BSDF/BRDF是一种描述光线打到表面后散射现象，从而描述物体的表面性质的物理概念。
Phong/Blinn-Phong是一种基于经验的BSDF模型，之后学习的比如Diffuse(Matte),Glass,Mirror等等是一些，基于物理的BSDF模型。
Phong/Blinn-Phong模型对物体表面的建模不基于物理，所以可能导致能量不守恒等问题。
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This reply was modified 4 years, 9 months ago by
slongle(助教).
