Since any parallax effect depends on point of view, a vector from a point on the surface to the eye is required.

因为任何视差效果都依赖于视点，所以就需要一个从表面到视点的向量。

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This simplification keeps textures looking good at shallow angles, but it also reduces the parallax effect, which isn't as bad as it sounds.

这样的简化可以让贴图在低视角的时候看起来比较好，但是这也会也减少视差效果，不过这并不像它听起来这么糟。

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When placed in front of an LCD, the screen creates a sense of depth using the parallax effect (each eye views an object from a slightly different Angle).

如果在液晶显示器前面安置这种屏幕，由于视差效果(每只眼睛从稍微不同的角度看物体)的缘故，就会产生一种立体层次感。

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