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98 lines
4.2 KiB
XML
98 lines
4.2 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="glDispatchCompute">
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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>glDispatchCompute</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glDispatchCompute</refname>
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<refpurpose>launch one or more compute work groups</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>glDispatchCompute</function></funcdef>
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<paramdef>GLuint <parameter>num_groups_x</parameter></paramdef>
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<paramdef>GLuint <parameter>num_groups_y</parameter></paramdef>
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<paramdef>GLuint <parameter>num_groups_z</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>num_groups_x</parameter></term>
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<listitem>
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<para>
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The number of work groups to be launched in the X dimension.
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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>num_groups_y</parameter></term>
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<listitem>
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<para>
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The number of work groups to be launched in the Y dimension.
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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>num_groups_z</parameter></term>
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<listitem>
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<para>
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The number of work groups to be launched in the Z dimension.
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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>glDispatchCompute</function> launches one or more compute
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work groups. Each work group is processed by the active program object for the compute
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shader stage. While the individual shader invocations within a work group are
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executed as a unit, work groups are executed completely independently and in
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unspecified order. <parameter>num_groups_x</parameter>, <parameter>num_groups_y</parameter>
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and <parameter>num_groups_z</parameter> specify the number of local
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work groups that will be dispatched in the X, Y and Z dimensions, respectively.
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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_OPERATION</constant> is generated if there is no active program
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for the compute shader stage.
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</para>
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<para>
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<constant>GL_INVALID_VALUE</constant> is generated if any of <parameter>num_groups_x</parameter>,
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<parameter>num_groups_y</parameter>, or <parameter>num_groups_z</parameter> is greater than or
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equal to the maximum work-group count for the corresponding dimension.
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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_COMPUTE_WORK_GROUP_COUNT</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>glDispatchComputeIndirect</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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