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|  | <title>clEnqueueCopyImageToBuffer</title> | 
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|  | <div class="titlepage"></div> | 
|  | <div xmlns="" class="refnamediv"> | 
|  | <a xmlns="http://www.w3.org/1999/xhtml" id="clEnqueueCopyImageToBuffer"></a> | 
|  | <h1> | 
|  | clEnqueueCopyImageToBuffer | 
|  | </h1> | 
|  | <p> | 
|  | Enqueues a command to copy an image object to a buffer 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">cl_int</a> | 
|  | <strong class="fsfunc">clEnqueueCopyImageToBuffer</strong> | 
|  | (</code> | 
|  | <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_command_queue</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">command_queue</var>, </td> | 
|  | </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_mem</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">src_image</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_mem</a>  <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_buffer</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*src_origin</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*region</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_offset</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">cl_uint</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_events_in_wait_list</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_event</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event_wait_list</var>, </td> | 
|  | </tr> | 
|  | <tr valign="top"> | 
|  | <td> </td> | 
|  | <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_event</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event</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"> command_queue </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | Must be a valid host command-queue. The OpenCL context associated with | 
|  | <code class="varname">command_queue</code>, <code class="varname">src_image</code>, and | 
|  | <code class="varname">dst_buffer</code> must be the same. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> <code class="varname"> src_image </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | A valid image object. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> <code class="varname"> dst_buffer </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | A valid buffer object. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> <code class="varname"> src_origin </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | Defines the (x, y, z) offset in pixels in the 1D, 2D or 3D image, the (x, | 
|  | y) offset and the image index in the 2D image array or the (x) offset and | 
|  | the image index in the 1D image array.  If <code class="varname">src_image</code> | 
|  | is a 2D image object, <code class="varname">src_origin</code>[2] must be 0. | 
|  | If <code class="varname">src_image</code> is a 1D image or 1D image buffer object, | 
|  | <code class="varname">src_origin</code>[1] and <code class="varname">src_origin</code>[2] | 
|  | must be 0.  If <code class="varname">src_image</code> is a 1D image array object, | 
|  | <code class="varname">src_origin</code>[2] must be 0.  If <code class="varname">src_image</code> | 
|  | is a 1D image array object, <code class="varname">src_origin</code>[1] describes | 
|  | the image index in the 1D image array. If <code class="varname">src_image</code> | 
|  | is a 2D image array object, <code class="varname">src_origin</code>[2] describes | 
|  | the image index in the 2D image array. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> <code class="varname"> region </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | Defines the (width, height, depth) in pixels of the 1D, 2D or 3D rectangle, | 
|  | the (width, height) in pixels of the 2D rectangle and the number of images | 
|  | of a 2D image array or the (width) in pixels of the 1D rectangle and the | 
|  | number of images of a 1D image array.  If <code class="varname">src_image</code> | 
|  | is a 2D image object, <code class="varname">region</code>[2] must be 1. | 
|  | If <code class="varname">src_image</code> is a 1D image or 1D image buffer | 
|  | object, <code class="varname">region</code>[1] and <code class="varname">region</code>[2] | 
|  | must be 1.  If <code class="varname">src_image</code> is a 1D image array object, | 
|  | <code class="varname">region</code>[2] must be 1. The values in <code class="varname">region</code> cannot be 0. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> <code class="varname"> dst_offset </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | Refers to the offset where to begin copying data into | 
|  | <code class="varname">dst_buffer</code>.  The size in bytes of the region to be copied | 
|  | referred to as <code class="varname">dst_cb</code> is computed as <code class="varname">width * height * depth * bytes/image | 
|  | element</code> if <code class="varname">src_image</code> is a 3D image object, is computed | 
|  | as <code class="varname">width * height * bytes/image element</code> if <code class="varname">src_image</code> | 
|  | is a 2D image, is computed as <code class="varname">width * height * arraysize * bytes/image | 
|  | element</code> if <code class="varname">src_image</code> is a 2D image array object, is | 
|  | computed as <code class="varname">width * bytes/image element</code> if <code class="varname">src_image</code> | 
