sdk/1.1/docs/man/clGetSupportedImageFormats.xml

<?xml version="1.0" encoding="UTF-8"?>
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<refentry>
    <refentryinfo>
        <keywordset>
            <keyword>         
                clGetSupportedImageFormats
            </keyword>
        </keywordset>
    </refentryinfo>

    <refmeta>
        <refentrytitle>       
            clGetSupportedImageFormats
        </refentrytitle>

        <refmiscinfo>
            <copyright>
                <year>2007-2010</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>3</manvolnum>
  
    </refmeta>


<!-- ================================ SYNOPSIS -->  

    <refnamediv id="clGetSupportedImageFormats">
        <refname>     
            clGetSupportedImageFormats
        </refname> 

        <refpurpose>          
            Get the list of image formats supported by an OpenCL implementation.
        </refpurpose> 
    </refnamediv> 

    <refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>
                    <link xlink:href="scalarDataTypes.html">cl_int</link>
 <function>clGetSupportedImageFormats</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><link xlink:href="enums.html#cl_mem_object_type">cl_mem_object_type</link><parameter>image_type</parameter></paramdef>
                <paramdef><link xlink:href="scalarDataTypes.html">cl_uint</link><parameter>num_entries</parameter></paramdef>
                <paramdef><link xlink:href="cl_image_format.html">cl_image_format</link><parameter>*image_formats</parameter></paramdef>
                <paramdef><link xlink:href="scalarDataTypes.html">cl_uint</link><parameter>*num_image_formats</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 on which the image object(s) will be created.
                    </para>
               </listitem>
            </varlistentry>

            <varlistentry>
                <term>
                    <varname> <!-- parameter name -->
                        flags
                    </varname>
                </term>

                <listitem>
                    <para> <!-- parameter description -->
                        A bit-field that is used to specify allocation and usage information about the image
                        memory object being created and is described in the List of supported <type>cl_mem_flags</type> values for <citerefentry><refentrytitle>clCreateBuffer</refentrytitle></citerefentry>
                    </para>
               </listitem>
            </varlistentry>
            
            <varlistentry>
                <term>
                    <varname>
                        image_type
                    </varname>
                </term>

                <listitem>
                    <para> 
                        Describes the image type and must be either <constant>CL_MEM_OBJECT_IMAGE2D</constant> or
                        <constant>CL_MEM_OBJECT_IMAGE3D</constant>.
                    </para>
               </listitem>
            </varlistentry>
            
            <varlistentry>
                <term>
                    <varname>
                        num_entries
                    </varname>
                </term>

                <listitem>
                    <para> 
                        Specifies the number of entries that can be returned in the memory location given by
                        <varname>image_formats</varname>.
                    </para>
                </listitem>
            </varlistentry>           
            
            <varlistentry>
                <term>
                    <varname>
                        image_formats
                    </varname>
                </term>

                <listitem>
                    <para> 
                        A pointer to a memory location where the list of supported image formats are
                        returned. Each entry describes a <citerefentry><refentrytitle>cl_image_format</refentrytitle></citerefentry> structure supported 
                        by the OpenCL implementation. If <varname>image_formats</varname> is NULL, it is ignored.
                    </para>
                </listitem>
            </varlistentry>
            
            <varlistentry>
                <term>
                    <varname>
                        num_image_formats
                    </varname>
                </term>

                <listitem> 
                    <para>
                        The actual number of supported image formats for a specific <varname>context</varname> and
                        values specified by <varname>flags</varname>. If <varname>num_image_formats</varname> is NULL, it is ignored.              
                    </para>
                </listitem> 
            </varlistentry>

        


        </variablelist>
    </refsect1>

    
<!-- ================================ NOTES  -->        
 

    <refsect1 id="notes"><title>Notes</title>
        <para>
            <function>clGetSupportedImageFormats</function> can be used to get the list of image formats supported by an OpenCL 
            implementation when the following information about an image memory object is specified: 
        </para>

