Adding a further touch of realism to a virtual environment is something that most games designers strive to achieve, and this is true in our group project too. Getting our models in to the game engine with a texture on it is only part of the process. The trouble is that the models look too new and clean, in the real world any object that is exposed to the elements of the passage of commuters through a busy train station will leave their mark in the form dirt and weathering.
To add a realistic looking effect to our models our tutor, Paul showed me how to apply a Decal material to a surface in the UDK editor. This involves creating several texture layers to gain the desired look.
Before the moss effect Decal was applied.
After the moss effect decal was applied.