Can anyone describe a technique (or point me to a good tutorial?) for simulating a pane of glass covering a picture or painting in cycles? So far, all I get is a black glass surface that blocks the image texture behind it. Someone suggested varying the IOR, but it doesn’t seem to do much. Any input would be greatly appreciated - thanks!
Recent thread on similar topichttp://www.blenderartists.org/forum/showthread.php?300514-Why-So-Dark-In-Glass-Jar&highlight=glass