DFI AGP-7410, Руководство пользователя

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AGP-7410 Graphics Card User’s Manual
Glossary of 3D Features
Alpha Blending - using the alpha component to proportionally weight
the intensity of an object in the summation of all objects within a pixel.
When done correctly, alpha blending can simulate transparency.
Antialiasing - an algorithm to remove the distracting effects of point
sampling a signal in the digital domain. This is necessary because some
of the frequencies present in the signal may be higher than half the
sampling rate. These frequency components "alias" as lower frequency
signals, and show up as "jaggies".
Bilinear Interpolation - an interpolation between four values when
fractional deltas are known in the vertical and horizontal direction.
The horizontal delta is used as the weighting factor to average the
top left and top right values to determine the top, and the bottom
left and bottom right to determine the bottom. The vertical delta is
then used as the weighting factor between the top and bottom value
to calculate the final result.
Direct Memory Execution (DME) - DME is a technique that allows
the graphics accelerator to store and execute textures in system
memory instead of local graphics memory. This provides high levels of
performance and unlimited texture sizes.
Double Buffering - refers to maintaining two separate frame bufffers
(which may physically occupy the same RAM devices). This implies
performing display refreshes from one buffer, while the rendering is
accessing the other one.
Mip Mapping - Mip comes from the Latin, multum in parvo, meaning
many things in a small place. Mip maps contain the original bitmap,
and all successively lower levels of detail. These are usually created by
filtering the original map, decreasing its size by powers of two in both
directions.
Parallel Data Processing (PDP) - PDP contributes to the
HyperPipelined 3D architecture. This is a method of parallelizing 3D
operations allowing several commands to be executed at the same
time in the graphics pipeline. This translates into consistent high-perfor-
mance regardless of the number of features enabled in a scene.