際際滷

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LIGHTING MODEL
  2012 7 28
       豺伎るΜ ( 伎)
谿襦
   Lighting Model
   Lighting 螳 螳
   覯 貊
   Phong  Blinn
   Cook  Torrance
   Oren  Nayer
   Ashikmin  Shirley
   Strauss
LIGHTING MODEL
螳
   覃
螳 (NORMAL)
   碁  螳?
螳
   Material
PHONG - BLINN
PHONG - BLINN
PHONG - BLINN
蠍磯蓋 覦覈
-   蟆渚 覈
-    譟磯螳
-   瑚規
PHONG - EQUATION




             覓殊牡 覦
             R 蟲
            L 覲企 螳蟾磯 螳
PHONG  BLINN EQUATION
Lighting Per Pixel (启Μ螻 螳 
 蟆曙謂)
COOK - TORRANCE
蠍 覃伎 企 
(覿  )
COOK - TORRANCE
    覈語 螳 覓朱Μ蠍磯 譟磯 譴 
   覃伎 蟇一(Roughness)襯  覦覈語  譬襯
   蠍 覃伎  
   螻磯 轟壱 讌
Lighting model
Lighting model
COOK  TORRANCE EQUATION



                           BeckMann Or Gauss
                                  ??




  覩語碁伎 糾朱 覯
覩語碁(MICROFACET)
   覓殊牡 覃伎 覩語碁伎 讌企 
   覦 企れ 覦讌襦 豢 豌襴
   企殊危瑚 覩誤伎蟆 覃伎 谿 (蟇一宏, 襷る)
   企 覩語碁伎 覦レ 蠍一 覩誤伎る朱 蟆 Torrance  Sparrow
蠍壱 螳
   覩語碁伎  觜 るジ 覩語碁伎 蠏碁殊襯 襷 螻
   E  N or L  N 朱 螻手 貉れ
覩語碁 覿
   覩語碁伎 覯  企至 願 螳襯 糾朱  
                                 Beckmann
   覩語碁伎 蟇一る   覦レ朱 覿 

                                  Gauss
 
    螳 螳 蟯企 讌朱 ろ螳  覦蟆 覲伎企 




觜 覦   語  蠍磯 觜 螳蟯 レ 螳讌
競
企Μ矧錫
OREN-NAYER
Lighting model
OREN-NAYER
   蟇一 覃伎 願鍵  Diffuse 覈
   殊ろ, 覈 螳 覦るろ 覃伎 螳讌 讌 
   Lambert 企覿  蟆
Lighting model
企殊危 覲 X
Lighting model
Lighting model
OREN  NAYER EQUATION
SIMPLE EQUATION
Lighting model
朱 讌??
   Roughness 覲企ゼ 磯 ロ蠍 伎 蟆   
   Crytek  R8G8B8 覯 るj A  Roughness Speclular襯
    
   7觜碁 Specular襦  1觜碁 Roughness 豌襴 (Specular <-> Roughtness 
     蟯螻)
APPROXIMATION 朱 豕 貊




                    From Pope Kim Blog
ASHIKHMIN-SHIRLEY
Lighting model
Lighting model
   企逢 朱誤 覈
   Ward 殊危 覈瑚骸 襴 覓朱Μ 覈語 蠍磯 ( 螳譴豺)
BRDF??
   Bidirectional Reflectance Distribution Funtion
   覃伎  磯ジ 覦 蟲
EQUATION
譬  螳蟆
Lighting model
Lighting model
   焔レ 譴 讌 朱 Lambert 覦 蟆 譬
   LOD 蟷 覲 覃 旧朱 螳豺 豢覿
STRAUSS
   襴曙願 讌蟯 襷り覲襷 螳讌螻 れ 螻朱ゼ 螻牛蠍  
    危 覈
   Phong覲企 れ C-T 覲企 覲旧″讌
Colour         覃伎 貉螳

Smoothness     襷る 

Metalness      蠍 螳

Transparency   覈
Lighting model
覈 覯殊 觚 螻襴讀 蟆壱 螻手
M=0S=0
M=1S=0
M = 0 S = 0.8
M = 1 S = 0.8
Reference
   http://www.t-pot.com
   豺伎襷蠍磯 一企 襦蠏碁覦
   http://www.gamedevforever.com/46 蟆螳覦 覯
   http://blog.naver.com./sorkelf
   蠏 -..- 譟磯 蟲蠍襷

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