QT & OpenGL lighting

One 、 Color

Light control in shaders

The color of the light 、 The color of the object     Multiply components

 

 

  Shader writing , Will be the first 0 The value of an index Read in Put it in apos

 

  After the shader pipeline has been successfully connected , Binding enables pipelining

Usage mode ？？？？？ 

  Displacement , Change to camera coordinates , tailoring

 

Two 、 Add light source

 

 

 

 

3、 ... and 、 Feng's illumination model

 

  Feng's illumination model Code implementation , Simple point light No attenuation

  Diffuse light , Normal required Calculate angle , Each vertex has a normal value

The front is The vertices , Followed by vertex normals

 anormal Normal value , Outgoing normal matrix

 normalize （ Basis, ） Change the length to 1, Unit vector , Go to one 0-1 The vector between   When less than 0 When take 0

  Highlight effect

  Reflected light and The angle between human eyes or cameras

 

  Normal vector in case of non proportional scaling

 

Four 、 texture of material

 

 

 

 

5、 ... and

6、 ... and

7、 ... and

8、 ... and

Nine