Elsa Erazor II User Manual

are calculated by interpolating the normal vec-
tor.

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Single buffer – By contrast with double buff-
ering, where the image buffer is duplicated, the
single buffering mode is not able to access the
next image, which has already been calculated.
This means that animations will run jerkily.

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Tearing  – A distinction is made in double
buffering between the front buffer and the back
buffer.  The image change between the front
buffer and the back buffer is synchronized in
tearing. 

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Tesselation – The objects for 3D calculations
are divided up into polygons (triangles) in tes-
selation.  The vertices, color and, if required,
transparency values, are determined for the tri-
angles.

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Textures – Wrapping a bitmap around an
object, including perspective correction, for

example wallpaper on a wall or a wood texture
on furniture.  Even a video can be used as a tex-
ture map. 

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TrueColor  – Graphics mode with 16.7 million
colors (24 or 32 bits per pixel).  In this mode, the
color information saved in the display memory
is not translated by a look-up table, but passed
directly to the D/A converter.  This means that
the full color information must be saved for
each pixel. 

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VESA  – Abbreviation of Video Electronics
Standards Association.  A consortium for the
standardization of computer graphics. 

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VRAM  – Abbreviation for video RAM.  Mem-
ory chip for fast graphics boards. 

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Z buffer  – 3D depth information (position in
the third dimension) for each pixel.