Sun Microsystems XVR-300, User Manual

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46 Sun XVR-300 Graphics Accelerator User’s Guide • June 2007
Setting Color Depth Options
When multiple windows are used in an 8-bit window system, the colors can change
as the cursor is moved from window to window. There are two methods for
avoiding colormap flash:
■
Using the
-depth 24
command option to run the window system in 24-bit mode,
■
Using
-fake8 enable
if you need both 8-bit and 24-bit visuals simultaneously.
The default is 24-bit.
When the Sun XVR-300 graphics accelerator is set to
-depth 24
, it can only run
OpenGL applications with RGBA visual.
When it is set to
-depth 8
, it can only run OpenGL applications with INDEX visual.
▼ To Use the
-depth 24
Option
1. Using the
fbconfig
command, type:
2. Log out, then log back in.
Note – 24-bit depth performance can be slower than 8-bit depth mode.
▼
To Use the
-fake8
Option
1. Using the
fbconfig
command, type:
Note –
8-bit depth performance is slower in 8+24 (
-fake8
) mode.
2. Log out, then log back in.
% fbconfig -dev nfb0 -depth 24
% fbconfig -dev nfb0 -fake8 enable