Sun Microsystems XVR-1200, Installation And User Manual

Page: 55 / 90

Chapter 5 Using Sun XVR-1200 Graphics Accelerator Features 35
Setting Up Two Video Streams Over One Large
Frame Buffer
This enables two monitor support without the use of Xinerama software. This means
that the Sun XVR-1200 graphics accelerator creates one wide (or tall) frame buffer,
displayed across two screens.
To set up two video streams over one frame buffer, do the following:
1. Enable both streams, sharing a single frame buffer. Type :
■
Use the
-doublehigh
option for displays that are set one above the other
(rather than side-by-side as for the
-doublewide
option). Both monitors must
have the same resolution (selected in Step 2).
■
Use the
-outputs swap
option to reverse the positions of the two outputs
relative to each other. The default is
direct
. Both monitors must have the
same resolution.
■
Use the
-offset
option to adjust the position of the specified stream by the
value specified.
-offset xval yval
This is only implemented in
-doublewide
and
-doublehigh
modes. For
-doublewide
,
xval
is used to position the rightmost stream. Negative is left
(overlaps with the left stream). For
-doublehigh
, the
yval
is used to
position the bottom stream. Negative is up (overlaps with top stream). The
default is [0, 0].
2. Set the desired screen resolution. Type:
host%
fbconfig -dev jfb0 -doublewide enable
host% fbconfig -dev jfb0 -res 1280x1024x76