Some work-in-progress on making btDbvtBroadphase deterministic. When using the btSortedOverlappingPairCache, it seems deterministic now. todo: when using btHashedOverlappingPairCache.

src/BulletCollision/BroadphaseCollision/btBroadphaseInterface.h

@@ -64,6 +64,9 @@ public:
 	///will add some transform later
 	virtual void getBroadphaseAabb(btVector3& aabbMin,btVector3& aabbMax) const =0;
 
+	///reset broadphase internal structures, to ensure determinism/reproducability
+	virtual void resetPool(btDispatcher* dispatcher)=0;
+
 	virtual void	printStats() = 0;
 
 };