Zhuang understands TA note （ 6、 ... and ）＜FakeEnvReflect && Rust , Rust effect ＞

One 、 Homework ~ comment ：

OldSchool<Lambert+phong>== Basic lighting + Reflection .

phong= Normal direction  * Direction of sight               or         phong= Normal direction   *  Half angle reflection direction .

lambert= Light direction * Normal direction .

Realize the idea ：

1、phong= Normal direction * Direction of sight +Power.

2、lambert= Light direction * Normal direction .

3、phong + lambert = OldSchool.

Two 、 Homework ~ answer , To correct , Answering question ：

1、FakeEnvReflect( Pseudo environmental reflex )：

2、 grapes ： Reflection +

In different channels , Fill in some information and modify the way .

3、 Rust , Rust effect

         Realize the idea ：

        1、A Pseudometal

        2、B Basics Lamboort

        3、C Black and white (Stap A<B) Control noise          

        4、 Lerp （A B adopt C Switch state )

Effect of the sample ：

3、 ... and 、 intelligence ~BRDF：

1、 Bidirectional reflection distribution function ：BRDF  >> People words ：

 2、 Some others   Illumination model     slang , name .

3、 Love from Disney ：BRDF browser ：