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| <title>clCreateFromD3D10Texture2DKHR</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="clCreateFromD3D10Texture2DKHR"></a> |
| <h1>clCreateFromD3D10Texture2DKHR</h1> |
| <p>Creates an OpenCL 2D image object from a subresource of a Direct3D 10 2D texture.</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">clCreateFromD3D10Texture2DKHR</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>ID3D10Texture2D <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">UINT</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">subresource</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 2D texture to share. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname">subresource</code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| The subresource of <code class="varname">resource</code> 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 width, height and depth of the returned OpenCL 2D image object are determined |
| by the width, height and depth of subresource <code class="varname">subresource</code> of |
| <code class="varname">resource</code>. The channel type and order of the returned OpenCL 2D |
| image object is determined by the format of <code class="varname">resource</code> as shown in of |
| Direct3D 10 and corresponding OpenCL image formats of <code class="varname">resource</code> in |
| <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>. |
| </p> |
| <p> |
| 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 OpenGL interoperability. 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> or <code class="constant">CL_DEVICE_EXTENSIONS</code> |
| string described in the table of allowed values for <code class="varname">param_name</code> for |
| <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 cl_d3d10.h. |
| </p> |
| <p> |
| This section discusses OpenCL functions that 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-1.6.8"></a>Lifetime of Shared 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 <span class="errorname">CL_SUCCESS</span> returns a valid non-zero OpenCL image object |
| and <code class="varname">errcode_ret</code> is set to <span class="errorname">CL_SUCCESS</span> if the |
| image 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 or if <code class="varname">subresource</code> |
| is not a valid subresource index for <code class="varname">resource</code>. |
| </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 texture resource, if <code class="varname">resource</code> |
| was created with the D3D10_USAGE flag D3D10_USAGE_IMMUTABLE, if |
| a <code class="varname">resource</code> is a multisampled texture, if cl_mem from |
| subresource <code class="varname">subresource</code> of <code class="varname">resource</code> has |
| already been created using <code class="function">clCreateFromD3D10Texture2DKHR</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_INVALID_IMAGE_FORMAT_DESCRIPTOR</span> if the Direct3D |
| 10 texture format of <code class="varname">resource</code> is not a value listed |
| in the table of Direct3D 10 and corresponding OpenCL image formats for |
| <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>, |
| or if the Direct3D 10 texture format of <code class="varname">resource</code> does not map |
| to a supported OpenCL image format. |
| </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="http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf#page=74" 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>, |
| <a class="citerefentry" href="clGetDeviceIDsFromD3D10KHR.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceIDsFromD3D10KHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromD3D10BufferKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10BufferKHR</span></span></a>, |
| <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>, |
| <a class="citerefentry" href="clEnqueueAcquireD3D10ObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueAcquireD3D10ObjectsKHR</span></span></a>, |
| <a class="citerefentry" href="clEnqueueReleaseD3D10ObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReleaseD3D10ObjectsKHR</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 © 2007-2011 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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