Files
bullet3/Extras/BulletMultiThreaded/SpuGatheringCollisionDispatcher.h
ejcoumans 87df3d0f32 Based on feedback from another professional game company, there are several improvements, including some API change...
Some dynamic memory allocations have been replace by pool allocation or stack allocations.
quantized aabb versus quantized aabb overlap check is made branch-free (helps a lot on consoles PS3/XBox 360)
Collision algorithms are now created through a new btDefaultCollisionConfiguration, to decouple dependency (this is the API change):
Example:
	btDefaultCollisionConfiguration* collisionConfiguration = new btDefaultCollisionConfiguration();
	m_dispatcher = new	btCollisionDispatcher(collisionConfiguration);
2007-09-08 05:40:01 +00:00

65 lines
2.5 KiB
C++

/*
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_GATHERING_COLLISION__DISPATCHER_H
#define SPU_GATHERING_COLLISION__DISPATCHER_H
#include "BulletCollision/CollisionDispatch/btCollisionDispatcher.h"
///Tuning value to optimized SPU utilization
///Too small value means Task overhead is large compared to computation (too fine granularity)
///Too big value might render some SPUs are idle, while a few other SPUs are doing all work.
#define SPU_BATCHSIZE_BROADPHASE_PAIRS 16
//#define SPU_BATCHSIZE_BROADPHASE_PAIRS 256
class SpuCollisionTaskProcess;
///SpuGatheringCollisionDispatcher can use SPU to gather and calculate collision detection
///Time of Impact, Closest Points and Penetration Depth.
class SpuGatheringCollisionDispatcher : public btCollisionDispatcher
{
SpuCollisionTaskProcess* m_spuCollisionTaskProcess;
protected:
class btThreadSupportInterface* m_threadInterface;
unsigned int m_maxNumOutstandingTasks;
public:
//can be used by SPU collision algorithms
SpuCollisionTaskProcess* getSpuCollisionTaskProcess()
{
return m_spuCollisionTaskProcess;
}
SpuGatheringCollisionDispatcher (class btThreadSupportInterface* threadInterface, unsigned int maxNumOutstandingTasks,btCollisionConfiguration* collisionConfiguration);
virtual ~SpuGatheringCollisionDispatcher();
bool supportsDispatchPairOnSpu(int proxyType0,int proxyType1);
virtual void dispatchAllCollisionPairs(btOverlappingPairCache* pairCache,btDispatcherInfo& dispatchInfo,btDispatcher* dispatcher);
};
#endif //SPU_GATHERING_COLLISION__DISPATCHER_H