Method fetchResults

physx/source/physx/src/NpScene.cpp:2111–2160

}

bool NpScene::fetchResults(bool block, PxU32* errorState)
{
	if(getSimulationStage() != Sc::SimulationStage::eADVANCE)
	{
		Ps::getFoundation().error(PxErrorCode::eINVALID_OPERATION, __FILE__, __LINE__, "PxScene::fetchResults: fetchResults() called illegally! It must be called after advance() or simulate()");
		return false;
	}	

	if(!checkResultsInternal(block))
		return false;

	{
		PX_SIMD_GUARD;

		// take write check *after* simulation has finished, otherwise 
		// we will block simulation callbacks from using the API
		// disallow re-entry to detect callbacks making write calls
		NP_WRITE_CHECK_NOREENTRY(this);

		// we use cross thread profile here, to show the event in cross thread view
		// PT: TODO: why do we want to show it in the cross thread view?
		PX_PROFILE_START_CROSSTHREAD("Basic.fetchResults", getContextId());
		PX_PROFILE_ZONE("Sim.fetchResults", getContextId());

		fetchResultsPreContactCallbacks();

		{
			// PT: TODO: why a cross-thread event here?
			PX_PROFILE_START_CROSSTHREAD("Basic.processCallbacks", getContextId());
			mScene.fireQueuedContactCallbacks();
			PX_PROFILE_STOP_CROSSTHREAD("Basic.processCallbacks", getContextId());
		}

		fetchResultsPostContactCallbacks();
	
		PX_PROFILE_STOP_CROSSTHREAD("Basic.fetchResults", getContextId());
		PX_PROFILE_STOP_CROSSTHREAD("Basic.simulate", getContextId());

		if(errorState)
			*errorState = 0;
	}

#if PX_SUPPORT_PVD
	{
		PX_SIMD_GUARD;
		mScene.getScenePvdClient().frameEnd();
	}
#endif
	return true;
}

bool NpScene::fetchResultsStart(const PxContactPairHeader*& contactPairs, PxU32& nbContactPairs, bool block)
{