The scene in this sample is rendered using a pixel shader to control the ambient, diffuse, and specular contribution of each light at every pixel.

该例子的场景渲染使用了像素着色器来控制环境光，漫反射，镜面反射作用于每个像素上的各个光照。

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They then use another polarizer to reduce or diffuse any ambient light from entering that display pixel as well.

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