Compositing Example




Alpha-blending features:
  • Allows image to encode the shape of an object (Sprite)
  • Can be used to represent partial pixel coverage for anti-aliasing
    (independent of the final background color)
  • Can be used for transparency effects
  • Should be adopted by everyone!
    (what were you planning to do with that extra byte anyway)


Urban Botanika Text
Sprite 1

Plus Leaf Plus Sunflower
Sprite 2 and 3

equals Completed Image
Finished Composition

Lecture 2   Slide 20   6.837 Fall '01