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Glossary
37
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ELSA GLADIAC
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EN
Glossary
쎲
3D –
Three-dimensional.
쎲
3D clipping –
A process within
geometric transformation in which
invisible areas or portions of a 3D object
are removed.
쎲
3DNow!
Extended command set used by
AMD in the K6-2, K6-3 and K7 processors.
21 additional commands are intended
above all to accelerate the floating-point
operations that are especially important
for 3D games.
쎲
3D pipeline –
The sum of all steps
required in displaying an imaginary 3D
scenario on the monitor. Included in this
are
➞
Tessellation,
➞
Geometric
transformation and
➞
rendering
쎲
Aliasing –
The well-known staircase
effect. There is often a jagged transition
between adjacent pixels when displaying
slanted or curved lines. The rough
transitions can be smoothed using anti-
aliasing.
쎲
Alpha-blending –
Supplementary
information per pixel for generating
transparent material.
쎲
Anisotropic filtering –
This is a mixture
of bilinear filtering and MIP mapping.
Unlike trilinear filtering, however, the
geometry of objects is also taken into
consideration, to improve the legibility of
text on angled surfaces, for example. In
trilinear filtering the filtering action is
uneven due to the stronger filtering of
foreground pixels because of perspective
distortion.
쎲
Back buffer –
Describes the image area
that is constructed in the background
within the frame buffer during
➞
double
buffering.
쎲
Back-face culling –
Leaving out
invisible areas.
쎲
Bilinear filtering –
Calculates the
average color value on the basis of four
neighboring pixels.
쎲
BIOS –
Abbreviation for basic input/
output system. A code stored in the
computer's memory (ROM), which carries
out the self test and various other
functions when the system is started.
쎲
Bump mapping –
A technique that
provides textures with depth information,
which can be applied to display relief or
embossed structures.
쎲
Bus system –
A system of parallel
conductors for transferring data between
individual system components, especially
to expansion cards, such as ISA or PCI bus
cards.
쎲
Chrominance –
Black/white
information in the transfer of video
signals.
쎲
Clipping –
In clipping, the invisible
portions of the polygon are determined for
representation. Then, these portions are
not displayed.
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