making texture stick to geometry in projection mapping

I am trying to do a simple explosion/destruction scene..

I have done projection mapping with three cameras left, the road and the right.

I have created a simple destruction fracture on left and placed in scene.. as below

testcomp.png (754.64 KiB) Viewed 1103 times

1. Why is it that I do not see the debris?
2. Tried to do UV camera mapping but did not work | followed tutorial at "UV camera mapping" on eyeon channel

How and where should the UV map 3d node be inserted to make the texture stick to geometry and debris?

Thanks

the first question is very simple:
your "debris" is not connected to the 3dScene you render

the first question is very simple:
your "debris" is not connected to the 3dScene you render

It is connected Michael, the one on left is the copy just to show on viewport without the catcher. The connected one is with the catcher node in the bottom left.