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Diffstat (limited to 'extern/bullet2/BulletMultiThreaded/SpuCollisionTaskProcess.h')
| -rw-r--r-- | extern/bullet2/BulletMultiThreaded/SpuCollisionTaskProcess.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/extern/bullet2/BulletMultiThreaded/SpuCollisionTaskProcess.h b/extern/bullet2/BulletMultiThreaded/SpuCollisionTaskProcess.h new file mode 100644 index 00000000000..2614be6c479 --- /dev/null +++ b/extern/bullet2/BulletMultiThreaded/SpuCollisionTaskProcess.h @@ -0,0 +1,163 @@ +/* +Bullet Continuous Collision Detection and Physics Library +Copyright (c) 2003-2007 Erwin Coumans http://bulletphysics.com + +This software is provided 'as-is', without any express or implied warranty. +In no event will the authors be held liable for any damages arising from the use of this software. +Permission is granted to anyone to use this software for any purpose, +including commercial applications, and to alter it and redistribute it freely, +subject to the following restrictions: + +1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. +2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. +3. This notice may not be removed or altered from any source distribution. +*/ + +#ifndef SPU_COLLISION_TASK_PROCESS_H +#define SPU_COLLISION_TASK_PROCESS_H + +#include <assert.h> + +#include "LinearMath/btScalar.h" + +#include "PlatformDefinitions.h" +#include "LinearMath/btAlignedObjectArray.h" +#include "SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.h" // for definitions processCollisionTask and createCollisionLocalStoreMemory + +#include "btThreadSupportInterface.h" + + +//#include "SPUAssert.h" +#include <string.h> + + +#include "BulletCollision/CollisionDispatch/btCollisionObject.h" +#include "BulletCollision/CollisionShapes/btCollisionShape.h" +#include "BulletCollision/CollisionShapes/btConvexShape.h" + +#include "LinearMath/btAlignedAllocator.h" + +#include <stdio.h> + + +#define DEBUG_SpuCollisionTaskProcess 1 + + +#define CMD_GATHER_AND_PROCESS_PAIRLIST 1 + +class btCollisionObject; +class btPersistentManifold; +class btDispatcher; + + +/////Task Description for SPU collision detection +//struct SpuGatherAndProcessPairsTaskDesc +//{ +// uint64_t inPtr;//m_pairArrayPtr; +// //mutex variable +// uint32_t m_someMutexVariableInMainMemory; +// +// uint64_t m_dispatcher; +// +// uint32_t numOnLastPage; +// +// uint16_t numPages; +// uint16_t taskId; +// +// struct CollisionTask_LocalStoreMemory* m_lsMemory; +//} +// +//#if defined(__CELLOS_LV2__) || defined(USE_LIBSPE2) +//__attribute__ ((aligned (16))) +//#endif +//; + + +///MidphaseWorkUnitInput stores individual primitive versus mesh collision detection input, to be processed by the SPU. +ATTRIBUTE_ALIGNED16(struct) SpuGatherAndProcessWorkUnitInput +{ + uint64_t m_pairArrayPtr; + int m_startIndex; + int m_endIndex; +}; + + + + +/// SpuCollisionTaskProcess handles SPU processing of collision pairs. +/// Maintains a set of task buffers. +/// When the task is full, the task is issued for SPUs to process. Contact output goes into btPersistentManifold +/// associated with each task. +/// When PPU issues a task, it will look for completed task buffers +/// PPU will do postprocessing, dependent on workunit output (not likely) +class SpuCollisionTaskProcess +{ + + unsigned char *m_workUnitTaskBuffers; + + + // track task buffers that are being used, and total busy tasks + btAlignedObjectArray<bool> m_taskBusy; + btAlignedObjectArray<SpuGatherAndProcessPairsTaskDesc> m_spuGatherTaskDesc; + + class btThreadSupportInterface* m_threadInterface; + + unsigned int m_maxNumOutstandingTasks; + + unsigned int m_numBusyTasks; + + // the current task and the current entry to insert a new work unit + unsigned int m_currentTask; + unsigned int m_currentPage; + unsigned int m_currentPageEntry; + + bool m_useEpa; + +#ifdef DEBUG_SpuCollisionTaskProcess + bool m_initialized; +#endif + void issueTask2(); + //void postProcess(unsigned int taskId, int outputSize); + +public: + SpuCollisionTaskProcess(btThreadSupportInterface* threadInterface, unsigned int maxNumOutstandingTasks); + + ~SpuCollisionTaskProcess(); + + ///call initialize in the beginning of the frame, before addCollisionPairToTask + void initialize2(bool useEpa = false); + + ///batch up additional work to a current task for SPU processing. When batch is full, it issues the task. + void addWorkToTask(void* pairArrayPtr,int startIndex,int endIndex); + + ///call flush to submit potential outstanding work to SPUs and wait for all involved SPUs to be finished + void flush2(); + + /// set the maximum number of SPU tasks allocated + void setNumTasks(int maxNumTasks); + + int getNumTasks() const + { + return m_maxNumOutstandingTasks; + } +}; + + + +#define MIDPHASE_TASK_PTR(task) (&m_workUnitTaskBuffers[0] + MIDPHASE_WORKUNIT_TASK_SIZE*task) +#define MIDPHASE_ENTRY_PTR(task,page,entry) (MIDPHASE_TASK_PTR(task) + MIDPHASE_WORKUNIT_PAGE_SIZE*page + sizeof(SpuGatherAndProcessWorkUnitInput)*entry) +#define MIDPHASE_OUTPUT_PTR(task) (&m_contactOutputBuffers[0] + MIDPHASE_MAX_CONTACT_BUFFER_SIZE*task) +#define MIDPHASE_TREENODES_PTR(task) (&m_complexShapeBuffers[0] + MIDPHASE_COMPLEX_SHAPE_BUFFER_SIZE*task) + + +#define MIDPHASE_WORKUNIT_PAGE_SIZE (16) +//#define MIDPHASE_WORKUNIT_PAGE_SIZE (128) + +#define MIDPHASE_NUM_WORKUNIT_PAGES 1 +#define MIDPHASE_WORKUNIT_TASK_SIZE (MIDPHASE_WORKUNIT_PAGE_SIZE*MIDPHASE_NUM_WORKUNIT_PAGES) +#define MIDPHASE_NUM_WORKUNITS_PER_PAGE (MIDPHASE_WORKUNIT_PAGE_SIZE / sizeof(SpuGatherAndProcessWorkUnitInput)) +#define MIDPHASE_NUM_WORKUNITS_PER_TASK (MIDPHASE_NUM_WORKUNITS_PER_PAGE*MIDPHASE_NUM_WORKUNIT_PAGES) + + +#endif // SPU_COLLISION_TASK_PROCESS_H + |