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<title>NVIDIA CUDA Library: cuGraphicsResourceGetMappedPointer</title>
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<div class="navpath"><a class="el" href="group__CUDA__GRAPHICS.html">Graphics Interoperability</a>
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<tr><td class="navtab"><a class="qindexHL" href="group__CUDA__GRAPHICS_g8a634cf4150d399f0018061580592457.html#g8a634cf4150d399f0018061580592457">cuGraphicsResourceGetMappedPointer</a></td></tr>
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<tr><td class="navtab"><a class="qindex" href="group__CUDA__GRAPHICS_g61c55e987e54558cce547240d6123078.html#g61c55e987e54558cce547240d6123078">cuGraphicsSubResourceGetMappedArray</a></td></tr>
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<a class="anchor" name="g8a634cf4150d399f0018061580592457"></a><!-- doxytag: member="cuda.h::cuGraphicsResourceGetMappedPointer" ref="g8a634cf4150d399f0018061580592457" args="(CUdeviceptr *pDevPtr, size_t *pSize, CUgraphicsResource resource)" -->
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<td class="memname"><a class="el" href="group__CUDA__TYPES_g09da14df1a751dcbfeccb9cf0073d64c.html#g09da14df1a751dcbfeccb9cf0073d64c">CUresult</a> cuGraphicsResourceGetMappedPointer </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__CUDA__TYPES_g5e264ce2ad6a38761e7e04921ef771de.html#g5e264ce2ad6a38761e7e04921ef771de">CUdeviceptr</a> * </td>
<td class="paramname"> <em>pDevPtr</em>, </td>
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<td class="paramtype">size_t * </td>
<td class="paramname"> <em>pSize</em>, </td>
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<td class="paramtype"><a class="el" href="group__CUDA__TYPES_gc0c4e1704647178d9c5ba3be46517dcd.html#gc0c4e1704647178d9c5ba3be46517dcd">CUgraphicsResource</a> </td>
<td class="paramname"> <em>resource</em></td><td> </td>
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<p>
Returns in <code>*pDevPtr</code> a pointer through which the mapped graphics resource <code>resource</code> may be accessed. Returns in <code>pSize</code> the size of the memory in bytes which may be accessed from that pointer. The value set in <code>pPointer</code> may change every time that <code>resource</code> is mapped.<p>
If <code>resource</code> is not a buffer then it cannot be accessed via a pointer and <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaa7ceef277b14abcb140c4ffa72a37473">CUDA_ERROR_NOT_MAPPED_AS_POINTER</a> is returned. If <code>resource</code> is not mapped then <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaae098433b926c9afdb6b6bdf191629447">CUDA_ERROR_NOT_MAPPED</a> is returned. * <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>pDevPtr</em> </td><td>- Returned pointer through which <code>resource</code> may be accessed </td></tr>
<tr><td valign="top"></td><td valign="top"><em>pSize</em> </td><td>- Returned size of the buffer accessible starting at <code>*pPointer</code> </td></tr>
<tr><td valign="top"></td><td valign="top"><em>resource</em> </td><td>- Mapped resource to access</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#gg0cdead942fd5028d157641eef6bdeeaaa484e9af32c1e9893ff21f0e0191a12d">CUDA_ERROR_INVALID_CONTEXT</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#gg0cdead942fd5028d157641eef6bdeeaa0fd2e63260c6317ba943af0f7e4b8d21">CUDA_ERROR_INVALID_HANDLE</a>, <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaae098433b926c9afdb6b6bdf191629447">CUDA_ERROR_NOT_MAPPED</a> <a class="el" href="group__CUDA__TYPES_g0cdead942fd5028d157641eef6bdeeaa.html#gg0cdead942fd5028d157641eef6bdeeaaa7ceef277b14abcb140c4ffa72a37473">CUDA_ERROR_NOT_MAPPED_AS_POINTER</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__GRAPHICS_gffcfd8e78d82cc4f6dd987e8bce4edb0.html#gffcfd8e78d82cc4f6dd987e8bce4edb0" title="Map graphics resources for access by CUDA.">cuGraphicsMapResources</a>, <a class="el" href="group__CUDA__GRAPHICS_g61c55e987e54558cce547240d6123078.html#g61c55e987e54558cce547240d6123078" title="Get an array through which to access a subresource of a mapped graphics resource...">cuGraphicsSubResourceGetMappedArray</a> </dd></dl>
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