Basic Point Light Shadow Mapping finally working,
errors occured due to near plane offset for other than default direction AND default direction farplane potentially to small for other directions, for now pointlight farplane set to 2000 for testing purposes.
TODO change farplane for pointlight so that it automatically fits to the max of all direction far planes
add automatic fov calculation for directional light, then basic shadowmapping is finished
Following steps: add sampling for soft shadows, add advanced techniques for shadow mapping itself