Terrain & foliage optimizations

[FacoBackup]

Foliage

• Merge foliage and height map into one texture
• Batches for processing foliage types
  • Per instance store an atomic counter, transformations buffer and an indirect draw buffer
  • Batches of 3 foliage types
  • Indirect draw of foliage
  • 3 lod levels for each foliage type

Terrain: Materials & Foliage

• Custom material pipeline for terrain
  • Each material can have multiple foliage types
  • Max number of materials
  • Foliage culling samples material channels to find the matching foliage type
• Foliage 100% procedural
  • No foliage painting
  • Material dependent
  • Hash translation for rotation and scale offset