The Cloudy-Mountains lie,
See the Chille-River pass by,
Like a big dome is the sky,
Covering the prairie nigh.
The lofty sky is deeply blue,
The vast wildness not seen through.
The wind lowering grass in green,
Sheep and cattle are easily seen.

---- A folk rhyme from the North-Dynasty, China

Introduction

This is a technical demo based upon NVIDIA's Nature demo project. It is an effort to integrate some interesting shader based rendering techniques to present realistic-looking nature scene on web using Javascript and WebGL. The techniques applied in this demo include:

• Multi-layered Terrain
• Waving Grass with Countless Blades
• Realistic Water Simulation with Reflection and Refraction
• Dynamic Cloudy Sky Dome
• Flying Birds with Flocking Behaviour

Controls:

• Use the arrow keys or W, A, S, D to move around.
• Drag the mouse to change the orientation of the camera.
• Press B to toggle display of the bounding boxes of the terrain cells.
• Press T to toggle display of the statistic panel.

You should have a WebGL enabled browser to run this demo. More screenshots can be found here.