This section includes information on the PersonalVRX (PVRX)
and TurboVRX (TVRX) graphics devices.
Supported Visuals |
 |
The following visuals are supported:
Depth 3 (overlay and combined mode)
Depth 4 (overlay and combined mode)
Depth 8 (image and combined mode)
Depth 12 (image and combined mode, TVRX only)
Depth 16 (Creates a double-buffer version of the
Depth 8 visual)
Depth 24 (image and combined mode, TVRX only)
None of these visuals support DBE and MBX double-buffering.
In image mode the default visual is the Depth 8 PseudoColor
visual. In overlay mode it is the depth 3 or depth 4 PseudoColor
visual as specified by the device file. In combined mode the first
device file specifies the default visual. Examples are shown in
the section below.
VRX Device Files |
|
Different device files exist for the image planes and overlay
planes on VRX devices. The following table shows examples of device
files for VRX devices:
Table 4-4 mknod
Information for HP-UX 9.x
Device Filename | Major Number | Minor Number | Description |
|---|
/dev/crt | 12 | 174 | Image mode |
/dev/ocrt | 12 | 174 | Overlay mode (3 planes) |
/dev/o4crt | 12 | 174 | Overlay mode (4 planes) |
The X server supports three different modes of operation on
VRX devices: image, overlay and combined.
In image mode, the X server runs only in the image planes.
This is the default on VRX devices. To operate in image mode, the
image device file should be specified as the primary screen device.
For example:
In overlay mode, the X server runs only in the overlay planes.
Since only 3 or 4 planes are available in the overlay planes on
VRX devices, the number of colors is very limited. To operate in
overlay mode, the overlay device file should be specified as the
primary screen device. For example:
/dev/ocrt # Overlay mode using 3 overlay planes
or
/dev/o4crt # Overlay mode using 4 overlay planes |
In combined mode, the X server runs in both image and overlay
planes. To configure the X server to operate in combined mode, a
primary and a secondary device must be specified. The VRXSecondaryDevice
is used for this purpose. For example:
/dev/ocrt /dev/crt # default visual lives in overlay planes
or
/dev/crt /dev/ocrt # default visual lives in image planes |
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