Adding soap scum to the ceramic tile's surface

Materials help to tell the story of an object's life.…Pristine textures have led ascetic lives where they've never left the confines of…your computer. Adding indications of regular use and…abuse can help sell the realism of an object.…Here are some tiles that I've rendered out and they look they've walked right off the…showroom floor. Here they are again with the addition of…some soap scum and mildew. Now, these are not as much fun to look at,…but they do tell a story. Perhaps these are tiles from a, college…student's first apartment. Gee-ross.…In this video, we're going to focus on how to add soap scum to the surface of our tiles.…

Before we do that, we have to sort of figure out what soap scum is, and for…that, we have reference imagery. Taking a look at this faucet right here, I…see that there's some white buildup on the front.…Now, I think that's probably actually a calcium deposit, but it gives me a sense…of what materials that build up because of water look like.…Underneath this, I have another example. And we can see it on the surface here of…