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authorgit perforce import user <a@b>2016-10-25 12:29:14 -0600
committerSheikh Dawood Abdul Ajees <Sheikh Dawood Abdul Ajees>2016-10-25 18:56:37 -0500
commit3dfe2108cfab31ba3ee5527e217d0d8e99a51162 (patch)
treefa6485c169e50d7415a651bf838f5bcd0fd3bfbd /PhysX_3.4/Samples/SampleBase/InputEventBuffer.h
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Initial commit:
PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @ 21275617 [CL 21300167]
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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) 2008-2016 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#ifndef INPUT_BUFFER_H
+#define INPUT_BUFFER_H
+
+#include "SamplePreprocessor.h"
+#include "SampleAllocator.h"
+#include "SampleUserInput.h"
+#include "foundation/PxAssert.h"
+#include "PsIntrinsics.h"
+
+class PhysXSampleApplication;
+
+template<typename T, PxU32 SIZE>
+class RingBuffer
+{
+public:
+ RingBuffer()
+ : mReadCount(0)
+ , mWriteCount(0)
+ {
+ // SIZE has to be power of two
+#if PX_VC
+ PX_COMPILE_TIME_ASSERT(SIZE > 0);
+ PX_COMPILE_TIME_ASSERT((SIZE&(SIZE-1)) == 0);
+#else
+ PX_ASSERT(SIZE > 0);
+ PX_ASSERT((SIZE&(SIZE-1)) == 0);
+#endif
+ }
+
+ PX_FORCE_INLINE bool isEmpty() const { return mReadCount==mWriteCount; }
+ PX_FORCE_INLINE bool isFull() const { return isFull(mReadCount, mWriteCount); }
+ PX_FORCE_INLINE PxU32 size() const { return size(mReadCount, mWriteCount); }
+ PX_FORCE_INLINE PxU32 capacity() const { return SIZE; }
+ // clear is only save if called from reader thread!
+ PX_FORCE_INLINE void clear() { mReadCount=mWriteCount; }
+ PX_FORCE_INLINE const T& back() const { PX_ASSERT(!isEmpty()); return mRing[mReadCount&moduloMask]; }
+ PX_FORCE_INLINE T& front() { return mRing[mWriteCount&moduloMask]; }
+ PX_FORCE_INLINE void incFront(PxU32 inc) { PX_ASSERT(SIZE-size() >= inc); mWriteCount+=inc; }
+ PX_FORCE_INLINE void incBack(PxU32 inc) { PX_ASSERT(size() >= inc); mReadCount+=inc; }
+
+ PX_FORCE_INLINE bool pushFront(const T& e)
+ {
+ if(!isFull())
+ {
+ mRing[mWriteCount&moduloMask] = e;
+ Ps::memoryBarrier();
+ mWriteCount++;
+ return true;
+ }
+ else
+ return false;
+
+ }
+
+ PX_FORCE_INLINE bool popBack(T& e)
+ {
+ if(!isEmpty())
+ {
+ e = mRing[mReadCount&moduloMask];
+ mReadCount++;
+ return true;
+ }
+ else
+ return false;
+ }
+
+private:
+ PX_FORCE_INLINE static PxU32 moduloDistance(PxI32 r, PxI32 w) { return PxU32((w-r)&moduloMask); }
+ PX_FORCE_INLINE static bool isFull(PxI32 r, PxI32 w) { return r!=w && moduloDistance(r,w)==0; }
+ PX_FORCE_INLINE static PxU32 size(PxI32 r, PxI32 w) { return isFull(r, w) ? SIZE : moduloDistance(r, w); }
+
+private:
+ static const PxU32 moduloMask = SIZE-1;
+ T mRing[SIZE];
+ volatile PxI32 mReadCount;
+ volatile PxI32 mWriteCount;
+};
+
+
+class InputEventBuffer: public SampleFramework::InputEventListener, public SampleAllocateable
+{
+public:
+
+ InputEventBuffer(PhysXSampleApplication& p);
+ virtual ~InputEventBuffer();
+
+ virtual void onKeyDownEx(SampleFramework::SampleUserInput::KeyCode keyCode, PxU32 wParam);
+ virtual void onAnalogInputEvent(const SampleFramework::InputEvent& , float val);
