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
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
Heightblend is one way to go for this type of effect, also it will depend on requirement too like sculpting unique wall sections with high low poly bake and using tileables