视差贴图同样使用了这样的切线空间的概念。

Parallax mapping USES the concept of tangent space in the same manner.

youdao

因为法线贴图会被映射到表面上，所以它已经是在切线空间中了。

Because the normal map is mapped to the surface, it already lies flat in tangent space.

youdao

原始的材质贴图坐标和高度数据已经在切线空间中了，因此视向量最好也能如此。

The original texture coordinate and height values are already represented in tangent space, so the eye vector must be as well.

youdao