这个程序使用了大量OpenGL高级特效技术以产生出室外自然景观的真实感效果。 场景中有轻风吹拂绿草、在水面上产生涟漪、倒影、天空云动、地形等等。-This program uses a lot of OpenGL high-level special effects technology to produce outdoor-photorealistic effects of the natural landscape. Scene has the wind blowing grass, p