当一个物体空间的法线贴图告诉一个面，它被期望接受来自物体左边的光线，它就会这样做，即使这个面实际是指向光源的。

When an object space normal map tells a face it's supposed to receive light coming from the left of the object it will always do so, even if the face is pointing away from the light source.

youdao

当一个物体空间的法线贴图告诉一个面，它被期望接受来自物体左边的光线，它就会这样做，即使这个面实际是指向光源的。

When an object space normal map tells a face it's supposed to receive light coming from the left of the object it will always do so, even if the face is pointing away from the light source.

youdao