= D =
[demoscene] What among hackers is
called a display hack. Classical effects include "plasma"
(colorful mess), "keftales" (x*x+y*y and other similar
patterns, usually combined with color-cycling), realtime fractals,
realtime 3d graphics, etc. Historically, demo effects have cheated
as much as possible to gain more speed and more complexity, using
low-precision math and masses of assembler code and building
animation realtime are three common tricks, but use of special
hardware to fake effects is a Good Thing on the demoscene
(though this is becoming less common as platforms like the Amiga
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.