        <itemizedlist mark="disc">
            <listitem>
                Context
            </listitem>
            
            <listitem>
                Image type - 2D or 3D image
            </listitem>
            
            <listitem>
                Image object allocation information
            </listitem>
        </itemizedlist>
        
        <para>
The minimum list of supported image formats is given by the table below:
</para>
        <informaltable frame="all">
            <tgroup cols="3" align="left" colsep="1" rowsep="1">
                <colspec colname="col1" colnum="1" />
                <colspec colname="col2" colnum="2" />
                <colspec colname="col3" colnum="3" />

                <thead>
                    <row>
                        <entry><literallayout>image_num_channels</literallayout></entry>
                        <entry><literallayout>image_channel_order</literallayout></entry>
                        <entry><literallayout>image_channel_data_type</literallayout></entry>
                    </row>
                </thead>

                <tbody>

                    <row>
                        <entry>
                            <literallayout>4</literallayout>
                        </entry>

                        <entry>
                            <literallayout>CL_RGBA</literallayout>
                        </entry>

                        <entry><literallayout>CL_UNORM_INT8
CL_UNORM_INT16

CL_SIGNED_INT8
CL_SIGNED_INT16
CL_SIGNED_INT32

CL_UNSIGNED_INT8
CL_UNSIGNED_INT16
CL_UNSIGNED_INT32

CL_HALF_FLOAT
CL_FLOAT
</literallayout>
                        </entry>
                    </row>

                    <row>
                        <entry><literallayout>4</literallayout>
                        </entry>

                        <entry><literallayout>CL_BGRA</literallayout>
                        </entry>

                        <entry><literallayout>CL_UNORM_INT8</literallayout>
                        </entry>
                    </row>

                </tbody>
            </tgroup>
        </informaltable>
        <para>
If CL_DEVICE_IMAGE_SUPPORT specified in the table of OpenCL Device Queries for <citerefentry><refentrytitle>clGetDeviceInfo</refentrytitle></citerefentry> is CL_TRUE, the values assigned to the following constants by the implementation must be greater than or equal to the minimum values specified in the table of OpenCL Device Queries for <citerefentry><refentrytitle>clGetDeviceInfo</refentrytitle></citerefentry>:
CL_DEVICE_MAX_READ_IMAGE_ARGS, CL_DEVICE_MAX_WRITE_IMAGE_ARGS,
CL_DEVICE_IMAGE2D_MAX_WIDTH, CL_DEVICE_IMAGE2D_MAX_HEIGHT,
CL_DEVICE_IMAGE3D_MAX_WIDTH, CL_DEVICE_IMAGE3D_MAX_HEIGHT,
CL_DEVICE_IMAGE3D_MAX_DEPTH, CL_DEVICE_MAX_SAMPLERS.
</para>
    </refsect1>
    

<!-- ================================ ERRORS  -->       


     <refsect1 id="errors"><title>Errors</title>
        <para>
            Returns <errorname>CL_SUCCESS</errorname> if the function is executed 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.
            </listitem>
            <listitem>
                <errorname>CL_INVALID_VALUE</errorname> if <varname>flags</varname> or <varname>image_type</varname> are not valid, or 
                if <varname>num_entries</varname> is 0 and <varname>image_formats</varname> is not NULL.
            </listitem>
            <listitem>
                <errorname>CL_OUT_OF_RESOURCES</errorname> if there is a failure to allocate resources required by 
                the OpenCL implementation on the device.
            </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 -->
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    <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  -->        
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    <refsect1 id="specification"><title>Specification</title>
        <para>
            <imageobject>
                <imagedata fileref="pdficon_small1.gif" format="gif" />
            </imageobject>
            
                      
            <olink uri="clGetSupportedImageFormats">OpenCL Specification</olink>
        </para>
    </refsect1>     


<!-- ================================ ALSO SEE  -->     
   

    <refsect1 id="seealso"><title>Also see</title>
        <para>
            <citerefentry><refentrytitle>cl_image_format</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>