Normal mapping is the technique to replace the existing normals on model.

所谓法向线贴图是一种置换模型物件上现存法向线资料的技术.

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This is necessary for normal mapping to work.

这是法线贴图运作时所必须的.

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Figure 9. Saving normal vectors in RGB - channeled image as the source of normal mapping.

图九以RGB频道影像贮存法向量资讯的法向线贴图.

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