As level 4 will be in the deep forest, I figure that I would need a lot of trees and lush vegetation. I've decided to make some hi-quality decals, because FPSC X10 can't take the amount of vegetation I want without fps drops.
It works like this: I take the screen capture in game, then select and clean them in GIMP. In the following screen, only 3 trees are 3d models. The others are panes. It works very nicely, and they keep a very nice level of detail. It's the first test.
Take a look.
Another test, where it's even more difficult to find the diferences, using reflections and so. It's great for decor. The player will have the real models near him, and the others a bit far. It's not a new technique, of course, but I'm liking the way it goes. I tought of it while playing COD 5. It happens at a smaller scale, but if the best use it, why not me?