基于物理的渲染（PBR）白皮书】（四）法线分布函数相关总结- 知乎
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Microfacet Distribution Function: To Change or Not to Change, That Is the Question
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Advances in Real-Time Rendering in Games - online presentation
Simon's Tech Blog: Microfacet BRDF
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基于物理的渲染（PBR）白皮书】（四）法线分布函数相关总结- 知乎
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Microfacet Distribution Function: To Change or Not to Change, That Is the Question
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Advances in Real-Time Rendering in Games - online presentation
What do glossy distribution models do? - Blender Stack Exchange
Simon's Tech Blog: Microfacet BRDF
Few problems with BRDF using Beckmann and GGX/Trowbridge-Reitz distribution for comparison - Stack Overflow
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Advances in Real-Time Rendering in Games - online presentation
Perceptual quality of BRDF approximations: dataset and metrics
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