-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Robert,
Robert Osfield wrote: > Hi All, > > Just caught up with the overnight discussion of frustration with > NVidia's artificial restriction of stereo support in OpenGL. > Personally I think that NVidia is hurting OpenGL and the stereo > graphics market because of this position. > > The long solution term to this artificial driver restrictions has to > be fully featured open source drivers across all platforms, then > finally we'd have the ability to go and solve problems directly. > Perhaps Gallium3D might eventually be our savior: > > http://www.tungstengraphics.com/wiki/index.php/Gallium3D > > Having competitive open source drivers would also raise the pressure > on proprietary driver developers to deliver good stability, > performance and all the features that the hardware is capable of. The main issue is that you cannot have open source drivers without documentation, the framework doesn't really matter so much. Reverse engineering NVIDIA hardware is perhaps possible for a highly dedicated team of experts with top notch equipment, but completely unrealistic otherwise. And NVIDIA is not keen on opening up their documentation - even after their main competitors did so. Even if the documentation was in place (ATI, Intel), that doesn't guarantee a high-quality driver. Intel driver is out in the open for a long time and it is quite terrible these days. There is also the Via Chrome driver and it is quite bad as well, despite being open source - and I am not speaking about OpenGL support here, only basic stuff like not crashing your system. Furthermore, it will always play catch up because the development can start only when the hardware is on the market already. By the time the open driver is developed, the hardware would be obsolete. So while open source drivers are a nice idea, for a market dominated by one major player that keeps everything as closed as they can it is a non-starter, in my opinion. The only way forward is to actually put economical pressure on the company - when they see that they are losing business due to their boneheaded decisions, they will do something about it. Unfortunately, stereo is such a niche market that unless a huge customer weighs in, it is not likely going to happen. And those probably do not care about GeForces - the cost of few Quadros would be a drop in the sea in the overall costs of their projects. So I am not optimistic here. Whenever developing something for stereo these days, I am focusing on passive stereo that can be done with any graphic card. It doesn't have quad buffer, but that is not such a big deal for these applications. If shutter glasses or HMD requires sequential signal, then the blue line stereo is good enough (and cheap) hack - it would be good to have it supported in OSG, btw. Regards, Jan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mandriva - http://enigmail.mozdev.org iD8DBQFKE/Fmn11XseNj94gRAtpuAKCdkCExklHT+57dYWWG9VcZvFj8NwCgmgb9 zTY0754C/1WEDETuGFELGKU= =3FaB -----END PGP SIGNATURE----- _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
