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Attempts to improve performance. Not much gain yet, but good to experiment what has effect and what hasn't.

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Added 'DO_BENCHMARK_PYRAMID' to CcdPhysicsDemo.
This commit is contained in:
ejcoumans
2007-03-20 20:12:23 +00:00
parent f8fe7e8f2d
commit c1a54d9edc
19 changed files with 356 additions and 234 deletions
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22
src/BulletCollision/CollisionDispatch/btSimulationIslandManager.cpp
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@@ -122,12 +122,9 @@ class btPersistentManifoldSortPredicate
{
public:
bool operator() ( const btPersistentManifold* lhs, const btPersistentManifold* rhs )
SIMD_FORCE_INLINE bool operator() ( const btPersistentManifold* lhs, const btPersistentManifold* rhs )
{
int rIslandId0,lIslandId0;
rIslandId0 = getIslandId(rhs);
lIslandId0 = getIslandId(lhs);
return lIslandId0 < rIslandId0;
return getIslandId(lhs) < getIslandId(rhs);
}
};
@@ -142,8 +139,17 @@ void btSimulationIslandManager::buildAndProcessIslands(btDispatcher* dispatcher,
{
BEGIN_PROFILE("islandUnionFindAndHeapSort");
if (0)
{
int maxNumManifolds = dispatcher->getNumManifolds();
btCollisionDispatcher* colDis = (btCollisionDispatcher*)dispatcher;
btPersistentManifold** manifold = colDis->getInternalManifoldPointer();
callback->ProcessIsland(&collisionObjects[0],collisionObjects.size(),manifold,maxNumManifolds, 0);
return;
}
BEGIN_PROFILE("islandUnionFindAndHeapSort");
//we are going to sort the unionfind array, and store the element id in the size
//afterwards, we clean unionfind, to make sure no-one uses it anymore
@@ -152,9 +158,11 @@ void btSimulationIslandManager::buildAndProcessIslands(btDispatcher* dispatcher,
int numElem = getUnionFind().getNumElements();
int endIslandIndex=1;
int startIslandIndex;
//update the sleeping state for bodies, if all are sleeping
for (int startIslandIndex=0;startIslandIndex<numElem;startIslandIndex = endIslandIndex)
for ( startIslandIndex=0;startIslandIndex<numElem;startIslandIndex = endIslandIndex)
{
int islandId = getUnionFind().getElement(startIslandIndex).m_id;
for (endIslandIndex = startIslandIndex+1;(endIslandIndex<numElem) && (getUnionFind().getElement(endIslandIndex).m_id == islandId);endIslandIndex++)