NvCloth 1.1.4 Release. (24070740)

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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
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// 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
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
+
+
+#ifndef PXTASK_PXGPUTASK_H
+#define PXTASK_PXGPUTASK_H
+
+#include "task/PxTaskDefine.h"
+#include "task/PxTask.h"
+#include "task/PxGpuDispatcher.h"
+
+namespace physx
+{
+
+PX_PUSH_PACK_DEFAULT
+
+/** \brief Define the 'flavor' of a PxGpuTask
+ *
+ * Each PxGpuTask should have a specific function; either copying data to the
+ * device, running kernels on that data, or copying data from the device.
+ *
+ * For optimal performance, the dispatcher should run all available HtoD tasks
+ * before running all Kernel tasks, and all Kernel tasks before running any DtoH
+ * tasks.  This provides maximal kernel overlap and the least number of CUDA
+ * flushes.
+ */
+struct PxGpuTaskHint
+{
+	/// \brief Enums for the type of GPU task
+	enum Enum
+	{
+		HostToDevice,
+		Kernel,
+		DeviceToHost,
+
+		NUM_GPU_TASK_HINTS
+	};
+};
+
+/**
+ * \brief PxTask implementation for launching CUDA work
+ */
+class PxGpuTask : public PxTask
+{
+public:
+	PxGpuTask() : mComp(NULL) {}
+
+	/**
+	 * \brief iterative "run" function for a PxGpuTask
+	 *
+	 * The GpuDispatcher acquires the CUDA context for the duration of this
+	 * function call, and it is highly recommended that the PxGpuTask use the
+	 * provided CUstream for all kernels.
+	 *
+	 * kernelIndex will be 0 for the initial call and incremented before each
+	 * subsequent call.  Once launchInstance() returns false, its PxGpuTask is
+	 * considered completed and is released.
+	 */
+	virtual bool    launchInstance(CUstream stream, int kernelIndex) = 0;
+
+	/**
+	 * \brief Returns a hint indicating the function of this task
+	 */
+	virtual PxGpuTaskHint::Enum getTaskHint() const = 0;
+
+	/**
+	 * \brief Specify a task that will have its reference count decremented
+	 * when this task is released
+	 */
+	void setCompletionTask(PxBaseTask& task)
+	{
+		mComp = &task;
+	}
+
+	void release()
+	{
+		if (mComp)
+		{
+			mComp->removeReference();
+			mComp = NULL;
+		}
+		PxTask::release();
+	}
+
+protected:
+	/// \brief A pointer to the completion task
+	PxBaseTask* mComp;
+};
+
+PX_POP_PACK
+
+} // end physx namespace
+
+#endif // PXTASK_PXGPUTASK_H