Claudia Herbst-Tait
Professor
Pratt Institute
Department of Digital Arts


Creating Dirty Glass...

Some of your projects may call for dirty glass; here's how to dirty it up. I am using the "vase.mb" file
we used in class but replaced the vase with a simple cube that I flattened (sort of like a window...)
You can do the same or start a new scene from scratch.

Either way, apply the following image (figure1) to a bilnn glass material's color input. (We'll talk in
class about some Photoshop techniques for painting dirt...)


Figure 1



Now apply the following image (figure 2) to the blinn's transparency input.


Figure 2



Render the image -- it should look something like figure 3. Looks like this thing needs to be cleaned!


Figure 3