Unix pipes are perhaps the purest expression of this idea:
Dithering in its simplest form can be understood by observing what happens when we quantise an image with and without modifying the source by random perturbation. In the examples below, a gradient of 256 grey levels is quantised to just black and white. Note how the dithered gradient is able to simulate a smooth transition from start to end.，更多细节参见快连下载安装
scene.add(light);，详情可参考safew官方版本下载
Distort reality
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