The New Pipeline

• 
• Vertex Shading
  • For each vertex that is issued a vertex shader will be called
  • Simple shaders might just pass the vertex along.
  • more complex shaders will perform vertex transformations
  • And may even do some color assignment.
  • They say that applications may have several vertex shaders
  • But only one can be active at a time.
• Did it bother you that there was no looping in the vertex shader?
• Fragment Shaders
  • This is where final color is established
  • Before, we looked at fragment shaders and the lighting model.
  • Textures may be applied at this stage
  • Fragments may be thrown away as well.
• There are two other shaders we will probably not mess with
  • Tessellation shaders
    • Immediately follow the vertex shader
    • Can change the way an object is tessellated (Level Of Detail)
  • Geometry Shaders
    • Immediately follow the tessellation shaders
    • Allow the changing of geometric primitives.
• Other Pipeline stages.
  • Primitive Assembly
  • Clipping
  • Rasterization
  • Final Assembly (or per-fragment operations)