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| <title>clCreateFromD3D10BufferKHR</title> |
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| <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="clCreateFromD3D10BufferKHR"></a> |
| <h1>clCreateFromD3D10BufferKHR</h1> |
| <p>Creates an OpenCL buffer object from a Direct3D 10 buffer.</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="pagedisplay">cl_mem</a> |
| <strong class="fsfunc">clCreateFromD3D10BufferKHR</strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_context</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">context</var>, </td> |
| </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="enums.html#cl_mem_flags" target="pagedisplay">cl_mem_flags</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">flags</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td>ID3D10Buffer <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*resource</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_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 a Direct3D 10 device. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">flags</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A bit-field that is used to specify usage information. May be |
| <code class="constant">CL_MEM_READ_ONLY</code>, <code class="constant">CL_MEM_WRITE_ONLY</code>, |
| or <code class="constant">CL_MEM_READ_WRITE</code>. (See the table for |
| <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a> |
| for more information.) |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">resource</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A pointer to the Direct3D 10 buffer to share. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">errcode_ret</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| An appropriate error code. If <code class="varname">errcode_ret</code> is NULL, no error code is returned. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="notes"></a> |
| <h2>Notes</h2> |
| <p> |
| The size of the returned OpenCL buffer object is the same as the size |
| of <code class="varname">resource</code>. This call will increment the internal Direct3D |
| reference count on <code class="varname">resource</code>. The internal Direct3D reference count |
| on <code class="varname">resource</code> will be decremented when the OpenCL reference count |
| on the returned OpenCL memory object drops to zero. |
| </p> |
| <p> |
| General information about sharing memory objects with Direct3D 10 follows. |
| </p> |
| <p> |
| The goal of this extension is to provide interoperability between |
| OpenCL and Direct3D 10. This is designed to function analogously |
| to the <a class="citerefentry" href="cl_khr_gl_sharing.html"><span class="citerefentry"><span class="refentrytitle">OpenGL |
| interoperability</span></span></a> as defined in sections 9.7 and 9.8. If |
| this extension is supported by an implementation, the string "cl_khr_d3d10_sharing" |
| will be present in the <code class="constant">CL_PLATFORM_EXTENSIONS</code> |
| (see <a class="citerefentry" href="clGetPlatformInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetPlatformInfo</span></span></a>) |
| or <code class="constant">CL_DEVICE_EXTENSIONS</code> |
| (see <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a>). |
| </p> |
| <p> |
| As currently proposed the interfaces for this extension would be provided in |
| <code class="code">cl_d3d10.h</code>. |
| </p> |
| <p> |
| |
| The OpenCL functions enabled by the <code class="function">cl_khr_d3d10_sharing</code> extension |
| allow applications to use Direct3D 10 resources as OpenCL memory objects. This allows |
| efficient sharing of data between OpenCL and Direct3D 10. The OpenCL API may be used |
| to execute kernels that read and/or write memory objects that are also Direct3D 10 |
| resources. An OpenCL image object may be created from a Direct3D 10 texture resource. An |
| OpenCL buffer object may be created from a Direct3D 10 buffer resource. OpenCL memory |
| objects may be created from Direct3D 10 objects if and only if the OpenCL context |
| has been created from a Direct3D 10 device. |
| </p> |
| <h4><a id="id-1.6.7"></a>Lifetime of Shared [D3D10] Objects</h4> |
| <p> |
| An OpenCL memory object created from a Direct3D 10 resource remains valid as long as the |
| corresponding Direct3D 10 resource has not been deleted. If the Direct3D 10 resource is deleted |
| through the Direct3D 10 API, subsequent use of the OpenCL memory object will result in |
| undefined behavior, including but not limited to possible OpenCL errors, data corruption, and |
| program termination. |
| </p> |
| <p> |
| The successful creation of a cl_context against a Direct3D 10 device specified via the context |
| create parameter <code class="constant">CL_CONTEXT_D3D10_DEVICE_KHR</code> will increment the internal Direct3D |
| reference count on the specified Direct3D 10 device. The internal Direct3D reference count on |
| that Direct3D 10 device will be decremented when the OpenCL reference count on the returned |
| OpenCL context drops to zero. |
| </p> |
| <p> |
| The OpenCL context and corresponding command-queues are dependent on the existence of the |
| Direct3D 10 device from which the OpenCL context was created. If the Direct3D 10 device is |
| deleted through the Direct3D 10 API, subsequent use of the OpenCL context will result in |
| undefined behavior, including but not limited to possible OpenCL errors, data corruption, and |
| program termination. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| Returns a valid non-zero OpenCL buffer |
| object and <code class="varname">errcode_ret</code> is set to <span class="errorname">CL_SUCCESS</span> |
| if the buffer 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. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if values specified in <code class="varname">flags</code> are |
| not valid. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_D3D10_RESOURCE_KHR</span> if <code class="varname">resource</code> |
| is not a Direct3D 10 buffer resource, if <code class="varname">resource</code> was created with |
| the <code class="constant">D3D10_USAGE</code> flag <code class="constant">D3D10_USAGE_IMMUTABLE</code>, |
| if a <span class="type">cl_mem</span> from <code class="varname">resource</code> has already been created using |
| <code class="function">clCreateFromD3D10BufferKHR</code>, or if <code class="varname">context</code> |
| was not created against the same Direct3D 10 device from which |
| <code class="varname">resource</code> was created. |
| </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#namedest=clCreateFromD3D10BufferKHR" 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_d3d10_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d10_sharing</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 |
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