I know it is possible, I have seen people do it. How would you go about doing the transition effect in your materials so that it became corrupt and decayed. I shall include a Youtube video from the Silent Hill film that demonstrates what I mean for those less familiar with the franchise.
Now I am fairly confident I know how to do it as a gradual fade, but I want to know more how to make it look like it is spreading from a point.
Thanks in advance.