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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.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include "foundation/PxMemory.h"
#include "SqPruningPool.h"
using namespace physx;
using namespace Sq;
using namespace Cm;
PruningPool::PruningPool() :
mNbObjects (0),
mMaxNbObjects (0),
mWorldBoxes (NULL),
mObjects (NULL),
mHandleToIndex (NULL),
mIndexToHandle (NULL),
mFirstRecycledHandle(INVALID_PRUNERHANDLE)
{
}
PruningPool::~PruningPool()
{
PX_FREE_AND_RESET(mWorldBoxes);
PX_FREE_AND_RESET(mObjects);
PX_FREE_AND_RESET(mHandleToIndex);
PX_FREE_AND_RESET(mIndexToHandle);
}
bool PruningPool::resize(PxU32 newCapacity)
{
// PT: we always allocate one extra box, to make sure we can safely use V4 loads on the array
PxBounds3* newBoxes = reinterpret_cast<PxBounds3*>(PX_ALLOC(sizeof(PxBounds3)*(newCapacity+1), "PxBounds3"));
PrunerPayload* newData = reinterpret_cast<PrunerPayload*>(PX_ALLOC(sizeof(PrunerPayload)*newCapacity, "PrunerPayload*"));
PrunerHandle* newIndexToHandle = reinterpret_cast<PrunerHandle*>(PX_ALLOC(sizeof(PrunerHandle)*newCapacity, "Pruner Index Mapping"));
PoolIndex* newHandleToIndex = reinterpret_cast<PoolIndex*>(PX_ALLOC(sizeof(PoolIndex)*newCapacity, "Pruner Index Mapping"));
if( (NULL==newBoxes) || (NULL==newData) || (NULL==newIndexToHandle) || (NULL==newHandleToIndex)
)
{
PX_FREE_AND_RESET(newBoxes);
PX_FREE_AND_RESET(newData);
PX_FREE_AND_RESET(newIndexToHandle);
PX_FREE_AND_RESET(newHandleToIndex);
return false;
}
if(mWorldBoxes) PxMemCopy(newBoxes, mWorldBoxes, mNbObjects*sizeof(PxBounds3));
if(mObjects) PxMemCopy(newData, mObjects, mNbObjects*sizeof(PrunerPayload));
if(mIndexToHandle) PxMemCopy(newIndexToHandle, mIndexToHandle, mNbObjects*sizeof(PrunerHandle));
if(mHandleToIndex) PxMemCopy(newHandleToIndex, mHandleToIndex, mMaxNbObjects*sizeof(PoolIndex));
mMaxNbObjects = newCapacity;
PX_FREE_AND_RESET(mWorldBoxes);
PX_FREE_AND_RESET(mObjects);
PX_FREE_AND_RESET(mHandleToIndex);
PX_FREE_AND_RESET(mIndexToHandle);
mWorldBoxes = newBoxes;
mObjects = newData;
mHandleToIndex = newHandleToIndex;
mIndexToHandle = newIndexToHandle;
return true;
}
void PruningPool::preallocate(PxU32 newCapacity)
{
if(newCapacity>mMaxNbObjects)
resize(newCapacity);
}
PxU32 PruningPool::addObjects(PrunerHandle* results, const PxBounds3* bounds, const PrunerPayload* payload, PxU32 count)
{
for(PxU32 i=0;i<count;i++)
{
if(mNbObjects==mMaxNbObjects) // increase the capacity on overflow
{
if(!resize(PxMax<PxU32>(mMaxNbObjects*2, 64)))
{
// pool can return an invalid handle if memory alloc fails
// should probably have an error here or not handle this
results[i] = INVALID_PRUNERHANDLE; // PT: we need to write the potentially invalid handle to let users know which object failed first
return i;
}
}
PX_ASSERT(mNbObjects!=mMaxNbObjects);
const PoolIndex index = mNbObjects++;
// update mHandleToIndex and mIndexToHandle mappings
PrunerHandle handle;
if(mFirstRecycledHandle != INVALID_PRUNERHANDLE)
{
// mFirstRecycledHandle is an entry into a freelist for removed slots
// this path is only taken if we have any removed slots
handle = mFirstRecycledHandle;
mFirstRecycledHandle = mHandleToIndex[handle];
}
else
{
handle = index;
}
// PT: TODO: investigate why we added mIndexToHandle/mHandleToIndex. The initial design with 'Prunable' objects didn't need these arrays.
// PT: these 3 arrays are "parallel"
mWorldBoxes [index] = bounds[i]; // store the payload and AABB in parallel arrays
mObjects [index] = payload[i];
mIndexToHandle [index] = handle;
mHandleToIndex[handle] = index;
results[i] = handle;
}
return count;
}
PoolIndex PruningPool::removeObject(PrunerHandle h)
{
PX_ASSERT(mNbObjects);
// remove the object and its AABB by provided PrunerHandle and update mHandleToIndex and mIndexToHandle mappings
const PoolIndex indexOfRemovedObject = mHandleToIndex[h]; // retrieve object's index from handle
const PoolIndex indexOfLastObject = --mNbObjects; // swap the object at last index with index
if(indexOfLastObject!=indexOfRemovedObject)
{
// PT: move last object's data to recycled spot (from removed object)
// PT: the last object has moved so we need to handle the mappings for this object
// PT: TODO: investigate where this double-mapping comes from. Should not be needed...
// PT: these 3 arrays are "parallel"
const PrunerHandle handleOfLastObject = mIndexToHandle[indexOfLastObject];
mWorldBoxes [indexOfRemovedObject] = mWorldBoxes [indexOfLastObject];
mObjects [indexOfRemovedObject] = mObjects [indexOfLastObject];
mIndexToHandle [indexOfRemovedObject] = handleOfLastObject;
mHandleToIndex[handleOfLastObject] = indexOfRemovedObject;
}
// mHandleToIndex also stores the freelist for removed handles (in place of holes formed by removed handles)
mHandleToIndex[h] = mFirstRecycledHandle; // update linked list of available recycled handles
mFirstRecycledHandle = h; // update the list head
return indexOfLastObject;
}
void PruningPool::shiftOrigin(const PxVec3& shift)
{
for(PxU32 i=0; i < mNbObjects; i++)
{
mWorldBoxes[i].minimum -= shift;
mWorldBoxes[i].maximum -= shift;
}
}
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