WebGL Nature Scene

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.

A detailed talk on most of these techniques can be found in GPU Gems I and II. The bird flock simulation is based on Boids algorithm that was introduced by Craig Reynolds.

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.