Just a quick post to ask you experts
on a piece of advice on how to make
a Head Up Display, like in any regular 3d game.

Currently my problem is that i don’t know how to have 2d sprites in a 2d world (always facing the cam) on top of a 3dworld… WITHOUT having to chain renderers with a DXtexture
( cause it would be a huge performance drop…)

Any help would be deeply appreciated.

take the transformation of your camera, and use the Inverse (right input!) node to get the inverse camera transformation to move your objects in front of the camera.
i think the Perfmeter module uses this technique to have the perfmeter always in the top left cornder