These two screens do a good job of showing how the patch. Before... After patch... (sorry about the size) And yeah, while it's not the perfect solution... it's a nice effort on id's part to try and do something to make the textures look better. Most other studios would've just ignored it and moved on to something else. Megatexture... isn't perfect. It's definitely got some issues. But, most of id's stuff is like that. The real light lighting and shadows in Doom 3 looked awesome, but Carmack has said over and over how bad of an idea they were.