Rendering System for Large-Scale Grass

Grass is one of the nature elements that is difficult to render in real-time due to its geometric complexity and the large coverage area. Realistic simulation of grass is one of the challenging topics in computer graphics. In this paper, a rendering system for large-scale grass is presented and implemented. Not only does this system provide high efficient scene rendering method for grass, but also it supports extendable architecture. We discussed the general architecture of this system and the key techniques for modeling and rendering of large-scale grass. Experimental results show that this system can produce realistic grass and has interactive frame rate.

I. Introduction

Modeling and rendering of grass in natural scenes plays an important role in virtual reality and computer games. In outdoors, grass usually span entire fields in large numbers, the real-time rendering of large-scale grass with fine representing is impossible. Some methods use very sparse geometry to depict the grass, this extremely impact their believability. So far, the realistic modeling and rendering of grass in real-time is also a hot topic for graphic community, we need to search a balanced tradeoff policy between visual realism and rendering cost.