|  | is a 1D image or 1D image buffer object and is computed as <code class="varname">width * | 
|  | arraysize * bytes/image element</code> if <code class="varname">src_image</code> is a 1D | 
|  | image array object. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> | 
|  | <code class="varname"> | 
|  | event_wait_list | 
|  | ,</code> | 
|  | <code class="varname"> | 
|  | num_events_in_wait_list | 
|  | </code> | 
|  | </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | Specify events that need to complete before this particular | 
|  | command can be executed. If <code class="varname">event_wait_list</code> | 
|  | is NULL, then this particular command does not wait on any | 
|  | event to complete. If <code class="varname">event_wait_list</code> is | 
|  | NULL, <code class="varname">num_events_in_wait_list</code> must be 0. If | 
|  | <code class="varname">event_wait_list</code> is not NULL, the list of events | 
|  | pointed to by <code class="varname">event_wait_list</code> must be valid | 
|  | and <code class="varname">num_events_in_wait_list</code> must be greater | 
|  | than 0. The events specified in <code class="varname">event_wait_list</code> | 
|  | act as synchronization points. The context associated with events in | 
|  | <code class="varname">event_wait_list</code> and <code class="varname">command_queue</code> must | 
|  | be the same. The memory associated with <code class="varname">event_wait_list</code> | 
|  | can be reused or freed after the function returns. | 
|  | </p> | 
|  | </dd> | 
|  | <dt> | 
|  | <span class="term"> <code class="varname"> event </code> </span> | 
|  | </dt> | 
|  | <dd> | 
|  | <p> | 
|  | Returns an event object that identifies this particular copy command | 
|  | and can be used to query or queue a wait for this particular | 
|  | command to complete. <code class="varname">event</code> can be NULL in | 
|  | which case it will not be possible for the application to query the | 
|  | status of this command or queue a wait for this command to complete. | 
|  | <a class="citerefentry" href="clEnqueueBarrierWithWaitList.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueBarrierWithWaitList</span></span></a> | 
|  | can be used instead.  If the <code class="varname">event_wait_list</code> | 
|  | and the <code class="varname">event</code> arguments are not NULL, the | 
|  | <code class="varname">event</code> argument should not refer to an element of the | 
|  | <code class="varname">event_wait_list</code> array. | 
|  | </p> | 
|  | </dd> | 
|  | </dl> | 
|  | </div> | 
|  | </div> | 
|  | <div class="refsect1"> | 
|  | <a id="notes"></a> | 
|  | <h2></h2> | 
|  | <p> | 
|  | If the mipmap extensions are enabled with | 
|  | <a class="citerefentry" href="cl_khr_mipmap_image.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_mipmap_image</span></span></a>, | 
|  | calls to <a class="citerefentry" href="clEnqueueCopyImage.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyImage</span></span></a>, | 
|  | <code class="function">clEnqueueCopyImageToBuffer</code>, and | 
|  | <a class="citerefentry" href="clEnqueueCopyBufferToImage.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBufferToImage</span></span></a> | 
|  | can also be used to copy | 
|  | from and to a specific mip-level of a mip-mapped image. | 
|  | If <code class="varname">src_image</code> argument is a 1D image, | 
|  | <code class="varname">src_origin</code>[1] specifies the mip-level | 
|  | to use. If <code class="varname">src_image</code> argument is a | 
|  | 1D image array, <code class="varname">src_origin</code>[2] | 
|  | specifies the mip-level to use. If <code class="varname">src_image</code> | 
|  | argument is a 2D image, <code class="varname">src_origin</code>[3] | 
|  | specifies the mip-level to use. | 
|  | If <code class="varname">src_image</code> argument is a 2D image | 
|  | array or a 3D image, <code class="varname">src_origin</code>[3] | 
|  | specifies the mip-level to use. If | 
|  | <code class="varname">dst_image</code> argument is a 1D image, | 
|  | <code class="varname">dst_origin</code>[1] specifies the | 
|  | mip-level to use. If <code class="varname">dst_image</code> argument | 
|  | is a 1D image array, <code class="varname">dst_origin</code>[2] | 
|  | specifies the mip-level to use. If | 
|  | <code class="varname">dst_image</code> argument is a 2D image, | 
|  | <code class="varname">dst_origin</code>[3] specifies the | 
|  | mip-level to use. If <code class="varname">dst_image</code> | 
|  | argument is a 2D image array or a 3D image, | 
|  | <code class="varname">dst_origin</code>[3] specifies the | 
|  | mip-level to use. | 
|  | </p> | 
|  | <p> | 
|  | If the mip level specified is not a valid value, | 
|  | these functions return the error | 
|  | <span class="errorname">CL_INVALID_MIP_LEVEL</span>. | 
|  | </p> | 
|  | </div> | 
|  | <div class="refsect1"> | 
|  | <a id="errors"></a> | 
|  | <h2>Errors</h2> | 
|  | <p> | 
|  | <code class="function">clEnqueueCopyImageToBuffer</code> returns <span class="errorname">CL_SUCCESS</span> | 
|  | if the function is executed successfully. Otherwise, it returns one of the following | 
|  | errors: | 
|  | </p> | 
|  | <div class="itemizedlist"> | 
|  | <ul class="itemizedlist" style="list-style-type: disc; "> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_COMMAND_QUEUE</span> if <code class="varname">command_queue</code> | 
