1.9 - 法线

材质节点示例关卡概述，示例1.9: 法线。

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法线（Normal） 输入接收法线贴图，后者将打乱每个单独像素的"法线"或朝向方向，为表面提供重要的物理细节。

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在上图中，两种武器都使用了相同的静态网格体。下图显示了一个非常详细的法线贴图，其提供了更多细节，带来一种表面包含的多边形比实际渲染多出许多的错觉。 法线贴图通常是从高分辨率建模包创建的。

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