
The Shader Effects have a noticeable influence on the frame rate. The Region-specific option for Terrain Textures colors the terrain and vegetation to match the region, for example, the Blue Ridge Mountains actually look blue instead of green.

You can also choose the vegetation density, and decide whether or not trees and bushes should throw shadows. The dialog warns you about the memory consumption, which can climb to 8GB. In the Scenery Layers section you can decide whether FlightGear shows you Pylons and Power lines and objects such as barns ( Scenery Objects), based on a database, and also adds Random Scenery Objects to the landscape. Figure 2: The Rendering Options allow you to adapt FlightGear's resource consumption to an acceptable frame rate on your system.
