下图演示了将法线贴图附加在低分模型上,这里你可以看见各个分量分别为表面添加了那些附加的信息。
Here the normal map is applied to the low-detail model, and you can see how each channel encodes the surface information along each axis.
例如,如果我们有一个光源从正右方照射来,我们可以只适用法线贴图中的红色分量。
For example, if we have a light source directly to the right, we can just use the red channel.
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