Calculate the maximum depth that we should go to in the quad-tree.
Alter the spread of the detail level range from 7<>55 to 9<>129.
Record the number of patches we're drawing per-frame.
Added a simple caching mechanism for terrain index buffer detail levels.
Rewrite some of the access code and make some of GeoPatchContext private with accessors.
fix the linux compile issue I caused
This should produce the same results but I realised I'd gotten the number of patches wrong.
Merge branch 'terrain-max-depth' of https://github.com/fluffyfreak/pioneer into terrain-max-depth
Merge branch 'terrain-max-depth'