Parallax mapping has been a buzzword for years now.
现在，视差贴图是专门术语。
Parallax mapping USES the concept of tangent space in the same manner.
视差贴图同样使用了这样的切线空间的概念。
Parallax mapping is a computationally inexpensive, approximate 2d effect that.
视差贴图是一种计算开销不大的，近似2d效果。
Now, let's demonstrate why parallax mapping is useless in practise with a few pictures.
现在，让我们通过几幅截图来演示下视差贴图的作用有限的原因。
The process of parallax mapping requires that, for each pixel drawn, a texture coordinate, used to index one or more texture maps, be corrected by some displacement.
视差贴图技术的过程有以下要求：对每个像素都做处理中，一个贴图坐标能被多张贴图使用，并且能做一些偏移。
The process of parallax mapping requires that, for each pixel drawn, a texture coordinate, used to index one or more texture maps, be corrected by some displacement.
视差贴图技术的过程有以下要求：对每个像素都做处理中，一个贴图坐标能被多张贴图使用，并且能做一些偏移。
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