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=
"gl_WorkGroupID">
9 <holder>Khronos Group
</holder>
12 <refentrytitle>gl_WorkGroupID
</refentrytitle>
13 <manvolnum>3G
</manvolnum>
16 <refname>gl_WorkGroupID
</refname>
17 <refpurpose>contains the index of the workgroup currently being operated on by a compute shader
</refpurpose>
19 <refsynopsisdiv><title>Declaration
</title>
21 <function>in uvec3 gl_WorkGroupID
</function>
24 <refsect1 id=
"description"><title>Description
</title>
26 In the compute language,
<function>gl_WorkGroupID
</function>
27 contains the
3-dimensional index of the global work group
28 that the current compute shader invocation is executing within. The possible values range
29 across the parameters passed into
<function>glDispatchCompute
</function>, i.e., from (
0,
0,
0) to
30 (
<function>gl_NumWorkGroups.x
</function> -
1,
<function>gl_NumWorkGroups.y
</function> -
1,
<function>gl_NumWorkGroups.z
</function> -
1).
33 <refsect1 id=
"versions"><title>Version Support
</title>
34 <informaltable frame=
"topbot">
39 <entry>gl_WorkGroupID
</entry>#newin43#
45 <refsect1 id=
"seealso"><title>See Also
</title>
47 <citerefentry><refentrytitle>gl_NumWorkGroups
</refentrytitle></citerefentry>,
48 <citerefentry><refentrytitle>gl_WorkGroupID
</refentrytitle></citerefentry>,
49 <citerefentry><refentrytitle>gl_LocalInvocationID
</refentrytitle></citerefentry>
52 <refsect1 id=
"Copyright"><title>Copyright
</title>
54 Copyright
<trademark class=
"copyright"></trademark> 2011-
2012 Khronos Group.
55 This material may be distributed subject to the terms and conditions set forth in
56 the Open Publication License, v
1.0,
8 June
1999.
57 <ulink url=
"http://opencontent.org/openpub/">http://opencontent.org/openpub/
</ulink>.