Grass in-game can be created using a variety of techniques.
- Ryse Moss Tutorial Polycount forum thread. Tutorial about how the moss was created for Ryse.
- Grass in DOTA 2 Polycount forum thread. Discussion about how the grass was created for Dota 2.
- Hand Painted Grass Tutorial by Mark "Jenn0_Bing" Foreman. How to bake high-res grass geometry into tiled textures.
- Realistic Mowed Grass - ideas? Polycount forum thread. Realtime grass techniques for both long and short grass.
- Rendering Grass in Real Time with Dynamic Lighting from Kévin Boulanger. Research whitepaper on rendering grass efficiently for realtime use.