Historical Interest Only
Compaq Powerstorm 350 Stereo (9911xx)
Compaq now have a full release of their drivers for the 350 at
Just in case, there is a problem with the abovc link, the following was provided in November 1999
The following information has been provided by Richard Readings of Compaq
Check system configuration
|output from uname -a||Tru64 UNIX version|
Install appropriate graphics driver
You will need V1.4 of the PowerStorm 300/350 graphics driver
Download the driver from http://www.service.digital.com/open3d/betatest.html and install as follows:
Configure X server for optimal stereo performance
To optimise stereo rendering performance at maximum resolution
(server args are fully documented in the release notes)
To confirm that you are using the optimal screen resolution for stereo use "/usr/sbin/sizer -gr" which should return 1280x992
Recommended Video Modes for Stereo Rendering
|Resolution (WxH) (-screen)||Available refresh rates (-vsync)||Max refresh rate for Compaq P110 monitor|
|1280x992||75, 85, 90, 100, 110, 120Hz||100Hz|
|1280x1024||75, 85, 90, 100, 110, 120Hz||100H|
You need to be running O version 7 to optimize using this board in mono.Set the environment variable STEREO to MONO before running O, e.g. setenv STEREO MONO. This will prevent O selecting a stereo visual and thus having to draw everything twice (for left and right eyes).
Stereo rendering is available at 1280x1024 (omit -screen 1280x992 in Xserver.conf) but performance will be noticeably impaired.
DEC Powerstorm 4Dx0T Stereo (970721) and Sun dials (990401)
The following was provided by Richard Readings of DEC for stereo installation
You must have Open3D 4.3 or later installed.
If you have a PowerStorm 4D40T or 4D50T edit /usr/var/X11/Xserver.conf to read as follows:
! Cateye Server args start
-pn -nice -2 -bs -su -screen 800x600
! Cateye Server args end
If you have a PowerStorm 4D60T edit /usr/var/X11/Xserver.conf to read as follows:
! Cateye Server args start
-pn -nice -2 -bs -su -I -e3bpp 102
! Cateye Server args end
Then restart the X server (e.g. with /usr/sbin/xsetup).
Use xglinfo to check for stereo capable visuals, for example:
TrueColor visual: ID = 0x25 (hex) 37 (decimal) screen = 0
SINGLE buffered STEREO RGB visual with (Z Stencil Accum)
GL Sizes: RGBA=(8,8,8,0), Z=24, Stencil=6, Accum=(16,16,16,0)
Core X: depth=24, colormapSize=256 RGB: masks=(0xff,0xff00,0xff0000)
Further information on Compaq workstation stereo is available on the following URL
Carry out the following
0. get tar_lib_dec_xi_dls from o ftp on alpha2
1. install lib_dec_xi_dls.so in /usr/shlib/X11
2. connect dials to tty port ( you can check response with cat /dev/tty00 or cat /dev/tty01
and turn a dial this works in comandline login from console.
3. Modify /usr/lib/X11/Xserver.conf
! Enable X Input Devices
! Dial and Button Box on port /dev/tty01
!< _dec_xi_pcm lib_dec_xi_pcm.so XiPcmInit /dev/tty01 >
< _dec_xi_pcm lib_dec_xi_dls.so XiPcmInit /dev/tty00 >
! Serial Mouse. Use the following format for the last parameter:
! CalComp Tablet entry
! < _dec_xi_db3 lib_dec_xi_db3.so XiDb3Init
4. restart X server
SG Irix related (000004)
Patches to SGI machines to run O on Irix 6.x (010919)
SG patch updates have gone beyond my ability to keep up. I am very gratefull to Horst Vollhard at SG Basel for creating and maintaining a web page for O users that explains the present patch situation. UNfortunately, his web site is being closed down, but he has sent me the last version.
Getting the SG Dials up and running
The dial box may look as if it is not working with O under new versions of Irix OS. This is because the default is not to include them in the OS anymore.
So you need to add a subset of the operating system called eoe.sw.optinput & eoe.man.optinput. This is the Optional Input Devices software from one of the CDs.
Stereo and O (000104)
O supports 2 ways of working with stereo images. Side-by-side stereo works on all systems and and is activated with the F4 key. As the name suggests it shows two images that are adjacent to one another. It is upo to the user to fuse them into a 3D image. Some will use a negative stereo angular separation, whilke oithers will use a positive one. Both angular and spatial separations can be set with the Stereo command.
Full screen stereo is a hardware dependent system and is activated with the F1 key. Here are some machine dependent pieces of information
Stereo on Silicon Graphics Unix Workstations
O uses the stereo system developed by SG's Basel offices. They keep a special site (maintained by Horst Vollhard of SG) to describe the state of support on all currently shipping systems. If your stereo does not work, check this site.
Stereo on DEC Alpha based systems
Older alpha based systems support various quality stereo, from stero in a window on the Powerstorm 60T, to split screen on the 40T/50T etc
Stereo on Compaq XP1000/Powerstorm 350
The new generation Alpha chips are now sold under the Compaq label. The drivers have recently been improved so that the Powerstorm 350 is now an excellent choice for users that want high resolution stereo. If users want the ultimate mono performance, they need to set up the following environment variable before starting the program
% setenv STEREO MONO
Stereo will not be available, but mono will be extra quick.
Stereo on NT based systems
I have access to a limited number of machines. The systems I've seen running O in stereo are
The Silicin Graphics 320. It should work at 1024x768 or 800x600 but I've only managed to get it running at the lower resolution. Other O users report success at the higher resolution too!
Compaq 500/Oxygen GVX1 at 1280x960@100Hz. At present, the window test is not visible in one eye, for one of the three possible line types controlled by the F3 key.
Other users report stereo running on various Evans & Sutherland based cards :
From: "Oliver Einsle" <firstname.lastname@example.org>
* Evans & Sutherland AccelGalaxy 52; Stereo in 1280x1024, 100 Hz
* Evans & Sutherland Tornado 3000; Stereo in 1280x1024, 100 Hz,
presumably also 120 Hz, but I have no monitor to test that ...
* ELSA Gloria XXL, Stereo in 800, 1024 or 1280 resolutions with
* ELSA Erazor III; No stereo, but VERY cheap and fast enough to look
at structures at home ...
Windows NT/98 Specific (000104)
O requires 2 extra libraries to be loaded onto the system: OpenGL and Glut.
The OpenGL library is bundled with Windows NT 4.0. and is included in the Windows 95 OSR 2 release.
If the library is missing, get it from
GLUT libs are required, get from from
Install the glut32.dll lib
install see win32README
Also see http:/www.opengl.org/Downloads/Downloads.html