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| <title>clEnqueueCopyBufferRect</title> |
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| <meta name="keywords" content="clEnqueueCopyBufferRect" /> |
| </head> |
| <body> |
| <div class="refentry"> |
| <a id="id-1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="clEnqueueCopyBufferRect"></a> |
| <h1> |
| clEnqueueCopyBufferRect |
| </h1> |
| <p> |
| Enqueues a command to copy a 2D or 3D rectangular region from a buffer object to another 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">clEnqueueCopyBufferRect </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_buffer</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">*dst_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">src_row_pitch</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">src_slice_pitch</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_row_pitch</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_slice_pitch</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> |
| The host command-queue in which the copy command will be queued. The |
| OpenCL context associated with <code class="varname">command_queue</code>, |
| <code class="varname">src_buffer</code>, and <code class="varname">dst_buffer</code> must be |
| the same. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| src_origin |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| The (<span class="emphasis"><em>x, y, z</em></span>) offset in the memory region associated |
| with <code class="varname">src_buffer</code>. For a 2D rectangle region, the |
| <code class="varname">z</code> value given by <code class="varname">src_origin</code>[2] should |
| be 0. The offset in bytes is computed as <code class="varname">src_origin</code>[2] |
| * <code class="varname">src_slice_pitch</code> + <code class="varname">src_origin</code>[1] |
| * <code class="varname">src_row_pitch</code> + <code class="varname">src_origin</code>[0]. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname"> dst_origin </code> </span> |
| </dt> |
| <dd> |
| <p> |
| The (<span class="emphasis"><em>x, y, z</em></span>) offset in the memory region associated |
| with <code class="varname">dst_buffer</code>. For a 2D rectangle region, the |
| <code class="varname">z</code> value given by <code class="varname">dst_origin</code>[2] should |
| be 0. The offset in bytes is computed as <code class="varname">dst_origin</code>[2] |
| * <code class="varname">dst_slice_pitch</code> + <code class="varname">dst_origin</code>[1] |
| * <code class="varname">dst_row_pitch</code> + <code class="varname">dst_origin</code>[0]. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname">region</code> </span> |
| </dt> |
| <dd> |
| <p> |
| The (<code class="varname">width</code> in bytes, <code class="varname">height</code> in rows, |
| <code class="varname">depth</code> in slices) in bytes of the 2D or 3D |
| rectangle being copied. For a 2D rectangle, the <code class="varname">depth</code> |
| value given by <code class="varname">region</code>[2] should be 1. The values in |
| <code class="varname">region</code> cannot be 0. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname">src_row_pitch</code> </span> |
| </dt> |
| <dd> |
| <p> |
| The length of each row in bytes to be used for the memory region associated |
| with <code class="varname">src_buffer</code>. If <code class="varname">src_row_pitch</code> is 0, |
| <code class="varname">src_row_pitch</code> is computed as <code class="varname">region</code>[0]. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname">src_slice_pitch</code> </span> |
| </dt> |
| <dd> |
| <p> |
| The length of each 2D slice in bytes to be used for the |
| memory region associated with <code class="varname">src_buffer</code>. If |
| <code class="varname">src_slice_pitch</code> is 0, <code class="varname">src_slice_pitch</code> |
| is computed as <code class="varname">region</code>[1] * |
| <code class="varname">src_row_pitch</code>. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname">dst_row_pitch</code> </span> |
| </dt> |
| <dd> |
| <p> |
| The length of each row in bytes to be used for the memory region associated |
| with <code class="varname">dst_buffer</code>. If <code class="varname">dst_row_pitch</code> is 0, |
| <code class="varname">dst_row_pitch</code> is computed as <code class="varname">region</code>[0]. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> <code class="varname">dst_slice_pitch</code> </span> |
| </dt> |
| <dd> |
| <p> |
| The length of each 2D slice in bytes to be used for the |
| memory region associated with <code class="varname">dst_buffer</code>. If |
| <code class="varname">dst_slice_pitch</code> is 0, <code class="varname">dst_slice_pitch</code> |
| is computed as <code class="varname">region</code>[1] * |
| <code class="varname">dst_row_pitch</code>. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| event_wait_list |
| </code> |
| , </span> |
| <span class="term"> |
| <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>Notes</h2> |
| <p> |
| <code class="function">clEnqueueCopyBufferRect</code> enqueues a command to copy a 2D or 3D |
| rectangular region from the buffer object identified by <code class="varname">src_buffer</code> |
| to a 2D or 3D region in the buffer object identified by <code class="varname">dst_buffer</code>. |
