New, better terrain system Terrain3D C++

Terrain For Godot 4

Terrain and editor written in GDScript.

Features

• Geomipmap LOD
• 256 Textures
• Double layer blending
• Anti-tiling
• Constant 19 texture lookups (16 textures, 3 maps)

TODO

• Grass/detail instancing
• Texture 3D Projection (commented out in shader for now)
• Cull texture lookups based on blend weight (reduces lookups by ~50%)
• Macro variation texture