Glass material with translucent paint

[jesperlarsen]

I am looking for a way to create a glass facade with translucent paint - like a church window with a motive.

 

I have to bitmaps: one with the motive in color and one with a black/white copy of that motive to cut out areas where the glass should be full transparant. But I cannot make it work. Any guidelines are much appreciated.

 

Jesper

[John Dollus]

here's an example of a stained glass pattern that worked for me recently. I went with the blend map for the leaded dividers that also used displacement mod on the geometry. Otherwise, it's pretty straightforward.

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[jesperlarsen]

How would the setup look if I do not need the leaded dividers? (not tried blend maps before)