X-Plane is incredibly extensible. You can simulate new aircraft, make 3-D models, or even change the functionality of the program in drastic ways.
X-Plane has always shipped with the shaders visible to everyone as plain text in the Resources/shader directory. Partly this was due to making it convenient to load the shaders into OpenGL itself, but we also don’t have anything to hide there either so it doesn’t make much sense to try to hide them. Read More