What is the method for texturing holes in walls to expose the bricks?

hallowseve

How can I replicate this texture featuring holes in walls that expose the bricks behind the stone? Should I create it on a trim sheet, utilise decals, or actually model the broken sections? As I have not attempted this before, any helpful references or tutorials would be greatly appreciated.Thanks

Eric Chadwick

An overview of the blending technique commonly used: 
http://wiki.polycount.com/wiki/MultiTexture#Modulation_Blending

Witcher 3 Blood and Wine architectural material shows a nice example.

More examples: 
http://wiki.polycount.com/wiki/Modular_environments