| Copying begins at the source offset and destination offset which are computed |
| as described in the description for <code class="varname">src_origin</code> and |
| <code class="varname">dst_origin</code>. |
| </p> |
| <p> |
| Each byte of the region's width is copied from the source offset to the destination |
| offset. After copying each width, the source and destination offsets are incremented by |
| their respective source and destination row pitches. After copying each 2D rectangle, |
| the source and destination offsets are incremented by their respective source and |
| destination slice pitches. |
| </p> |
| <p> |
| NOTE: If <code class="varname">src_buffer</code> and <code class="varname">dst_buffer</code> |
| are the same buffer object, <code class="varname">src_row_pitch</code> must equal |
| <code class="varname">dst_row_pitch</code> and <code class="varname">src_slice_pitch</code> must equal |
| <code class="varname">dst_slice_pitch</code>. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| 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_buffer</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_buffer</code> |
| and <code class="varname">dst_buffer</code> are not valid buffer objects. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if (<code class="varname">src_origin</code>, |
| <code class="varname">region</code>, <code class="varname">src_row_pitch</code>, <code class="varname">src_slice_pitch</code>) or |
| (<code class="varname">dst_origin</code>, <code class="varname">region</code>, <code class="varname">dst_row_pitch</code>, |
| <code class="varname">dst_slice_pitch</code>) require accessing elements outside the |
| <code class="varname">src_buffer</code> and <code class="varname">dst_buffer</code> objects respectively. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if any <code class="varname">region</code> array |
| element is 0. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">src_row_pitch</code> |
| is not 0 and is less than <code class="varname">region</code>[0]. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">dst_row_pitch</code> |
| is not 0 and is less than <code class="varname">region</code>[0]. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">src_slice_pitch</code> is not |
| 0 and is less than <code class="varname">region</code>[1] * <code class="varname">src_row_pitch</code> |
| or if <code class="varname">src_slice_pitch</code> is not 0 and is not a multiple of |
| <code class="varname">src_row_pitch</code>. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">dst_slice_pitch</code> is not |
| 0 and is less than <code class="varname">region</code>[1] * <code class="varname">dst_row_pitch</code> |
| or if <code class="varname">dst_slice_pitch</code> is not 0 and is not a multiple of |
| <code class="varname">dst_row_pitch</code>. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">src_buffer</code> |
| and <code class="varname">dst_buffer</code> are the same buffer |
| object and <code class="varname">src_slice_pitch</code> is not equal to |
| <code class="varname">dst_slice_pitch</code> and <code class="varname">src_row_pitch</code> is not |
| equal to <code class="varname">dst_row_pitch</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> is > |
| 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_MEM_COPY_OVERLAP</span> if <code class="varname">src_buffer</code> |
| and <code class="varname">dst_buffer</code> are the same buffer or sub-buffer object and the source |
| and destination regions overlap or if <code class="varname">src_buffer</code> and |
| <code class="varname">dst_buffer</code> are different sub-buffers of the same associated |
| buffer object and they overlap. Refer to Appendix D in the OpenCL specification |
| for details on how to determine if source and destination regions overlap. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MISALIGNED_SUB_BUFFER_OFFSET </span> if |
| <code class="varname">src_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_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_MEM_OBJECT_ALLOCATION_FAILURE</span> if there is a failure |
| to allocate memory for data store associated with <code class="varname">src_buffer</code> |
| or <code class="varname">dst_buffer</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-2.1.pdf#page=119" 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="clEnqueueReadBufferRect.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReadBufferRect</span></span></a>, |
| <a class="citerefentry" href="clEnqueueWriteBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueWriteBuffer</span></span></a>, |
| <a class="citerefentry" href="clEnqueueWriteBufferRect.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueWriteBufferRect</span></span></a>, |
| <a class="citerefentry" href="clEnqueueCopyBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBuffer</span></span></a>, |
| <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a>, |
| <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>, |
| <a class="citerefentry" href="clEnqueueCopyBufferToImage.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBufferToImage</span></span></a>, |
| <a class="citerefentry" href="clEnqueueCopyImageToBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyImageToBuffer</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 © 2007-2015 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> |
