1. OpenGL Graphics Pipeline

• Vertex Processing

  • Coordinate transformations

  • Compute color for each vertex

• Clipping and Primitive Assembly

  • Assemble sets of vertices into lines and polygons

  • Clipping volume culls out geometry outside, and clips geo that straddles

• Rasterization

  • Determine which pixels are inside each polygon (primitive)

  • The output is a set of fragments for each primitive

• Fragment Processing

  • Fills in the pixels in the frame buffer -- what's visible on the screen