Displacement map is a technique which works hand in hand with bump mapping and normal mapping in-which you use height mapping to give a certain desired effect over the geometry, it pushes out the surface texture to give a greater sense of depth and adds extra detail.
This technique I think will really help my scene come to life with this added extra depth, I added this to my stone floor material in UDK with a simple set-up using a bump offset expression and while combining both the diffuse texture and normal map.
Comparison shown below, with bump offset and without.
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| Without displacement map |
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Displacement Map
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| Both in UDK game editor |
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