Kanition
Kanition
式子8.37交代wi为入射方向
式子8.39上方G2写错脚标
式8.54加插图说明
8.5.4节加插图说明
式子8.60、8.70、8.73、8.74三角函数\sin\theta放后面
考虑补充积分换元证明
https://math.libretexts.org/Courses/Monroe_Community_College/MTH_212_Calculus_III/Chapter_14%3A_Multiple_Integration/14.7%3A_Change_of_Variables_in_Multiple_Integrals_(Jacobians)
加回透射btdf扰动推导
```tex \usepackage[pdfauthor={Kanition},pdftitle={基于物理的渲染：从理论到实现},pdflang={CN},pdfsubject={Physically Based Rendering: From Theory To Implementation},pdfkeywords={graphics,rendering,physically-based-rendering},baseurl={https://github.com/kanition/pbrtbook}]{hyperref} ``` 增加metadata
[An Anisotropic Phong Light Reflection Model](https://users.cs.utah.edu/docs/techreports/2000/ps/UUCS-00-014.ps.gz) For > Fresnel-based reduced diffuse reflection in a physically plausible manner From #159