TA notes of Zhuang understand (VII) < Lambert + Phong + shadow + 3evcolor + Ao >

Zhuang understands TA note （ 7、 ... and ）< The effect of ambient light on illumination >

One 、 Monochromatic ambient light affects :1ColAmient

Two 、ShaderForge Trichromatic ambient light affects ：3ColAmbient

New node ：

Comonent Mast（ Component mask ）：

Subtract( subtract )：

Realize the idea ：

1、 Based on normal , utilize CompMask Conduct RGBA layered .

R: Left and right axis

G: Up and down axial direction

B: Front and rear axial direction

Corresponding ：

Realize the idea ：

1、 Through the three directions of the normal , Up and down , about , The side In three directions Ambient light simulation .

adopt Comp Mask node , collection G Green channel , Get the direction information of the upward normal .

And put Upward Masks and One Color Multiply colors . After multiplication, the pixel information in the other three directions is superimposed .

2、 adopt  -1 and   The green channel of the normal Multiply , Get a downward normal mask , Downward normal mask with a Color Multiply colors , Get under control Downward ambient color control .

3、1 reduce   Upward mask , In subtraction   Downward mask , obtain   Side normal mask , The normal mask on the side lies in a Color Multiply colors , Get under control   Ambient light color control on the side .

  Realization effect ：

3、 ... and 、ShaderLab Trichromatic ambient light affects ：

Four 、ShaderForge Projection effect ：

 

5、 ... and 、ShaderLab Projection effect ：

6、 ... and 、 Past technology integration ：OldSchool+:

  Mixed OldSchool Effect display . 

 

 

7、 ... and 、 Schoolwork and Practice ：