Beta Ghost's Desert 2.0.3

Changes:
- material format changed to json
- broken textures fixed
- asphalt groundmodels changed to dirt (cracked sand flats, wet sand at the oasis)
- portals added to cave zones
- visible distance increased
- unnecessary hidden objects removed
- visible collision boxes hidden
- one floating rock defloated

Thx to Itntai,

changelog:
-fixed material errors (heinkelpilots/barrels).
-changed lighting a bit.
-added missing easteregg.
-cleaned up the scenetree.

-changelog 2.0.2
-fixed the game crashing when entering the cave
-added a crashed plane model
-added wrecked roamer models
-added easteregg 3
-redone the abandonned town
-minor material fixes
-minor general changes​

-changelog 2.0.1

-replaced png with dds files.
-reduced "glitter" effect on terrain materials.
-color corrections on terrain and vegetation.
-fixed cavewater.
-fixed collisions on caverocks.
-fixed an error in groundcover/materials.cs
-resized preview picture to default size.
-minor improvements/corrections.

Ghost.

forgot to flip the Depthmap, fixed.