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| <title>clCreateEventFromGLsyncKHR</title> |
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| <body> |
| <div class="refentry"> |
| <a id="idp332432"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="clCreateFromGLBuffer"></a> |
| <h1>clCreateEventFromGLsyncKHR</h1> |
| <p> |
| Creates an event object linked to an OpenGL sync 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="abstractDataTypes.html" target="_top">cl_event</a> |
| <strong class="fsfunc"> |
| clCreateEventFromGLsyncKHR |
| </strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_context</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">context</var>, </td> |
| </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td>GLsync <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">sync</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">cl_int</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*errcode_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"> |
| context |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A valid OpenCL context created from an OpenGL context or share group, using the |
| <a class="citerefentry" href="gl_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_gl_sharing</span></span></a> extension. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| sync |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| The name of a sync object in the GL share group associated with <code class="varname">context</code>. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| errcode_ret |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Returns an appropriate error code as described below. If <code class="varname">errcode_ret</code> is |
| NULL, no error code is returned. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| An event object may be created by linking to an OpenGL sync object. Completion of such an event |
| object is equivalent to waiting for completion of the fence command associated with the linked |
| GL sync object. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="notes"></a> |
| <h2>Notes</h2> |
| <p> |
| The parameters of an event object linked to a GL sync object will return the following |
| values when queried with <a class="citerefentry" href="clGetEventInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetEventInfo</span></span></a>: |
| </p> |
| <div class="itemizedlist"> |
| <ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem" style="list-style-type: disc"> |
| The CL_EVENT_COMMAND_QUEUE of a linked event is NULL, because the event is not |
| associated with any OpenCL command queue. |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| The CL_EVENT_COMMAND_TYPE of a linked event is CL_COMMAND_GL_FENCE_SYNC_OBJECT_KHR, |
| indicating that the event is associated with a GL sync object, rather than an OpenCL |
| command. |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| The CL_EVENT_COMMAND_EXECUTION_STATUS of a linked event is either CL_SUBMITTED, |
| indicating that the fence command associated with the sync object has not yet completed, |
| or CL_COMPLETE, indicating that the fence command has completed. |
| </li> |
| </ul> |
| </div> |
| <p> |
| <code class="function">clCreateEventFromGLsyncKHR</code> performs an implicit |
| <a class="citerefentry" href="clRetainEvent.html"><span class="citerefentry"><span class="refentrytitle">clRetainEvent</span></span></a> on the returned |
| event object. Creating a linked event object also places a reference on the linked GL sync |
| object. When the event object is deleted, the reference will be removed from the GL sync object. |
| </p> |
| <p> |
| Events returned from <code class="function">clCreateEventFromGLsyncKHR</code> may only be consumed by |
| <a class="citerefentry" href="clEnqueueAcquireGLObjects.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueAcquireGLObjects</span></span></a>. Passing |
| such events to any other CL API will generate a CL_INVALID_EVENT error. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| Returns a valid OpenCL event object and <code class="varname">errcode_ret</code> is set to |
| <span class="errorname">CL_SUCCESS</span> if the event object is created successfully. Otherwise, it returns a NULL value with one of the following error values returned in <code class="varname">errcode_ret</code>: |
| </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_CONTEXT</span> if <code class="varname">context</code> is not a valid context or was |
| not created from a GL context. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_GL_OBJECT</span> if <code class="varname">sync</code> is not the name of a sync |
| object in the GL share group associated with <code class="varname">context</code>. |
| </li> |
| </ul> |
| </div> |
| </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-1.1.pdf#page=327" 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_gl_event.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_gl_event</span></span></a>, |
| <a class="citerefentry" href="clEnqueueAcquireGLObjects.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueAcquireGLObjects</span></span></a>, |
| <a class="citerefentry" href="clRetainEvent.html"><span class="citerefentry"><span class="refentrytitle">clRetainEvent</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 © 2007-2010 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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