贴图

Meanwhile, the scenes of rain, snow, fire flame and explosion are simulated livingly by means of particle system and dynamic texture mapping.

同时，利用粒子系统纹理贴图的方法实现了雨、雪、火焰爆炸效果的模拟。

Resize and move your texture into a suitable place and then desaturate it.Change the blending mode of your texture layer to overlay.

重新调整尺寸然后把你的贴图移到适合的位置覆盖背景。

As mentioned above in the directional lights section, the rendering of shadows for directional lights is an approximation that allows us to use a single render to cover a largeish area with shadows.

你也可以用着色语言作为技术的实现基础来处理投射体接收体的材质来实现更复杂的算法，比如实现支持自投的深贴图。