Efficient Glossy Global Illumination With Interactive Viewing
http://brahms.di.uminho.pt/discip/MCGAV/ifr0304/Artigos/Hanrahan91-HierarchicalRadiosity.pdf
https://docs.unity3d.com/Manual/GI-Enlighten.html
https://blogs.unity3d.com/cn/2019/07/03/enlighten-will-be-replaced-with-a-robust-solution-for-baked-and-real-time-giobal-illumination/
https://blog.uwa4d.com/archives/Study_unreal4_Rendering_4.html
https://blog.uwa4d.com/archives/USparkle_Bake_scene.html
https://docs.unity3d.com/Manual/LightingGiUvs-GeneratingLightmappingUVs.html
https://docs.unity3d.com/Manual/FBXImporter-Model.html
https://blog.uwa4d.com/archives/Study_unreal4_Rendering_4.html
https://zhuanlan.zhihu.com/p/71513708
https://zhuanlan.zhihu.com/p/34477578
