» Sat May 12, 2012 5:12 pm
RE: The snow not showing up on textures, I have to disagree with you. It definitely does, and it's pretty trick!
Check out this image of a snow scene I captured. Granted it is night time so you have to look a little closer, but if you look at the grass section to the lower left you can clearly see a light dusting appear and even some clumpier areas, plus the wood surface of the bridge:
http://i858.photobucket.com/albums/ab150/aliendiplomat/examples/snowc1.jpg
Now, compare that to this image of the same grass texture region in a daytime clear weather condition. At the lower left you see none of this clumpy lightness.
http://i858.photobucket.com/albums/ab150/aliendiplomat/examples/snowc2.jpg
Places I have also noticed this is one of the bandit forts you encounter early on near Bleak Falls. At the top of the tower is a random treasure chest, and in snowy conditions it will very clearly accumulate on the top surface. Probably for many other object types as well, so not just landscape scenery gets dusted!
I'm not up to spec on all the latest texture technologies and tricks employed, but I have a feeling it has to do with spikes in the curve values at specific points in the source image normal layer that correlate with specific lighting values used during certain weather patterns, so that the calculation comes out with these desired snow colored output patterns.
Either that or it could be possibly a tessellation DX11 thing, in which case if you didn't have a card capable of DX11 you wouldn't notice it, however my guess would be the former.