well what I want to say is, that it really is a good thing to create your own 3d engine, but do it the way Zaei does it.
He uses the good tools he is given and improves what he needs to improve. there is no need to try to improve on some of the kernel things of DX, because they have been optimized for years now and they are always up to date with the newest hardware...

could anyone here explain me what a designer really is?