SH lighting is very low frequency. You can't have sharp lighting transitions with SH lights. They are also only affecting the diffuse lighting (too low frequency for specular highlights).
球面调和光只有很低的频率。球面调和光不能产生锋利的照明过渡。它们也只会影响散射光照（对高光来说，球面调和光的频率太低了）。
Lighting pass computes lighting based on depth, normals and specular power.
光照渲染基于深度，法线和高光强度计算光照。
The lighting setup for this piece consisted of a main, specular and a back light (Fig. 06).
这个场景中的照明分为主光源，反射光源和一个背光。
The lighting setup for this piece consisted of a main, specular and a back light (Fig. 06).
这个场景中的照明分为主光源，反射光源和一个背光。
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