+ virtual void onDigitalInputEvent(const SampleFramework::InputEvent& , bool val);
+ virtual void onPointerInputEvent(const SampleFramework::InputEvent&, PxU32 x, PxU32 y, PxReal dx, PxReal dy, bool val);
+ void clear();
+ void flush();
+private:
+ PX_FORCE_INLINE void checkResetLastInput()
+ {
+ if(mResetInputCacheReq!=mResetInputCacheAck)
+ {
+ mLastKeyDownEx = NULL;
+ mLastDigitalInput = NULL;
+ mLastAnalogInput = NULL;
+ mLastPointerInput = NULL;
+ mResetInputCacheAck++;
+ PX_ASSERT(mResetInputCacheReq==mResetInputCacheAck);
+ }
+ }
+ struct EventType
+ {
+ virtual ~EventType() {}
+ virtual void report(PhysXSampleApplication& app) const { }
+ };
+ struct KeyDownEx: public EventType
+ {
+ virtual void report(PhysXSampleApplication& app) const;
+
+ bool isEqual(SampleFramework::SampleUserInput::KeyCode _keyCode, PxU32 _wParam)
+ {
+ return (_keyCode == keyCode) && (_wParam == wParam);
+ }
+
+ SampleFramework::SampleUserInput::KeyCode keyCode;
+ PxU32 wParam;
+ };
+ struct AnalogInput: public EventType
+ {
+ virtual void report(PhysXSampleApplication& app) const;
+
+ bool isEqual(SampleFramework::InputEvent _e, float _val)
+ {
+ return (_e.m_Id == e.m_Id) && (_e.m_Analog == e.m_Analog) && (_e.m_Sensitivity == e.m_Sensitivity) && (_val == val);
+ }
+
+ SampleFramework::InputEvent e;
+ float val;
+ };
+ struct DigitalInput: public EventType
+ {
+ virtual void report(PhysXSampleApplication& app) const;
+
+ bool isEqual(SampleFramework::InputEvent _e, bool _val)
+ {
+ return (_e.m_Id == e.m_Id) && (_e.m_Analog == e.m_Analog) && (_e.m_Sensitivity == e.m_Sensitivity) && (_val == val);
+ }
+
+ SampleFramework::InputEvent e;
+ bool val;
+ };
+ struct PointerInput: public EventType
+ {
+ virtual void report(PhysXSampleApplication& app) const;
+
+ bool isEqual(SampleFramework::InputEvent _e, PxU32 _x, PxU32 _y, PxReal _dx, PxReal _dy, bool _val)
+ {
+ return (_e.m_Id == e.m_Id) && (_e.m_Analog == e.m_Analog) && (_e.m_Sensitivity == e.m_Sensitivity) &&
+ (_x == x) && (_y == y) && (_dx == dx) && (_dy == dy) && (_val == val);
+ }
+
+ SampleFramework::InputEvent e;
+ PxU32 x;
+ PxU32 y;
+ PxReal dx;
+ PxReal dy;
+ bool val;
+ };
+
+ struct EventsUnion
+ {
+ template<class Event> PX_CUDA_CALLABLE PX_FORCE_INLINE Event& get()
+ {
+ return reinterpret_cast<Event&>(events);
+ }
+ template<class Event> PX_CUDA_CALLABLE PX_FORCE_INLINE const Event& get() const
+ {
+ return reinterpret_cast<const Event&>(events);
+ }
+ union
+ {
+ PxU8 eventType[sizeof(EventType)];
+ PxU8 keyDownEx[sizeof(KeyDownEx)];
+ PxU8 analogInput[sizeof(AnalogInput)];
+ PxU8 digitalInput[sizeof(DigitalInput)];
+ PxU8 pointerInput[sizeof(PointerInput)];
+ } events;
+ };
+
+ static const PxU32 MAX_EVENTS = 64;
+ static const PxU32 MAX_MOUSE_EVENTS = 48;
+ static const PxU32 MAX_ANALOG_EVENTS = 48;
+ RingBuffer<EventsUnion, MAX_EVENTS> mRingBuffer;
+ volatile PxU32 mResetInputCacheReq;
+ volatile PxU32 mResetInputCacheAck;
+ KeyDownEx* mLastKeyDownEx;
+ DigitalInput* mLastDigitalInput;
+ AnalogInput* mLastAnalogInput;
+ PointerInput* mLastPointerInput;
+ PhysXSampleApplication& mApp;
+ bool mClearBuffer;
+};
+
+#endif