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| <title>clGetImageInfo</title> |
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| <meta name="keywords" content=" clGetImageInfo " /> |
| </head> |
| <body> |
| <div class="refentry"> |
| <a id="idm1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="clGetImageInfo"></a> |
| <h1> |
| clGetImageInfo |
| </h1> |
| <p> |
| Enqueues a command to map a region of a buffer object into the host address space and returns a pointer to this mapped region. |
| </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="_top">cl_int</a> * <strong class="fsfunc">clGetImageInfo</strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_mem</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="enums.html#cl_image_info" target="_top">cl_image_info</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_name</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_value_size</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">void</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value_size_ret</var><code>)</code></td> |
| </tr> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="parameters"></a> |
| <h2>Parameters</h2> |
| <div class="variablelist"> |
| <dl class="variablelist"> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| image |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Specifies the image object being queried. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| param_name |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Specifies the information to query. The list of supported <code class="varname">param_name</code> types and the |
| information returned in <code class="varname">param_value</code> by <code class="function">clGetImageInfo</code> is described in the table below. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| param_value |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A pointer to memory where the appropriate result being queried is returned. If <code class="varname">param_value</code> is NULL, it is ignored. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| param_value_size |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Used to specify the size in bytes of memory pointed to by <code class="varname">param_value</code>. |
| This size must be greater than or equal to size of return type as described in the table below. |
| </p> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| <col align="left" class="col3" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="left">cl_image_info</th> |
| <th align="left">Return Type</th> |
| <th align="left">Info. returned in <code class="varname">param_value</code></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_FORMAT</code> |
| </td> |
| <td align="left">cl_image_format</td> |
| <td align="left"> |
| Return image format descriptor specified when |
| <code class="varname">image</code> is created with <a class="citerefentry" href="clCreateImage2D.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage2D</span></span></a> or <a class="citerefentry" href="clCreateImage3D.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage3D</span></span></a>. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_ELEMENT_SIZE</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return size of each element of the image |
| memory object given by <code class="varname">image</code>. An element is |
| made up of <code class="varname">n</code> channels. The value of <code class="varname">n</code> is given |
| in <code class="varname">cl_image_format</code> descriptor. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_ROW_PITCH</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return size in bytes of a row of elements of the |
| image object given by <code class="varname">image</code>. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_SLICE_PITCH</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return size in bytes of a 2D slice for the 3D |
| image object given by <code class="varname">image</code>. For a 2D image |
| object this value will be 0. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_WIDTH</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return width of image in pixels. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_HEIGHT</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return height of image in pixels. |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <code class="constant">CL_IMAGE_DEPTH</code> |
| </td> |
| <td align="left">size_t</td> |
| <td align="left"> |
| Return depth of the image in pixels. For a 2D |
| image, depth equals 0. |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| param_value_size_ret |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| the actual size in bytes of data being queried by <code class="varname">param_value</code>. If <code class="varname">param_value_size_ret</code> is NULL, it is ignored. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| <code class="function">clGetImageInfo</code> returns <span class="errorname">CL_SUCCESS</span> if the function is executed successfully, returns <span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">param_name</code> is not valid, or if size in bytes specified by <code class="varname">param_value_size</code> is less than the size of return type as described in the table above and <code class="varname">param_value</code> is not NULL, and returns <span class="errorname">CL_INVALID_MEM_OBJECT</span> if <code class="varname">image</code> is a not a valid image object. |
| </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-1.0.pdf#page=84" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="clGetMemObjectInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetMemObjectInfo</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 © 2007-2009 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. |
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