A vegetation placement and rendering system from Awesome Technologies.
The system allows you to use your existing trees (from SpeedTree, Tree Creator and other tools), rocks and grass textures.
Rendering is done with Unity’s new Instancing and Instancing Indirect system. Vegetation Studio is said to be compatible with most vegetation shaders that support instancing.
A graphics card with Shader Model 5.0 is required for full functionality.
Check out this website for more details.