rename upstream-man-pages to upstream-doc
[clinton/guile-figl.git] / upstream-doc / manglsl / gl_PatchVerticesIn.xml
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1<?xml version="1.0" encoding="UTF-8"?>\r
2<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"\r
3 "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">\r
4<refentry id="gl_PatchVerticesIn">\r
5 <refmeta>\r
6 <refmetainfo>\r
7 <copyright>\r
8 <year>2011</year>\r
9 <holder>Khronos Group</holder>\r
10 </copyright>\r
11 </refmetainfo>\r
12 <refentrytitle>gl_PatchVerticesIn</refentrytitle>\r
13 <manvolnum>3G</manvolnum>\r
14 </refmeta>\r
15 <refnamediv>\r
16 <refname>gl_PatchVerticesIn</refname>\r
17 <refpurpose>contains the number of vertices in the current patch</refpurpose>\r
18 </refnamediv>\r
19 <refsynopsisdiv><title>Declaration</title>\r
20 <funcsynopsis>\r
21 <function>in int gl_PatchVerticesIn;</function>\r
22 </funcsynopsis>\r
23 </refsynopsisdiv>\r
24 <refsect1 id="description"><title>Description</title>\r
25 <para>\r
26 Available only in the tessellation control and evaluation languages, <function>gl_PatchVerticesIn</function>\r
27 contains the number of vertices in the input being processed by the shader. A single tessellation control or\r
28 evaluation shader can read patches of differing sizes, and so th value of <function>gl_PatchVertexIn</function>\r
29 may differ between patches.\r
30 </para>\r
31 </refsect1>\r
32 <refsect1 id="versions"><title>Version Support</title>\r
33 <informaltable frame="topbot">\r
34 #VARTABLECOLS#\r
35 <thead>\r
36 #VARTABLEHEADER#\r
37 <row>\r
38 <entry>gl_PatchVerticesIn</entry>#newin40#\r
39 </row>\r
40 </thead>\r
41 </tgroup>\r
42 </informaltable>\r
43 </refsect1>\r
44 <refsect1 id="seealso"><title>See Also</title>\r
45 <para>\r
46 <citerefentry><refentrytitle>gl_TessLevelOuter</refentrytitle></citerefentry>,\r
47 <citerefentry><refentrytitle>gl_TessLevelInner</refentrytitle></citerefentry>,\r
48 <citerefentry><refentrytitle>gl_TessCoord</refentrytitle></citerefentry>\r
49 </para>\r
50 </refsect1>\r
51 <refsect1 id="Copyright"><title>Copyright</title>\r
52 <para>\r
53 Copyright <trademark class="copyright"></trademark> 2011 Khronos Group. \r
54 This material may be distributed subject to the terms and conditions set forth in \r
55 the Open Publication License, v 1.0, 8 June 1999.\r
56 <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.\r
57 </para>\r
58 </refsect1>\r
59</refentry>\r