Left - Color map, Middle - Normal map, Right - Roughness map.

左——颜色贴图；中——法线贴图；右——粗糙度贴图。

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Select this if you want to see how the normal map will be applied to your texture.

如果你想了解法线贴图如何被应用到你的纹理，选择此项。

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For every texture we made, we also manually created a normal map and a roughness map.

我们在做每一个纹理的时候都手动创建一个法线贴图和粗糙度贴图。

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So, this approach requires one more layer of effort: converting the height map (or at least its visible tiles) into a "normal map" which is smooth and natural enough to be subjected to lighting effects and then displayed on screen.

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