Hi J-S, On Thu, Apr 3, 2008 at 4:43 PM, Jean-Sébastien Guay < [EMAIL PROTECTED]> wrote:
> The "absence" of this option has made no difference in the fact that it > all works great on Vista. I never liked Horizontal Span anyways, for the > issues others have brought up (taskbar way too long, windows pop in the > split between two screens). For two graphics cards two separate graphics contexts is certainly best, but for a single graphics card across two screens the best performance will be found by using a single graphics context across both screens. For a vis-sim application its certainly highly desirable feature and real loss from a developers toolbox. Now for a desktop app this might not be so bad so the issues with the desktop managers handling of this setup is a consideration, and top performance may well be a secondary issue. These problems are solvable though, under X11 there are extension to handle where windows pop up for instance. So while it's good to hear "vista works great" for you, this needs to be put in to context once you start comparing it to other OS's that don't have the same arbitrary limitations. Not only are this limitations not good news for Vista, but performance under OpenGL is not what once was, XP used to lead over Linux, not any more, it trails both Linux and Solaris: http://www.phoronix.com/scan.php?page=article&item=nvidia_workstation_perf&num=1 This sad state of affairs means that apps written with the OpenSceneGraph are running slower than they should under Vista. For OpenGL apps its been a backward step relative to XP. Just now we have XP NVidia drivers crashing and well this is most likely down to Nvidia driver exhibiting a regression in quality. Hopefully it'll be just a temporary hitch, when NVidia get their drivers right they really sing (at least under XP and Linux :-) Robert.
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