Question Screen position fixed texture, centered on object.

I've managed to make a texture be rendered onto the screen independent of the geometry of the object, which also stays consistent in size relative to the object rather than the screen, but I would also like it to be offset by just the right amount each frame for it to remain centered on the object and not move around as you turn or move the camera.

I would appreciate any ideas, thanks in advance.

 

I would rather use distance to camera, to change scale of the texture / rays and keep reference per object space, rather than screen space.

 

I've been trying to but I can't rly figure it out

 

You can pass value of camera distance, to the shader input on the game object.

Then in shader you use that value, to scale it accordingly.