GGX | dontnormalize
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Specular highlight - Wikipedia
Toolbag 2 is on Steam! | Marmoset Toolbag 2 | News & Announcements - Page 18 — polycount
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LearnOpenGL - Theory
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PBR理论体系整理（一）：基础理论- SZ神庙-SZ神庙
Few problems with BRDF using Beckmann and GGX/Trowbridge-Reitz distribution for comparison - Stack Overflow
Physically Based Shading and Image Based Lighting | Trent Reed
Advances in Real-Time Rendering in Games - online presentation
Simon's Tech Blog: Microfacet BRDF
Physics-based rendering—more precise micro-surface distribution function GGX - Programmer Sought
Spectacular Specular LEAN and CLEAN specular highlights Dan
GGX Lighting Model
LEAN Mapping Marc Olano, Dan Baker Firaxis Games. - ppt download
基于物理的渲染（PBR）白皮书】（四）法线分布函数相关总结- 知乎
Accurate Analytic Approximations For Real-Time Specular Area Lighting
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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What do glossy distribution models do? - Blender Stack Exchange
Simon's Tech Blog: Microfacet BRDF
基于物理的渲染（PBR）白皮书（四）：法线分布函数相关总结- GameRes游资网
Advances in Real-Time Rendering in Games - online presentation
Perceptual quality of BRDF approximations: dataset and metrics
Microfacet Distribution Function: To Change or Not to Change, That Is the Question
Spectacular Specular LEAN and CLEAN specular highlights Dan
Microfacet Distribution Function: To Change or Not to Change, That Is the Question
