gl.GroundQuad

[Argh]

gl.GroundQuad won't draw, if the map geometry is hidden. Yet the heightmap is there... why is that?

Also, it appears it's rebuilding the vertexes constantly, instead of shrinking / growing the texture coordinates used. Couldn't it be written to a display list at whatever the max size will be, and just adjust the texcoords via a shader?

Sorry if the above seems strange, but I'm fairly certain it can be done very cheaply, at least for a one-way ride. I'll probably get around to messing with doing that via Lua at some point.