Windshield wipers rain system.

Hello. I want to add rain drops on windows of my car. I want to use texture with changing offset to make simple animation of the drops. But the problem is in windshield, how could i make this effect on animated texture, when my wipers are ON? Make some parts of the texture invisible (i posted an image).


Is it possible, or is there any other solutions?

Rain FX Pack - Cloud and Hail Weather VFX