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| <title>clEnqueueAcquireEGLObjectsKHR</title> |
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| <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="clEnqueueAcquireEGLObjectsKHR"></a> |
| <h1>clEnqueueAcquireEGLObjectsKHR</h1> |
| <p> |
| Acquire OpenCL memory objects that have been created from EGL resources. |
| </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"> |
| clEnqueueAcquireEGLObjectsKHR |
| </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="scalarDataTypes.html" target="pagedisplay">cl_uint</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_objects</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_mem</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*mem_objects</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>A valid command-queue.</p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">num_objects</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| The number of memory objects to be acquired in <code class="varname">mem_objects</code>. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">mem_objects</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A pointer to a list of OpenCL memory objects |
| that were created from EGL |
| resources, within the context associate with |
| <code class="varname">command_queue</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. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">event</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Returns an event object that identifies |
| this command and can be used to query or queue a wait for the 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. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| This function is used to acquire OpenCL memory objects |
| that have been created from EGL resources. The |
| EGL objects are acquired by the OpenCL context |
| associated with <code class="varname">command_queue</code> and can |
| therefore be used by all command-queues |
| associated with the OpenCL context. |
| </p> |
| <p> |
| OpenCL memory objects created from EGL resources |
| must be acquired before they can be used |
| by any OpenCL commands queued to a command-queue. |
| If an OpenCL memory object created |
| from a EGL resource is used while it is not |
| currently acquired by OpenCL, the call attempting to |
| use that OpenCL memory object will return |
| <span class="errorname">CL_EGL_RESOURCE_NOT_ACQUIRED_KHR</span>. |
| </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. If |
| <code class="varname">num_objects</code> is 0 and <code class="varname">mem_objects</code> is NULL the |
| function does nothing and returns <span class="errorname">CL_SUCCESS</span>. 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_VALUE</span> if <code class="varname">num_objects</code> |
| is zero and <code class="varname">mem_objects</code> is not a NULL value or if |
| <code class="varname">num_objects</code> > 0 and <code class="varname">mem_objects</code> is NULL. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_MEM_OBJECT</span> if memory objects in |
| <code class="varname">mem_objects</code> are not valid OpenCL memory objects |
| in the context associated with <code class="varname">command_queue</code>. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_EGL_OBJECT_KHR</span> if memory objects in |
| <code class="varname">mem_objects</code> have not been |
| created from EGL resources. |
| </li> |
| <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 command-queue. |
| </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_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-extensions.pdf#page=169" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="cl_khr_egl_image.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_egl_image</span></span></a>, |
| <a class="citerefentry" href="cl_khr_egl_event.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_egl_event</span></span></a>, |
| <a class="citerefentry" href="clEnqueueReleaseEGLObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReleaseEGLObjectsKHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromEGLImageKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromEGLImageKHR</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. |
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