Esben, Fantastic! I wasn't aware that nVidia quadro cards could do this. That provides a compelling reason to purchase nVidia Quadro cards for passive stereo under Linux.
For the record: to configure passive stereo using the quadbuffer API with a Quadro card under Linux, XF86Config needs to be configured as follows: Option "TwinView" Option "TwinViewOrientation" "Clone" Option "Connectedmonitor" "CRT, CRT" Option "MetaModes" "1024x768,1024x768" Option "Stereo" "4" This approach should work great with existing versions of PyMOL. You'll only need the new PyMOL build if you are using a non-quadro graphics card to drive your geowall. Cheers, Warren -- Warren L. DeLano, Ph.D. Principal Scientist . DeLano Scientific LLC . 400 Oyster Point Blvd., Suite 213 . South San Francisco, CA 94080 USA . Biz:(650)-872-0942 Tech:(650)-872-0834 . Fax:(650)-872-0273 Cell:(650)-346-1154 . mailto:war...@delsci.com > -----Original Message----- > From: pymol-users-ad...@lists.sourceforge.net > [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of > EPF (Esben Peter Friis) > Sent: Monday, October 17, 2005 2:23 PM > To: Warren DeLano > Cc: pymol-users@lists.sourceforge.net > Subject: RE: [PyMOL] Geowall Testing > > > Ahaaaa... > > That make things a bit clearer :-) We do have a geowall, but > the Linux driver supplied by Nvidia directly supports sending > the left and right images of the quad-buffered stereo to the > two separate video heads on the card, which are then > connected to the two projectors. This eliminates the need for > the very expensive active-to-passive stereo converter. This > do require a Quadro-card, though. It is not supported by the > cheaper GeForce cards. > > I think the Linux driver also support the type of stereo you > mention here: Making a kind of side-by-side stereo, which is > then converted to "real" stereo by doubling the desktop > width, and splitting desktop between the two heads. I haven't > tried, but I guess that is also supported by the GeForce > cards. If it is not too difficult, I'll give it a try! > > I would argue that even though you can save a few hundred > bucks (difference between a Quadro and a GeForce card), the > Quadro card solution is easier. A Quadro FX 1300 card is > around for about $300-400, which is still small compared to > the Geowall system. But for Mac (and maybe Windows?) users, > this driver option may not be available. > > > Cheers > > Esben > > > -----Original Message----- > From: Warren DeLano [mailto:war...@delsci.com] > Sent: Mon 2005-10-17 22:43 > To: EPF (Esben Peter Friis) > Subject: RE: [PyMOL] Geowall Testing > > Esben, > > If that is the case, then you don't actually have a "Geowall" > -- you have a professional stereo device setup that converts > the active-stereo signal sent from the nVidia cards into a > passive-stereo signal for the two projectors. That's > equivalent to QBS stereo on a CRT with glasses, but typically > costs quite a bit more (as much as $50k USD) > > Geowalls are a low-end alternative the geologists came up > with a few years back. Instead of requiring a stereo-capable > video card, they use a normal (not necessarily > stereo-capable) dual-headed video card to drive two > projecters straight from the PC. > > That can bring the cost down to under $5k total, but it means > that the software needs to draw the complete image twice, > including the GUI, hence these changes. > > Cheers, > Warren > > -- > Warren L. DeLano, Ph.D. > Principal Scientist > > . DeLano Scientific LLC > . 400 Oyster Point Blvd., Suite 213 > . South San Francisco, CA 94080 USA > . Biz:(650)-872-0942 Tech:(650)-872-0834 > . Fax:(650)-872-0273 Cell:(650)-346-1154 > . mailto:war...@delsci.com > > > > -----Original Message----- > > From: pymol-users-ad...@lists.sourceforge.net > > [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of EPF > > (Esben Peter Friis) > > Sent: Monday, October 17, 2005 1:30 PM > > To: Warren DeLano > > Cc: pymol-users@lists.sourceforge.net > > Subject: RE: [PyMOL] Geowall Testing > > > > > > I'll try it when I get back to work tomorrow - but I'm a > bit confused > > :-) The features you mention, haven't they been part of PyMOL for > > some time already? We have active stereo glasses for our > workstations, > > and use the same PyMOL version > > (0.99beta14) for those and the Geowall. > > > > > > Cheers, > > > > Esben > > > > > > -----Original Message----- > > From: Warren DeLano [mailto:war...@delsci.com] > > Sent: Mon 2005-10-17 22:06 > > To: EPF (Esben Peter Friis) > > Subject: RE: [PyMOL] Geowall Testing > > > > Esben, > > > > Great! > > > > Added: support for the internal gui, pop-up menus, sequence viewer, > > and command line when using a passive stereo setup (versus active > > stereo setups that cost about 10X more). > > > > Can you try the build at http://delsci.com/beta? > > > > Cheers, > > Warren > > > > > > > > -- > > Warren L. DeLano, Ph.D. > > Principal Scientist > > > > . DeLano Scientific LLC > > . 400 Oyster Point Blvd., Suite 213 > > . South San Francisco, CA 94080 USA > > . Biz:(650)-872-0942 Tech:(650)-872-0834 . Fax:(650)-872-0273 > > Cell:(650)-346-1154 > > . mailto:war...@delsci.com > > > > > > > > > > > > ________________________________ > > > > From: EPF (Esben Peter Friis) [mailto:e...@novozymes.com] > > Sent: Monday, October 17, 2005 12:58 PM > > To: Warren DeLano > > Subject: RE: [PyMOL] Geowall Testing > > > > > > > > > > Yep - we have one, which we use mostly for PyMOL > presentations > > :-) > > Stereo already works great, so I'm curious what you have in > > mind. The computer connected to it is running Linux (Fedora Core 2) > > and uses an Nvidia Quadro 750GLX card. > > > > > > Cheers, > > > > Esben > > > > -----Original Message----- > > From: pymol-users-ad...@lists.sourceforge.net on behalf of > > Warren DeLano > > Sent: Mon 2005-10-17 16:27 > > To: pymol-users@lists.sourceforge.net > > Subject: [PyMOL] Geowall Testing > > > > PyMOL Users: > > > > Regarding "geowalls" [also known as dual-projector passive > > stereo setups > > that use polarized lenses & glasses to deliver > low-cost stereo > > 3D to > > large audiences]... > > > > Does anyone have one set up right now who might be able to > > test a new > > PyMOL build with improved geowall stereo support? > > > > Cheers, > > Warren > > > > -- > > Warren L. DeLano, Ph.D. > > Principal Scientist > > > > . DeLano Scientific LLC > > . 400 Oyster Point Blvd., Suite 213 > > . South San Francisco, CA 94080 USA > > . Biz:(650)-872-0942 Tech:(650)-872-0834 > > . Fax:(650)-872-0273 Cell:(650)-346-1154 > > . mailto:war...@delsci.com > > > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by: > > Power Architecture Resource Center: Free content, > downloads, > > discussions, > > and more. http://solutions.newsforge.com/ibmarch.tmpl > > _______________________________________________ > > PyMOL-users mailing list > > PyMOL-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/pymol-users > > > > > > > > > > > > > > > > > >
