sdk/2.1/docs/man/imageFunctions.xml

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<!ENTITY imageFunctionsInc SYSTEM "imageFunctionsInc.xml">
]>

<refentry>
    <refentryinfo>
        <keywordset>
            <keyword>Image Read and Write Functions</keyword>
        </keywordset>
    </refentryinfo>

    <refmeta>
        <refentrytitle>Image Read, Write, and Query Functions</refentrytitle>
        <refmiscinfo>
            <copyright>
                <year>2007-2013</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>

    <refnamediv>
        <refname>Image Read and Write Functions</refname>
        <refpurpose>Built-in functions to read, write, and query image memory objects. Click an item in the table below for details about that function.</refpurpose>
    </refnamediv>

  <refsect1 id="springboard">
    <title></title>
    <informaltable frame="all">
      <tgroup cols="2" align="left" colsep="1" rowsep="1">
        <colspec colnum="1" colwidth="2*" colname="col1" />
        <colspec colnum="2" colwidth="8*" colname="col2" />

        <tbody>

<!-- 1D FUNCTIONS -->

          <row>
            <entry><citerefentry href="read_imagef1d"> <refentrytitle>read_imagef</refentrytitle></citerefentry> for 1D</entry>
            <entry>
                Do an element lookup in the 1D image object with or without a sampler,
                returning floating-point values (including optional mipmap support).
            </entry>
          </row>

          <row>
            <entry><citerefentry href="read_imagei1d"> <refentrytitle>read_image{i|ui}</refentrytitle></citerefentry> for 1D</entry>
            <entry>
                Do an element lookup in the 1D image object with or without a sampler,
                returning unnormalized signed integer and unsigned integer values (including optional mipmap support).
            </entry>
          </row>

          <row>
            <entry><citerefentry href="read_imageh1d"> <refentrytitle>read_imageh</refentrytitle></citerefentry> for 1D</entry>
            <entry>
                OPTIONAL function to do an element lookup in the 1D image object
                with or without a sampler, returning floating-point values. Enabled with
                <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>.
            </entry>
          </row>

          <row>
            <entry><citerefentry href="write_image1d"> <refentrytitle>write_image {f|i|ui|h}</refentrytitle>
            </citerefentry> for 1D
            </entry>
            <entry>
                Write <varname>color</varname> value to location in the 2D image object (including optional mipmap support).
                The <type>half</type> type is enabled with
                <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>.
            </entry>
          </row>

<!-- 2D FUNCTIONS -->

          <row>
            <entry><citerefentry href="read_imagef2d"> <refentrytitle>read_imagef</refentrytitle></citerefentry> for 2D</entry>
            <entry>
                Do an element lookup in the 2D image object with or without a sampler,
                returning floating-point values (including optional mipmap support).
            </entry>
          </row>

          <row>
            <entry><citerefentry href="read_imagei2d"> <refentrytitle>read_image{i|ui}</refentrytitle></citerefentry> for 2D
            </entry>
            <entry>
                Do an element lookup in the 2D image object with or without a sampler,
                returning unnormalized signed integer and unsigned integer values  (including optional mipmap support).
            </entry>
          </row>

          <row>
            <entry><citerefentry href="read_imageh2d"> <refentrytitle>read_imageh</refentrytitle></citerefentry> for 2D</entry>
            <entry>
                OPTIONAL function to do an element lookup in the 2D image object with
                or without a sampler, returning floating-point values. Enabled with
                <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>.
            </entry>
          </row>

          <row>
            <entry><citerefentry href="write_image2d">
                <refentrytitle>write_image {f|i|ui|h}</refentrytitle>
            </citerefentry> for 2D
            </entry>
            <entry>
                Write <varname>color</varname> value to location in the 2D image object (including optional mipmap support).
                The <type>half</type> type is enabled with
                <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>.
            </entry>
          </row>

