Scale according to depth pass

[lordjim]

Hi

I have an image from 3D and a depth pass. I've created a noise node and want to have it bigger in the foreground and smaller as it goes into the scene (according to the depth pass)... anyone got any ideas of how to do this without putting the noise on a card? 

[fxnurbs]

you could try having a big noise and a small noise then keymix them through your depth, but it will not be as clean than a real one
if it is a simple comp you can cornerpin the noise or warp it.
but the card would be the proper way i am afraid