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| <title>cl_khr_dx9_media_sharing</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="cl_khr_dx9_media_sharing"></a> |
| <h1>cl_khr_dx9_media_sharing</h1> |
| <p> |
| Provide sharing of data between OpenCL and DX9. |
| </p> |
| </div> |
| <div class="refsect2"> |
| <a id="synopsis"></a> |
| <h3> |
| </h3> |
| <div class="informaltable"> |
| <table class="informaltable" border="0"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td align="left"> |
| #pragma OPENCL EXTENSION cl_khr_dx9_media_sharing : enable |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| If the <code class="function">cl_khr_dx9_media_sharing</code> extension is supported, then |
| the following functions are enabled: |
| </p> |
| <div class="itemizedlist"> |
| <ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem" style="list-style-type: disc"> |
| <a class="citerefentry" href="clGetDeviceIDsFromDX9MediaAdapterKHR.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">clGetDeviceIDsFromDX9MediaAdapterKHR</span> |
| </span> |
| </a> |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| <a class="citerefentry" href="clCreateFromDX9MediaSurfaceKHR.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">clCreateFromDX9MediaSurfaceKHR</span> |
| </span> |
| </a> |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| <a class="citerefentry" href="clEnqueueAcquireDX9MediaSurfacesKHR.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">clEnqueueAcquireDX9MediaSurfacesKHR</span> |
| </span> |
| </a> |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| <a class="citerefentry" href="clEnqueueReleaseDX9MediaSurfacesKHR.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">clEnqueueReleaseDX9MediaSurfacesKHR</span> |
| </span> |
| </a> |
| </li> |
| </ul> |
| </div> |
| <p> |
| General information about sharing memory objects with DX9 follows. |
| </p> |
| <p> |
| The goal of this extension is to allow applications to use media surfaces as OpenCL memory |
| objects. This allows efficient sharing of data between OpenCL and selected adapter APIs (only |
| DX9 for now). If this extension is supported, an OpenCL image object can be created from a |
| media surface and the OpenCL API can be used to execute kernels that read and/or write |
| memory objects that are media surfaces. Note that OpenCL memory objects may be created |
| from the adapter media surface if and only if the OpenCL context has been created from that |
| adapter. |
| </p> |
| <p> |
| If this extension is supported by an implementation, the string "cl_khr_dx9_media_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_dx9_media_sharing.h</code>. |
| </p> |
| <h4><a id="id-1.5.8"></a>Surface formats for Media Surface Sharing</h4> |
| <p> |
| |
| This section includes the D3D surface formats |
| that are supported when the adapter type is one of the Direct 3D lineage. Using a D3D |
| surface format not listed here is an error. To extend the use of this extension to support |
| media adapters beyond DirectX9 tables similar to the ones in this section will need to be |
| defined for the surface formats supported by the new media adapter. All implementations |
| that support this extension are required to support the NV12 surface format, the other |
| surface formats supported are the same surface formats that the adapter you are sharing |
| with supports as long as they are listed in the tables below (Tables 9.10.3 and 9.10.4). |
| </p> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="center" class="col1" /> |
| <col align="center" class="col2" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="center">FOUR CC code</th> |
| <th align="center">CL image format (channel order, channel data type)</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="center">FOURCC('N', 'V', '1', '2'), Plane 0</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">FOURCC('N', 'V', '1', '2'), Plane 1</td> |
| <td align="center"> |
| <code class="constant">CL_RG, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">FOURCC('Y', 'V', '1', '2'), Plane 0</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">FOURCC('Y', 'V', '1', '2'), Plane 1</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">FOURCC('Y', 'V', '1', '2'), Plane 2</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <p> |
| In the table above, NV12 Plane 0 corresponds to the luminance (Y) channel and Plane 1 |
| corresponds to the UV channels. The YV12 Plane 0 corresponds to the Y channel, Plane |
| 1 to the U channel and Plane 2 to the V channel. Note that the YUV formats map to |
| <code class="constant">CL_R</code> and <code class="constant">CL_RG</code> but do not perform any YUV to |
| RGB conversion and vice-versa. |
| </p> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="center" class="col1" /> |
| <col align="center" class="col2" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="center">D3D format</th> |
| <th align="center">CL image format (channel order, channel data type)</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="center">D3DFMT_R32F</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_FLOAT</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_R16F</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_HALF_FLOAT</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_L16</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_UNORM_INT16</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A8</td> |
| <td align="center"> |
| <code class="constant">CL_A, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_L8</td> |
| <td align="center"> |
| <code class="constant">CL_R, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_G32R32F</td> |
| <td align="center"> |
| <code class="constant">CL_RG, CL_FLOAT</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_G16R16F</td> |
| <td align="center"> |
| <code class="constant">CL_RG, CL_HALF_FLOAT</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_G16R16</td> |
| <td align="center"> |
| <code class="constant">CL_RG, CL_UNORM_INT16</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A8L8</td> |
| <td align="center"> |
| <code class="constant">CL_RG, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A32B32G32R32F</td> |
| <td align="center"> |
| <code class="constant">CL_RGBA, CL_FLOAT</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A16B16G16R16F</td> |
| <td align="center"> |
| <code class="constant">CL_RGBA, CL_HALF_FLOAT</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A16B16G16R16</td> |
| <td align="center"> |
| <code class="constant">CL_RGBA, CL_UNORM_INT16</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A8B8G8R8</td> |
| <td align="center"> |
| <code class="constant">CL_RGBA, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_X8B8G8R8</td> |
| <td align="center"> |
| <code class="constant">CL_RGBA, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_A8R8G8B8</td> |
| <td align="center"> |
| <code class="constant">CL_BGRA, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| <tr> |
| <td align="center">D3DFMT_X8R8G8B8</td> |
| <td align="center"> |
| <code class="constant">CL_BGRA, CL_UNORM_INT8</code> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <p> |
| Note that D3D9 format names seem to imply that the order of the color channels are switched |
| relative to OpenCL but this is not the case. For example, layout of channels for each pixel |
| for <code class="constant">D3DFMT_A32FB32FG32FR32F</code> is the same as |
| <code class="constant">CL_RGBA</code>, <code class="constant">CL_FLOAT</code>. |
| </p> |
| <p> |
| Properties of media surface objects may be queried using |
| <a class="citerefentry" href="clGetMemObjectInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetMemObjectInfo</span></span></a> |
| and <a class="citerefentry" href="clGetImageInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetImageInfo</span></span></a> with |
| <code class="varname">param_name</code> <code class="constant">CL_MEM_DX9_MEDIA_ADAPTER_TYPE_KHR</code>, |
| <code class="constant">CL_MEM_DX9_MEDIA_SURFACE_INFO_KHR</code> and |
| <code class="constant">CL_IMAGE_DX9_MEDIA_SURFACE_PLANE_KHR</code>. |
| </p> |
| </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=81" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="EXTENSION.html"><span class="citerefentry"><span class="refentrytitle">EXTENSION</span></span></a>, |
| <a class="citerefentry" href="clGetPlatformInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetPlatformInfo</span></span></a>, |
| <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</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> |
