| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN" |
| "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd"> |
| <refentry> |
| <refentryinfo> |
| <keywordset> |
| <keyword> |
| clCreateFromGLBuffer |
| </keyword> |
| </keywordset> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle>clCreateFromGLBuffer</refentrytitle> |
| |
| <refmiscinfo> |
| <copyright> |
| <year>2007-2009</year> |
| <holder>The Khronos Group Inc. |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and/or associated documentation files (the |
| "Materials"), to deal in the Materials without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
| permit persons to whom the Materials are furnished to do so, subject to |
| the condition that this copyright notice and permission notice shall be included |
| in all copies or substantial portions of the Materials.</holder> |
| </copyright> |
| </refmiscinfo> |
| <manvolnum>2</manvolnum> |
| </refmeta> |
| |
| <!-- ================================ SYNOPSIS --> |
| |
| <refnamediv id="clCreateFromGLBuffer"> |
| <refname>clCreateFromGLBuffer</refname> |
| |
| <refpurpose> |
| Creates an OpenCL buffer object from an OpenGL buffer object. |
| </refpurpose> |
| </refnamediv> |
| |
| |
| <refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title> |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| cl_mem |
| <function> |
| clCreateFromGLBuffer |
| </function> |
| </funcdef> |
| |
| <paramdef><link xlink:href="abstractDataTypes.html">cl_context</link><parameter>context</parameter></paramdef> |
| <paramdef><link xlink:href="enums.html#cl_mem_flags">cl_mem_flags</link><parameter>flags</parameter></paramdef> |
| <paramdef>GLuint<parameter>bufobj</parameter></paramdef> |
| <paramdef><link xlink:href="scalarDataTypes.html">cl_int</link><parameter>* errcode_ret</parameter></paramdef> |
| |
| </funcprototype> |
| </funcsynopsis> |
| </refsynopsisdiv> |
| |
| |
| <!-- ================================ PARAMETERS --> |
| |
| <refsect1 id="parameters"> |
| <title>Parameters</title> |
| <variablelist> |
| |
| <varlistentry> |
| <term> |
| <varname> <!-- parameter name --> |
| context |
| </varname> |
| </term> |
| |
| <listitem> |
| <para> <!-- parameter description --> |
| A valid OpenCL context created from an OpenGL context. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| |
| <varlistentry> |
| <term> |
| <varname> <!-- parameter name --> |
| flags |
| </varname> |
| </term> |
| |
| <listitem> |
| <para> <!-- parameter description --> |
| A bit-field that is used to specify usage information. |
| Refer to the table at |
| <citerefentry><refentrytitle>clCreateBuffer</refentrytitle></citerefentry><!-- table 5.3 --> |
| for a description of <varname>flags</varname>. Only |
| CL_MEM_READ_ONLY, CL_MEM_WRITE_ONLY and CL_MEM_READ_WRITE values specified in the table at <citerefentry><refentrytitle>clCreateBuffer</refentrytitle></citerefentry> <!-- table 5.3 --> |
| can be used. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| |
| <varlistentry> |
| <term> |
| <varname> <!-- parameter name --> |
| bufobj |
| </varname> |
| </term> |
| |
| <listitem> |
| <para> <!-- parameter description --> |
| The name of a GL buffer object. The data store of the GL buffer object must have have been previously created by calling OpenGL function <function>glBufferData</function>, although its contents need not be initialized. The size of the data store will be used to determine the size of the CL buffer object. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| |
| <varlistentry> |
| <term> |
| <varname> <!-- parameter name --> |
| errcode_ret |
| </varname> |
| </term> |
| |
| <listitem> |
| <para> <!-- parameter description --> |
| Returns an appropriate error code as described below. If <varname>errcode_ret</varname> is NULL, no error code is returned. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| |
| </variablelist> |
| </refsect1> |
| |
| |
| <!-- ================================ DESCRIPTION --> |
| |
| <refsect1 id="description"><title>Description</title> |
| <para> |
| The size of the GL buffer object data store at the time <function>clCreateFromGLBuffer</function> is called will be used as the size of buffer object returned by <function>clCreateFromGLBuffer</function>. If the state of a GL buffer object is modified through the GL API (e.g. <function>glBufferData</function>) while there exists a corresponding CL buffer object, subsequent use of the CL buffer object will result in undefined behavior. |
| </para> |
| |
| <para> |
| The <citerefentry><refentrytitle>clRetainMemObject</refentrytitle></citerefentry> and <citerefentry><refentrytitle>clReleaseMemObject</refentrytitle></citerefentry> functions can be used to retain and release |
| the buffer object. |
| </para> |
| </refsect1> |
| |
| |
| <!-- ================================ ERRORS --> |
| |
| <refsect1 id="errors"><title>Errors</title> |
| <para> |
| Returns a valid non-zero OpenCL buffer object and <varname>errcode_ret</varname> is set |
| to CL_SUCCESS if the buffer object is created successfully. Otherwise, it returns a NULL value |
| with one of the following error values returned in <varname>errcode_ret</varname>: |
| </para> |
| |
| <itemizedlist mark="disc"> |
| <listitem> |
| <errorname>CL_INVALID_CONTEXT</errorname> if <varname>context</varname> is not a valid context or was not created from a GL context. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if values specified in <varname>flags</varname> are not valid. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_GL_OBJECT</errorname> if <varname>bufobj</varname> is not a GL buffer object or is a GL buffer object but does not have an existing data store. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate resources required by the OpenCL implementation on the host. |
| </listitem> |
| |
| </itemizedlist> |
| </refsect1> |
| |
| |
| <!-- ================================ EXAMPLE --> |
| <!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE --> |
| <!-- |
| <refsect2 id="example1"> |
| <title> |
| Example |
| </title> |
| |
| <informaltable frame="none"> |
| <tgroup cols="1" align="left" colsep="0" rowsep="0"> |
| <colspec colname="col1" colnum="1" /> |
| <tbody> |
| <row> |
| <entry> |
| Example goes here - it will be set in "code" type with white space preserved. |
| </entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </refsect2> |
| --> |
| |
| |
| <!-- ================================ SPECIFICATION --> |
| <!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page |
| --> |
| <refsect1 id="specification"><title>Specification</title> |
| <para> |
| <imageobject> |
| <imagedata fileref="pdficon_small1.gif" format="gif" /> |
| </imageobject> |
| |
| <olink uri="clCreateFromGLBuffer">OpenCL Specification</olink> |
| </para> |
| </refsect1> |
| |
| |
| <!-- ================================ ALSO SEE --> |
| |
| <refsect1 id="seealso"><title>Also see</title> |
| <para> |
| <citerefentry><refentrytitle>clCreateBuffer</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>clReleaseMemObject</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>clRetainMemObject</refentrytitle></citerefentry> |
| </para> |
| </refsect1> |
| |
| |
| |
| <!-- ============================== COPYRIGHT --> |
| <!-- Content included from copyright.inc.xsl --> |
| |
| <refsect3 id="Copyright"><title></title> |
| <imageobject> |
| <imagedata fileref="KhronosLogo.jpg" format="jpg" /> |
| </imageobject> |
| <para /> |
| </refsect3> |
| |
| </refentry> |
| |