Operation (Compaq Tru64 UNIX)

Table 7-2 Supported GLX Visuals on PowerStorm 350 PCI Graphics Controller (continued)

Visual ID *

 

0x26

 

0x27

 

0x28

 

0x29

 

0x2c

 

0x2d

 

0x2e

 

0x2f

Color buffer

 

CI

 

CI

 

CI

 

CI

 

CI

 

CI

 

CI

 

CI

format

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Color buffer size

8

8

8

8

8

8

8

8

Overlay planes

 

 

 

 

 

 

 

 

 

X

 

X

 

X

 

X

Double-buffered

 

 

 

X

 

 

 

X

 

 

 

X

 

 

 

X

Quad-buffered

 

 

 

 

 

X

 

X

 

 

 

 

 

X

 

X

Z-buffer size

24

24

24

24

 

N/A

 

N/A

 

N/A

 

N/A

Stencil planes

1

1

1

1

 

N/A

 

N/A

 

N/A

 

N/A

Accum buffer size

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

X class

Pseudo

Pseudo

Pseudo

Pseudo

Pseudo

Pseudo

Pseudo

Pseudo

 

 

Color

 

Color

 

Color

 

Color

 

Color

 

Color

 

Color

 

Color

X depth

8

8

8

8

8

8

8

8

X colormap size

256

256

256

256

256

256

256

256

X RGB masks

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

X significant bits

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Visual IDs listed are for the first screen. Equivalent visuals on the second head of a dual-head configuration will have different visual IDs.

7.3.2.1Performance and Functionality Considerations

The PowerStorm 300/350 PCI graphics controllers and drivers for the Tru64 UNIX platform accelerate virtually all OpenGL Version 1.1 operations. However, some aspects of OpenGL usage can adversely affect performance. Also, the functionality of PowerStorm 300/350 graphics controllers varies among platforms. This section describes these performance and functionality considerations.

7.3.2.1.1 Texture Mapping

Several aspects of texture mapping can affect application performance. Some of these are under the control of the application user. Others are under the control of the application developer.

∙When an application defines textures to OpenGL it can explicitly specify the resolution (for example 16 or 32 bits per texel) with which textures are to be stored. Alternatively, the application can leave this decision to the OpenGL implementation. In this latter case, the PowerStorm 300/350 OpenGL driver will, by default, use 16 bits per texel for RGB and RGBA textures. The application user can override this default behavior by following the steps in Section 7.2.3.

PowerStorm 300 AGP and 300/350 PCI Graphics Controllers 7–9

Page 70 Page 72
Page 71
Image 71
Compaq 300 manual Performance and Functionality Considerations, 0x2d, 0x2f
Page 70 Page 72

300 specifications

The Compaq 300, introduced in the early 1990s, marked a pivotal moment in personal computing, combining cutting-edge technology with user-centric design. This desktop system was targeted at both business professionals and home users, reflecting the growing demand for powerful yet affordable computing solutions.

One of the main features of the Compaq 300 was its robust Intel processor. It originally shipped with various configurations of Intel's 80486 microprocessor, which provided a significant performance boost over its predecessors. The 486 architecture enabled users to run more complex applications, enhancing productivity and making it suitable for tasks ranging from word processing to graphics editing.

In terms of memory, the Compaq 300 supported up to 16MB of RAM, which was substantial for its time, allowing seamless multitasking of programs. The system typically included a 120MB IDE hard drive, which facilitated ample storage for documents and software, a critical aspect for users who needed to manage large volumes of data.

The Compaq 300 featured an integrated graphics card based on the popular VGA standard, enabling clear display quality for applications and gaming. Notably, its 14-inch CRT monitor that accompanied the system offered crisp visuals and an optimal viewing experience for users.

Another characteristic of the Compaq 300 was its expandability. The desktop came equipped with several expansion slots, allowing users to easily add components such as sound cards, network cards, or additional storage drives. This feature provided users with the flexibility to upgrade their systems as technology evolved, ensuring longevity in a rapidly changing landscape.

The Compaq 300 also showcased advanced connectivity options for its time. It included multiple serial and parallel ports, providing versatile connectivity with peripherals like printers, scanners, and modems. This adaptability was crucial, especially as businesses began to integrate more technology into their operations.

Durability and reliability were hallmarks of Compaq's design philosophy, and the Compaq 300 was no exception. Its solid construction and dependable components appealed to users who required a trustworthy system for daily tasks.

Overall, the Compaq 300 epitomized the intersection of performance, expandability, and reliability in desktop computing. Its innovative features and thoughtful design paved the way for future developments in the personal computer industry, making it a noteworthy entry in the history of computing technology.
Top Page Image Contents