ATI Technologies FIRE GL1 User's Guide download pdf (Page 50)

Gamma Correction

The brightness produced at the face of the display is proportional to the input

voltage raised to the power gamma. This nonlinearity must be compensated to

achieve correct reproduction of the image's brightness. The effect of display gamma

is to darken the midtones relative to the dark and light regions. The gamma

correction adjustment affects the entire screen display. The possible setting range is

0.3 - 4.0. The default setting is 1.0.

Glide ™

Specialized gaming API developed by 3Dfx

GLINT

3D processor from 3Dlabs.

Graphics accelerator

Device the purpose of which is to increase speed in performance-demanding

graphical environments.

Grayscales

Grayscale image consists of different shades of gray (like a black-and-white

photograph). This normally means that 254 different grayscales plus black and white

(= 256) are used.

H-Sync

length of the horizontal synchronization pulse for a monitor, given in microseconds

Hardware Triangle Setup

3D pictures are computed of small triangles for a better 3D look. These triangles are

either generated by software via the CPU or by hardware acceleration for faster

rendering.

Heidi

AutoDesk's Heidi Development Kit helps developing graphics intensive software,

especially the drawing and display portion of the programming, such as render, pan,

zoom, etc.

Hercules Graphics Card (HGC)

Video adapter that provides bit mapped single color graphics.

Hexadecimal Notation

A base-16 numbering system that uses numbers and letters. The hexadecimal

sequence begins: 1 2 3 4 5 6 7 8 9 A B C D E F, then 10, 11 etc.

HiColor

Designates 15 bits per pixel or 16 bpp graphics mode, i.e. 32,768 or 65,536.

Hoops

3D software interface (3D-API) from Ihaca Software.

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ATI Technologies FIRE GL1 User's Guide Page 50