|  | is not a valid host command-queue. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if the context associated | 
|  | with <code class="varname">command_queue</code>, <code class="varname">src_image</code> and | 
|  | <code class="varname">dst_buffer</code> are not the same or if the context associated with | 
|  | <code class="varname">command_queue</code> and events in <code class="varname">event_wait_list</code> | 
|  | are not the same. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_MEM_OBJECT</span> if <code class="varname">src_image</code> is | 
|  | not a valid image object or <code class="varname">dst_buffer</code> is not a valid buffer | 
|  | object or if <code class="varname">src_image</code> is a 1D image buffer object created | 
|  | from <code class="varname">dst_buffer</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if the 1D, 2D, or 3D rectangular region | 
|  | specified by <code class="varname">src_origin</code> and <code class="varname">src_origin</code> + | 
|  | <code class="varname">region</code> refers to a region outside <code class="varname">src_image</code>, | 
|  | or if the region specified by <code class="varname">dst_offset</code> and | 
|  | <code class="varname">dst_offset</code> + <code class="varname">dst_cb</code> refers to a region | 
|  | outside <code class="varname">dst_buffer</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if values in <code class="varname">src_origin</code> | 
|  | and <code class="varname">region</code> do not follow rules described in the argument | 
|  | description for <code class="varname">src_origin</code> and <code class="varname">region</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_EVENT_WAIT_LIST</span> | 
|  | if <code class="varname">event_wait_list</code> is NULL and | 
|  | <code class="varname">num_events_in_wait_list</code> > 0, | 
|  | or <code class="varname">event_wait_list</code> is not NULL and | 
|  | <code class="varname">num_events_in_wait_list</code> is 0, or if event objects in | 
|  | <code class="varname">event_wait_list</code> are not valid events. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MISALIGNED_SUB_BUFFER_OFFSET</span> if | 
|  | <code class="varname">dst_buffer</code> is a sub-buffer object and <code class="varname">offset</code> | 
|  | specified when the sub-buffer object is created is not aligned to | 
|  | <code class="constant">CL_DEVICE_MEM_BASE_ADDR_ALIGN</code> value for device associated | 
|  | with <code class="varname">queue</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_IMAGE_SIZE</span> if image dimensions (image width, | 
|  | height, specified or compute row and/or slice pitch) for <code class="varname">src_image</code> | 
|  | are not supported by device associated with <code class="varname">queue</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_IMAGE_FORMAT_NOT_SUPPORTED</span> if image format (image channel | 
|  | order and data type) for <code class="varname">src_image</code> are not supported by device | 
|  | associated with <code class="varname">queue</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MEM_OBJECT_ALLOCATION_FAILURE</span> if there is a failure | 
|  | to allocate memory for data store associated with <code class="varname">src_image</code> | 
|  | or <code class="varname">dst_buffer</code>. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_OPERATION</span> if the device | 
|  | associated with <code class="varname">command_queue</code> does not | 
|  | support images (i.e. <code class="constant">CL_DEVICE_IMAGE_SUPPORT</code> | 
|  | specified in the table  of OpenCL Device Queries for | 
|  | <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a> | 
|  | is <code class="constant">CL_FALSE</code>). | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_RESOURCES</span> if there is a failure to allocate | 
|  | resources required by the OpenCL implementation on the device. | 
|  | </li> | 
|  | <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate | 
|  | resources required by the OpenCL implementation on the host. | 
|  | </li> | 
|  | </ul> | 
|  | </div> | 
|  | </div> | 
|  | <div class="refsect1"> | 
|  | <a id="specification"></a> | 
|  | <h2>Specification</h2> | 
|  | <p> | 
|  | <img src="pdficon_small1.gif" /> | 
|  |  | 
|  | <a href="https://www.khronos.org/registry/cl/specs/opencl-2.0.pdf#page=138" target="OpenCL Spec">OpenCL Specification</a> | 
|  | </p> | 
|  | </div> | 
|  | <div class="refsect1"> | 
|  | <a id="seealso"></a> | 
|  | <h2>Also see</h2> | 
|  | <p> | 
|  | <a class="citerefentry" href="clEnqueueReadBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReadBuffer</span></span></a>, | 
|  | <a class="citerefentry" href="clEnqueueWriteBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueWriteBuffer</span></span></a>, | 
|  | <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a>, | 
|  | <a class="citerefentry" href="clEnqueueCopyBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBuffer</span></span></a>, | 
|  | <a class="citerefentry" href="clEnqueueCopyBufferToImage.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBufferToImage</span></span></a>, | 
|  | <a class="citerefentry" href="cl_khr_mipmap_image.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_mipmap_image</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 © 2007-2013 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> | 
|  | </div> | 
|  | </body> | 
|  | </html> |