I have, over the years, writtenmoreposts on VBOs and vertexperformance in OpenGL than I'd like to admit. At this point, I can't even find them all. Vertex performance is often critical in X-Plane because we draw a lot of stuff in the world; at altitude you can see a lot of little things, and it's useful to be able to just blast all of the geometry through, if we can find a high performance vertex path.
