float timer = 0.f;
float const notImmediateModeDuration = 3;
float const immediateModeDuration = .5;
float const fakeDt = 1.f / 60.f;

void renderCallback()
{
	bool const interactive = true;
	stepPhysicsScene(interactive);
	//stepPhysicsImmediateModeEntireScene(interactive);

	timer += fakeDt;
	if (timer>notImmediateModeDuration) {
		if (timer > notImmediateModeDuration + immediateModeDuration) {
			// reset timer
			timer = 0;
			cout << endl << endl << endl;
		}

		stepPhysicsBall();
	}

	Snippets::startRender(sCamera->getEye(), sCamera->getDir(), 10.f, 100000.f);

	PxScene* scene;
	PxGetPhysics().getScenes(&scene,1);
	PxU32 nbActors = scene->getNbActors(PxActorTypeFlag::eRIGID_DYNAMIC | PxActorTypeFlag::eRIGID_STATIC);
	if(nbActors)
	{
		std::vector<PxRigidActor*> actors(nbActors);
		scene->getActors(PxActorTypeFlag::eRIGID_DYNAMIC | PxActorTypeFlag::eRIGID_STATIC, reinterpret_cast<PxActor**>(&actors[0]), nbActors);
		Snippets::renderActors(&actors[0], PxU32(actors.size()), true);
	}

	Snippets::finishRender();
}