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Additive vs Shadebob - What's the difference?

additive | shadebob |

As nouns the difference between additive and shadebob

is that additive is while shadebob is (demoscene|computer graphics) a type of bob (graphical sprite-like element) rendered additively on the display, so that it blends with others but can be easily removed again by decrementing the colour value at each pixel.

additive

English

Adjective

(en adjective)
  • (mathematics) Pertaining to addition; that can be, or has been, added.
  • over addition.
    • Matrix multiplication is additive in that M\vec v+M\vec w=M(\vec v+\vec w).
  • (algebra) Having addition as an operator.
    • It is natural to look at a finite cyclic group as an additive group.
  • (chemistry) Pertaining to chemical addition.
  • (genetics) Describing genes (or the interaction etc. of such genes) which govern the same trait and whose effects work together on the phenotype.

    • Antonyms

    * subtractive

    Derived terms

    * additive function * additive inverse * additive identity * additive group * additive color

    Noun

    (en noun)
  • A substance added to another substance or product for its ability to alter its properties.
    • Oil may be used as an additive in gasoline to improve the lubrication of a small engine.
  • (grammar) A word or phrase that adds something, such as also'', ''even'', or ''nor .

    • External links

    * * ----

    shadebob

    English

    Noun

    (en noun)
  • (demoscene, computer graphics) A type of bob (graphical sprite-like element) rendered additively on the display, so that it blends with others but can be easily removed again by decrementing the colour value at each pixel.
  • * 1999 , "JT Liimatta", The Party compo rules.'' (on newsgroup ''comp.sys.ibm.pc.demos )
    • If I made a shadebob routine, which ran 60Hz on PentiumIII 550Mhz on 320x200x8bit mode, would you be impressed?
  • * 2007 , "milkfilk@gmail.com", Why are shadebobs and 2d alpha blends so convincing?'' (on newsgroup ''comp.graphics.api.opengl )
    • Even on older hardware, the dithering is perfect. The effect is convincing. You can press your face up against the screen and see no edges, you can see wonderful curves and strange shapes out of shadebobs that are probably unintentional.