Tech-source GFX 400 Series Instrukcja Użytkownika Pobierz pdf (Strona 33)

5-1

Chapter 5

ADVANCED FEATURES

5.1 Overview

The GFX 400 card has several advanced features available

through the X Server. They are:

• 8+24-bit simultaneous visuals

• Off-screen pixmap caching

• OpenGL support via Sun’s DPA extension

5.2 8+24 Simultaneous Visuals

The 8+24 mode simultaneously supports 8 and 24-bit visuals.

This addresses the classic colormap flashing issue with a 24-bit

visual while providing the 8-bit visual that is required by some

legacy applications, such as SoftWindows.

The available visuals are PseudoColor and TrueColor.

PseudoColor is the default visual.

5.3 Cached Pixmaps

All GFX 400 Series cards support off-screen pixmap caching.

Cached pixmaps are those that are stored in the off-screen

memory. These off-screen pixmaps allow faster transfer rates to

and from on-screen windows.

The available off-screen memory depends on the amount of

video memory, the current resolution, and depth settings. For

example, consider the GFX 450 card, which has 32MB of video

memory.

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Tech-source GFX 400 Series Instrukcja Użytkownika Strona 33