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</style>
    <title>write_image (1D)</title>
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  <body>
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      <a id="idm1"></a>
      <div class="titlepage"></div>
      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="write_image1d"></a>
        <h1>write_image1d</h1>
        <p>
            Write <code xmlns="http://www.w3.org/1999/xhtml" class="varname">color</code> value to location in a 1D image object.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imagef
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
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          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imagef
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imagef
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imagei
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imagei
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                (</code>
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                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
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                    <strong class="fsfunc">
                        write_imagei
                    </strong>
                (</code>
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                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
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                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imageui
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imageui
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imageui
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">uint4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imageh
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">half4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imageh
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">half4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">void</a>
                    <strong class="fsfunc">
                        write_imageh
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                , </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">int2</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">coord</var>
                , </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">half4</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">color</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
         <code class="function">write_imagef</code> can only be used with image objects created with
         <code class="varname">image_channel_data_type</code> set to one of the pre-defined packed formats
         or set to <code class="constant">CL_SNORM_INT8</code>, <code class="constant">CL_UNORM_INT8</code>,
         <code class="constant">CL_SNORM_INT16</code>, <code class="constant">CL_UNORM_INT16</code>,
         <code class="constant">CL_HALF_FLOAT</code>, or <code class="constant">CL_FLOAT</code>. Appropriate data
         format conversion will be done to convert channel data from a floating-point value to
         actual data format in which the channels are stored.
       </p>
        <p>
         <code class="function">write_imagei</code> functions can only be used with image objects
         created with <code class="varname">image_channel_data_type</code> set to one of the following
         values: <code class="constant">CL_SIGNED_INT8</code>, <code class="constant">CL_SIGNED_INT16</code>,
         or <code class="constant">CL_SIGNED_INT32</code>.
       </p>
        <p>
         <code class="function">write_imageui</code> functions can only be used with image objects
         created with <code class="varname">image_channel_data_type</code> set to one of the following
         values: <code class="constant">CL_UNSIGNED_INT8</code>, <code class="constant">CL_UNSIGNED_INT16</code>,
         or <code class="constant">CL_UNSIGNED_INT32</code>.
       </p>
        <p>
         The <code class="function">write_imageh</code> functions are enabled when the half type is
          supported and can only be used with image objects created with
         <code class="varname">image_channel_data_type</code> set to one of the pre-defined packed formats
         or set to <code class="constant">CL_SNORM_INT8</code>, <code class="constant">CL_UNORM_INT8</code>,
         <code class="constant">CL_SNORM_INT16</code>, <code class="constant">CL_UNORM_INT16</code> or
         <code class="constant">CL_HALF_FLOAT</code>.  Appropriate data format conversion will be done
         to convert channel data from a floating-point value to actual data format in which
         the channels are stored.
       </p>
        <h4><a id="idm217"></a>Functions that take image1d_t or image1d_buffer_t</h4>
        <p>
         The functions that take image1d_t or image1d_buffer_t write the <code class="varname">color</code>
         value to the location specified by <code class="varname">coord</code> in the 1D image or 1D image buffer
         object specified by <code class="varname">image</code>. Appropriate data format conversion to the
         specified image format is done before writing the color value. <code class="varname">coord</code> is
         considered to be unnormalized coordinates and must be in the range 0... image width - 1.
       </p>
        <p>
         for functions taking image1d_t or image1d_buffer_t, the behavior of
         <code class="function">write_imagef</code>, <code class="function">write_imagei</code>,
         <code class="function">write_imageui</code>, and <code class="function">write_imageh</code> for image
         objects created with <code class="varname">image_channel_data_type</code> values not specified in
         the description above or with coordinate values that are not in the range (0... image
         width - 1), is undefined.
       </p>
        <h4><a id="idm229"></a>Functions that take image1d_array_t</h4>
        <p>
         The functions that take image1d_array_t write the <code class="varname">color</code> value to the location specified by
         <span class="emphasis"><em>coord.x</em></span> in the 1D image identified by <span class="emphasis"><em>coord.y</em></span>
         in the 1D image array specified by <code class="varname">image</code>. Appropriate data format
         conversion to the specified image format is done before writing the color value.
         <span class="emphasis"><em>coord.x</em></span> and <span class="emphasis"><em>coord.y</em></span> are considered to be
         unnormalized coordinates and must be in the range 0 … image width - 1 and 0 …
         image number of layers - 1.
       </p>
        <p>
          For functions taking image1d_array_t, the behavior of <code class="function">write_imagef</code>,
          <code class="function">write_imagei</code> and <code class="function">write_imageui</code> for image
          objects created with <code class="varname">image_channel_data_type</code> values not specified
          in the description above or with (x, y) coordinate values that are not in the range 
          (0 … image width - 1, 0 …image number of layers - 1), respectively, is undefined.
        </p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
     The built-in functions defined in this section
    can only be used with image memory objects.  An image memory object can be accessed by
    specific function calls that read from and/or write to specific locations in the image.
  </p>
        <p>
    Image memory objects that are being read by a kernel should be declared with the <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">__read_only</span></span></a>
    qualifier. <code class="function">write_image</code> calls to image memory objects declared with the
    <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">__read_only</span></span></a>
    qualifier will generate a compilation error. Image memory objects that
    are being written to by a kernel should be declared with the <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">__write_only</span></span></a> qualifier.
    <code class="function">read_image</code> calls to image memory objects declared with the <a class="citerefentry" href="accessQualifiers.html"><span class="citerefentry"><span class="refentrytitle">__write_only</span></span></a>
    qualifier will generate a compilation error. <code class="function">read_image</code> and
    <code class="function">write_image</code> calls to the same image memory object in a kernel are
    not supported.
  </p>
        <p>
    The <code class="function">read_image</code> calls returns a four component floating-point, integer or
    unsigned integer color value. The color values returned by <code class="function">read_image</code>
    are identified as <code class="code">x, y, z, w</code> where <code class="code">x</code> refers to the red component,
    <code class="code">y</code> refers to the green component, <code class="code">z</code> refers to the blue component
    and <code class="code">w</code> refers to the alpha component.
  </p>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p>
            <img src="pdficon_small1.gif" />

            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf#page=292" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="imageFunctions.html"><span class="citerefentry"><span class="refentrytitle">Image Functions</span></span></a>
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2011 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. 
</div>
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