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nvidia-cuda-toolkit-devel-4.2.9-2.mga2.nonfree.i586.rpm

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<title>NVIDIA CUDA Library: cuGLGetDevices</title>
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  <div class="navpath"><a class="el" href="group__CUDA__GL.html">OpenGL Interoperability</a>
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          <tr><td class="navtab"><a class="qindex" href="group__CUDA__GL_g923988b9596911c39bb55fd848015a3d.html#g923988b9596911c39bb55fd848015a3d">cuGLCtxCreate</a></td></tr>
          <tr><td class="navtab"><a class="qindex" href="group__CUDA__GL_g5d423ad540c04558b683661e279e0c58.html#g5d423ad540c04558b683661e279e0c58">CUGLDeviceList</a></td></tr>
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          <tr><td class="navtab"><a class="qindex" href="group__CUDA__GL_gd530f66cc9ab43a31a98527e75f343a0.html#gd530f66cc9ab43a31a98527e75f343a0">cuGraphicsGLRegisterBuffer</a></td></tr>
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          <tr><td class="navtab"><a class="qindex" href="group__CUDA__GL_g21ff8296192dc38dff42ba3346078282.html#g21ff8296192dc38dff42ba3346078282">cuWGLGetDevice</a></td></tr>
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<a class="anchor" name="g98bb15525b04d2f6a817c21e07d8b7cd"></a><!-- doxytag: member="cudaGL.h::cuGLGetDevices" ref="g98bb15525b04d2f6a817c21e07d8b7cd" args="(unsigned int *pCudaDeviceCount, CUdevice *pCudaDevices, unsigned int cudaDeviceCount, CUGLDeviceList deviceList)" -->
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          <td>(</td>
          <td class="paramtype">unsigned int *&nbsp;</td>
          <td class="paramname"> <em>pCudaDeviceCount</em>, </td>
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          <td class="paramtype"><a class="el" href="group__CUDA__TYPES_gcd81b70eb9968392bb5cdf582af8eab4.html#gcd81b70eb9968392bb5cdf582af8eab4">CUdevice</a> *&nbsp;</td>
          <td class="paramname"> <em>pCudaDevices</em>, </td>
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          <td class="paramtype">unsigned int&nbsp;</td>
          <td class="paramname"> <em>cudaDeviceCount</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype"><a class="el" href="group__CUDA__GL_g5d423ad540c04558b683661e279e0c58.html#g5d423ad540c04558b683661e279e0c58">CUGLDeviceList</a>&nbsp;</td>
          <td class="paramname"> <em>deviceList</em></td><td>&nbsp;</td>
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<p>
Returns in <code>*pCudaDeviceCount</code> the number of CUDA-compatible devices corresponding to the current OpenGL context. Also returns in <code>*pCudaDevices</code> at most cudaDeviceCount of the CUDA-compatible devices corresponding to the current OpenGL context. If any of the GPUs being used by the current OpenGL context are not CUDA capable then the call will return CUDA_ERROR_NO_DEVICE.<p>
The <code>deviceList</code> argument may be any of the following:<ul>
<li><a class="el" href="group__CUDA__GL_g3555fe44ce3d83b78a0ea894979d58c2.html#gg3555fe44ce3d83b78a0ea894979d58c243d2b311a54ae5c914c264e8395c3164">CU_GL_DEVICE_LIST_ALL</a>: Query all devices used by the current OpenGL context.</li><li><a class="el" href="group__CUDA__GL_g3555fe44ce3d83b78a0ea894979d58c2.html#gg3555fe44ce3d83b78a0ea894979d58c2dc48f515019afdc0a78cd366871b0fe1">CU_GL_DEVICE_LIST_CURRENT_FRAME</a>: Query the devices used by the current OpenGL context to render the current frame (in SLI).</li><li><a class="el" href="group__CUDA__GL_g3555fe44ce3d83b78a0ea894979d58c2.html#gg3555fe44ce3d83b78a0ea894979d58c29d6d52b3167bd1d144eb08db8b60325a">CU_GL_DEVICE_LIST_NEXT_FRAME</a>: Query the devices used by the current OpenGL context to render the next frame (in SLI). Note that this is a prediction, it can't be guaranteed that this is correct in all cases.</li></ul>
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<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pCudaDeviceCount</em>&nbsp;</td><td>- Returned number of CUDA devices. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pCudaDevices</em>&nbsp;</td><td>- Returned CUDA devices. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>cudaDeviceCount</em>&nbsp;</td><td>- The size of the output device array pCudaDevices. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>deviceList</em>&nbsp;</td><td>- The set of devices to return.</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#gg0cdead942fd5028d157641eef6bdeeaa761bea84083d384d4fb88d51d972aada">CUDA_ERROR_NO_DEVICE</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#gg0cdead942fd5028d157641eef6bdeeaaa484e9af32c1e9893ff21f0e0191a12d">CUDA_ERROR_INVALID_CONTEXT</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__GL_g923988b9596911c39bb55fd848015a3d.html#g923988b9596911c39bb55fd848015a3d" title="Create a CUDA context for interoperability with OpenGL.">cuGLCtxCreate</a>, <a class="el" href="group__CUDA__GL__DEPRECATED_g1eb69794b494f2908664737e3386aec4.html#g1eb69794b494f2908664737e3386aec4" title="Initializes OpenGL interoperability.">cuGLInit</a>, <a class="el" href="group__CUDA__GL_g21ff8296192dc38dff42ba3346078282.html#g21ff8296192dc38dff42ba3346078282" title="Gets the CUDA device associated with hGpu.">cuWGLGetDevice</a> </dd></dl>

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