Monster had a MAXScript for this awhile back, but I don't see it on his site, so I uploaded the script here. I also barely recall someone using Photoshop to calculate unused pixels... ?
It would be nice to have a script that calculated a dexel density ratio.. It would tell you how much of your UV layout is not scaled properly to the rest. Basically, a numbered version of eyeballing with a checker map. Not 100% necessary, but good for r&d stuff.
[ QUOTE ] I also barely recall someone using Photoshop to calculate unused pixels... ? [/ QUOTE ] I haven't used the script. When I grab a UVmap from the UV editor I'll do one that's the lines and one that fills with solid white+white lines. You can use the photoshop average filter on the resulting file and the resulting…