// Disable persistency. previously, some older algorithm calculated all contacts in one go, so you can clear it here.
//m_dispatcher->clearManifold(m_btConvexTriangleCallback.m_manifoldPtr);
btConvexTriangleCallback.manifoldPtr.setBodies(convexBody, triBody);
concaveShape.processAllTriangles(
btConvexTriangleCallback,
btConvexTriangleCallback.getAabbMin(Stack.alloc(Vector3f.class)),
btConvexTriangleCallback.getAabbMax(Stack.alloc(Vector3f.class)));
resultOut.refreshContactPoints();