Grass with a customized distribution over the terrain surface depending on the angle of the slope. The greater the slope angle the smaller the size and density of the grass up to its absence.

Demonstration of the work: https://youtu.be/ADMKQcz4Vvs 

– the model is made using Corona Scatter (Corona 3.2). The archive contains screenshots of the plugin settings. In the new versions everything is automatically converted to Chaos Scatter and works without problems.
– does not require additional UV coordinate settings for the terrain. Everything is projected using procedural maps (Falloff Noise CoronaTriplanar).
– distribution of objects in the scatter – Count Per Square.
– there is a plain with relief textures in the scene which also change depending on the angle of the slope.
– All textures materials and objects have unique names.
– in OBJ format only objects of grass flowers and mountain terrain.

Files:
– 3ds Max 2015 file (max) Corona 3.2
– Materials file (mat)
– Textures files (jpg)
– OBJ file (obj)

Polys: 6 226
Verts: 11 770

For Corona render it is recommended to install a version at least 1.5 since the glossiness of the materials is configured with PBR in mind.