>
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<informaltable>
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<tgroup cols="4" align="left">
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="varhead.xml" xpointer="xpointer(/*/*)"/>
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<tbody>
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<row>
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<entry>gl_VertexID</entry>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="version.xml" xpointer="xpointer(/*/*[@role='es30']/*)"/>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 xml:id="seealso"><title>See Also</title>
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<para>
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<citerefentry><refentrytitle>gl_InstanceID</refentrytitle></citerefentry>
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</para>
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</refsect1>
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<refsect1 xml:id="Copyright"><title>Copyright</title>
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<para>
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Copyright <trademark class="copyright"/> 2011-2014 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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<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://opencontent.org/openpub/">http://opencontent.org/openpub/</link>.
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</para>
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</refsect1>
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</refentry>
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