Following on from this question `Can I use Cycles materials with Blender Internal? When following the instructions the solution worked fine but when i tried to apply it to multiple windows I came across this problem
When I render the picture (F12) as you can see the glass has no effect on the first picture and the glass can be seen through the mesh of my wall. So I added an add node and I got the effect of the glass to show but no matter what I have tried to do I still cannot get the back windows to be hidden behind the mesh of the front wall. Is there a way to solve this.