<!-- 3D FUNCTIONS -->

          <row>
            <entry><citerefentry href="read_imagef3d">
                <refentrytitle>read_imagef</refentrytitle></citerefentry> for 3D
            </entry>
            <entry>
                Do an element lookup in the 3D image object with or without a sampler,
                returning floating-point values (including optional mipmap support).
            </entry>
          </row>

          <row>
            <entry><citerefentry href="read_imagei3d">
                <refentrytitle>read_image{i|ui}</refentrytitle></citerefentry> for 3D
            </entry>
            <entry>
                Do an element lookup in the 3D image object with or without a sampler,
                returning unnormalized signed integer and unsigned integer values (including optional mipmap support).
            </entry>
          </row>

          <row>
            <entry><citerefentry href="read_imageh3d">
                <refentrytitle>read_imageh</refentrytitle></citerefentry> for 3D
            </entry>
            <entry>
                OPTIONAL function to do an element lookup in the 3D image object with or
                without a sampler, returning floating-point values. Enabled with
                <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>.
            </entry>
          </row>

          <row>
            <entry><citerefentry href="write_image3d">
                <refentrytitle>write_image {f|i|ui|h}</refentrytitle>
            </citerefentry>  for 3D
            </entry>
            <entry>
                Write <varname>color</varname> value to location in the 2D image object (including optional mipmap support).
                The <type>half</type> type is enabled with
                <citerefentry><refentrytitle>cl_khr_fp16</refentrytitle></citerefentry>.
            </entry>
          </row>

<!--        <row>
            <entry><citerefentry href="cl_khr_3d_image_writes">
                <refentrytitle>write_image{f|i|ui}</refentrytitle></citerefentry> for 3D</entry>
            <entry>OPTIONAL function to write <varname>color</varname> value in a 3D object. Enabled with <citerefentry><refentrytitle>cl_khr_3d_image_writes</refentrytitle></citerefentry>.</entry>
        </row> -->



<!-- IMAGE QUERY FUNCTIONS -->

          <row>
            <entry><citerefentry> <refentrytitle>get_image_width</refentrytitle> </citerefentry></entry>
            <entry>Return the image width in pixels</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_height</refentrytitle> </citerefentry></entry>
            <entry>Return the image height in pixels.</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_depth</refentrytitle> </citerefentry></entry>
            <entry>Return the 3D image depth in pixels</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_channel_data_type</refentrytitle> </citerefentry></entry>
            <entry>Return the image channel data type</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_channel_order</refentrytitle> </citerefentry></entry>
            <entry>Return the image channel order</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_dim</refentrytitle> </citerefentry></entry>
            <entry>Return the image dimensions</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_array_size</refentrytitle> </citerefentry></entry>
            <entry>Return the number of images in an image array</entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_num_mip_levels</refentrytitle> </citerefentry></entry>
            <entry>Return the number of mip-levels. Enabled with extension <citerefentry><refentrytitle>cl_khr_mipmap_image</refentrytitle></citerefentry></entry>
          </row>

          <row>
            <entry><citerefentry> <refentrytitle>get_image_num_samples</refentrytitle> </citerefentry></entry>
            <entry>Return the number of samples in the 2D MSAA image. Enabled with extension <citerefentry><refentrytitle>cl_khr_gl_msaa_sharing</refentrytitle></citerefentry></entry>
          </row>

        </tbody>

      </tgroup>
    </informaltable>

  </refsect1>

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

    <refsect1 id="notes"><title>Notes</title>

        &imageFunctionsInc;

    </refsect1>

<!-- ================================ SPECIFICATION  -->
    <refsect1 id="specification"><title>Specification</title>
        <para>
            <imageobject>
                <imagedata fileref="pdficon_small1.gif" format="gif" />
            </imageobject>

            <olink uri="imageFunctions">OpenCL Specification</olink>
        </para>
    </refsect1>

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

    <refsect1 id="seealso"><title>Also see</title>
        <para>
            <citerefentry><refentrytitle>sampler_t</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>cl_khr_srgb_image_writes</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>cl_khr_mipmap_image</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>

 <!-- 28-Oct-2015, C lang ver 2.0 rev 30 -->
</refentry>