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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
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// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
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// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
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// Copyright (c) 2013-2017 NVIDIA Corporation. All rights reserved.
#ifndef NV_FLEX_DEVICE_H
#define NV_FLEX_DEVICE_H
//! \cond HIDDEN_SYMBOLS
#ifndef NV_FLEX_API
#if _WIN32
#define NV_FLEX_API __declspec(dllexport)
#else
#define NV_FLEX_API
#endif
#endif
//! \endcond
/** \file
* NvFlexDevice is an optional helper library that performs some
* initialization tasks related to GPU device management.
* The library can be used to query the NVIDIA PhysX control panel for
* the selected "PhysX" GPU, and to create an optimized CUDA context.
* Currently the library is a closed source component but is purely optional.
* See the FlexDemo for an example of how to use the device API.
*/
/**
* Returns the CUDA ordinal of the GPU selected as "PhysX" in the NVIDIA control panel.
* Returns -1 if there is no NVIDIA CUDA device available.
*
* @note The returned ordinal is a CUDA ordinal and does not correspond to the DXGI
* ordinal. D3D users should use their own device selection method and pass the appropriate
* DXGI device index or custom D3D devices to NvFlexInit().
*/
NV_FLEX_API int NvFlexDeviceGetSuggestedOrdinal();
/**
* Creates a CUDA context optimized for Flex, returns true on success and sets the context
* as current on the calling thread. If using this method to initialize CUDA then you should
* ensure that no prior CUDA calls are made prior to avoid creating multiple contexts.
*
* @param[in] ordinal The CUDA ordinal of the GPU to create the context on, this can be the suggested ordinal (see flexDeviceGetSuggestedOrdinal()), or a manually selected ordinal.
*/
NV_FLEX_API bool NvFlexDeviceCreateCudaContext(int ordinal);
/**
* Destroy the context associated with the current thread, can be used to destroy the CUDA context created by flexDeviceCreateCudaContext().
*/
NV_FLEX_API void NvFlexDeviceDestroyCudaContext();
#endif // NV_FLEX_DEVICE_H |