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<title>NVIDIA CUDA Library: cuD3D9CtxCreateOnDevice</title>
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<div class="navpath"><a class="el" href="group__CUDA__D3D9.html">Direct3D 9 Interoperability</a>
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<tr><td class="navtab"><a class="qindex" href="group__CUDA__D3D9_gab201a2284d11b00cdb4d6bba492e520.html#gab201a2284d11b00cdb4d6bba492e520">cuD3D9CtxCreate</a></td></tr>
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<a class="anchor" name="gcaca5329caf0c0253a5a944ecc958742"></a><!-- doxytag: member="cudaD3D9.h::cuD3D9CtxCreateOnDevice" ref="gcaca5329caf0c0253a5a944ecc958742" args="(CUcontext *pCtx, unsigned int flags, IDirect3DDevice9 *pD3DDevice, CUdevice cudaDevice)" -->
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<td class="memname"><a class="el" href="group__CUDA__TYPES_g09da14df1a751dcbfeccb9cf0073d64c.html#g09da14df1a751dcbfeccb9cf0073d64c">CUresult</a> cuD3D9CtxCreateOnDevice </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__CUDA__TYPES_gf9f5bd81658f866613785b3a0bb7d7d9.html#gf9f5bd81658f866613785b3a0bb7d7d9">CUcontext</a> * </td>
<td class="paramname"> <em>pCtx</em>, </td>
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<td class="paramtype">unsigned int </td>
<td class="paramname"> <em>flags</em>, </td>
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<td class="paramtype">IDirect3DDevice9 * </td>
<td class="paramname"> <em>pD3DDevice</em>, </td>
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<td class="paramtype"><a class="el" href="group__CUDA__TYPES_gcd81b70eb9968392bb5cdf582af8eab4.html#gcd81b70eb9968392bb5cdf582af8eab4">CUdevice</a> </td>
<td class="paramname"> <em>cudaDevice</em></td><td> </td>
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<p>
Creates a new CUDA context, enables interoperability for that context with the Direct3D device <code>pD3DDevice</code>, and associates the created CUDA context with the calling thread. The created <a class="el" href="group__CUDA__TYPES_gf9f5bd81658f866613785b3a0bb7d7d9.html#gf9f5bd81658f866613785b3a0bb7d7d9">CUcontext</a> will be returned in <code>*pCtx</code>. Direct3D resources from this device may be registered and mapped through the lifetime of this CUDA context.<p>
On success, this call will increase the internal reference count on <code>pD3DDevice</code>. This reference count will be decremented upon destruction of this context through <a class="el" href="group__CUDA__CTX_g27a365aebb0eb548166309f58a1e8b8e.html#g27a365aebb0eb548166309f58a1e8b8e" title="Destroy a CUDA context.">cuCtxDestroy()</a>. This context will cease to function if <code>pD3DDevice</code> is destroyed or encounters an error.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>pCtx</em> </td><td>- Returned newly created CUDA context </td></tr>
<tr><td valign="top"></td><td valign="top"><em>flags</em> </td><td>- Context creation flags (see <a class="el" href="group__CUDA__CTX_g65dc0012348bc84810e2103a40d8e2cf.html#g65dc0012348bc84810e2103a40d8e2cf" title="Create a CUDA context.">cuCtxCreate()</a> for details) </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pD3DDevice</em> </td><td>- Direct3D device to create interoperability context with </td></tr>
<tr><td valign="top"></td><td valign="top"><em>cudaDevice</em> </td><td>- The CUDA device on which to create the context. This device must be among the devices returned when querying CU_D3D9_DEVICES_ALL from <a class="el" href="group__CUDA__D3D9_g2c53ac0b20c57738fa497d1f8992f7ad.html#g2c53ac0b20c57738fa497d1f8992f7ad" title="Gets the CUDA devices corresponding to a Direct3D 9 device.">cuD3D9GetDevices</a>.</td></tr>
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<dl class="return" compact><dt><b>Returns:</b></dt><dd><a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaa0eed720f8a87cd1c5fd1c453bc7a03d">CUDA_SUCCESS</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaacf52f132faf29b473cdda6061f0f44a">CUDA_ERROR_DEINITIALIZED</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaa8feb999f0af99b4a25ab26b3866f4df8">CUDA_ERROR_NOT_INITIALIZED</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaa90696c86fcee1f536a1ec7d25867feeb">CUDA_ERROR_INVALID_VALUE</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaa264c50688ed110e8476b591befe60c02">CUDA_ERROR_OUT_OF_MEMORY</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaac5a6ab0245179d297f1fa56ed0097183">CUDA_ERROR_UNKNOWN</a> </dd></dl>
<dl class="note" compact><dt><b>Note:</b></dt><dd>Note that this function may also return error codes from previous, asynchronous launches.</dd></dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="group__CUDA__D3D9_g2c53ac0b20c57738fa497d1f8992f7ad.html#g2c53ac0b20c57738fa497d1f8992f7ad" title="Gets the CUDA devices corresponding to a Direct3D 9 device.">cuD3D9GetDevices</a>, <a class="el" href="group__CUDA__D3D9_g391835e0d3c5a34bdba99840157194bf.html#g391835e0d3c5a34bdba99840157194bf" title="Register a Direct3D 9 resource for access by CUDA.">cuGraphicsD3D9RegisterResource</a> </dd></dl>
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