Hi Art, Have you had any luck with this? I reported a similar problem a while back, but still haven't been able to figure out what is wrong. When I reverted to an older nVidia driver the problem went away. I also tried with older OSG versions, and it didn't seem to make any difference. So either the newer nVidia drivers have a bug, or there is some OSG bug that is only surfacing with the latest drivers. Out of 6 computers I tested on, 3 exhibited this problem. I've spent a lot of time on this issue with no luck. I'm interested to see how far you have gotten with this issue.
Cheers, Farshid On 12/4/06, Art Tevs <[EMAIL PROTECTED]> wrote:
Hi, Robert! Today I have tested it also on another machine and it seems to have the same problems. FBO is supported by every GeForce card cause it is implemented in the software driver and not in hardware (it is just another memory mapping approach) I have GeForce 6800 with 128MB and the machine where I tested it today was GeForce 7900 GTX with 512MB. I do not know anymore what driver it was on the 7900 machine. The problem seems to be similar that I have had for a long time ago with my own renderer. There I forgott to unbind FBO and the texture which is attached to it. The rendering was fine, cause the right FBO was switched on to the right time, but they were not switched off. After some frames the switching of fbos was terrible slow (~200ms until 1s). So the problem in the cubemap seems to look very similar to that one. If I get enough time, I will check what is wrong with osg when it renders to cubemap by using FBOs, but for now the bug/problem is still open. MfG, Art On Monday 04 December 2006 10:44, Robert Osfield wrote: > HI Art, > > osgprerendercubemap will default to using FBO if they are available. > I developed the current incarnation of osgprerendercubemap, adding > support for FBO, all done under NVidia/Linux so normally they work > fine. I have just tested and again they are still work fine on my > system. From glxinfo: > > OpenGL version string: 2.0.2 NVIDIA 87.62 > > So I obviously don't quite have as up to date driver as you, so > perhaps its the drivers, or perhaps its simply that your hardware > doesn't support FBO's in hardware. What hardware do you have? > > Robert. > > On 12/3/06, Art Tevs <[EMAIL PROTECTED]> wrote: > > Hi folks! > > > > I do not know exactly if it is a bug in osg or in nVidia drivers. > > I am using osg 1.2 the stable version from the homepage. > > nVidia drivers are 96.29. I am running it on Linux. > > > > The sample osgprerendercubemap do not work well with frame buffer objects > > (fbo) as a rendering target. If I start it with --fbo then the execution > > is very slow, however --pbuffer or other values works very well. > > Other examples using fbo, seems to work properly, only this render to > > cubemap example do not work very well. > > > > Could somebody test it with the same setup to find out if it is a problem > > in the driver or if it is an osg problem (what probably wouldn't be the > > case). > > > > > > MfG, Art > > > > > > > > > > > > ___________________________________________________________ > > Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: > > http://mail.yahoo.de _______________________________________________ > > osg-users mailing list > > [email protected] > > http://openscenegraph.net/mailman/listinfo/osg-users > > http://www.openscenegraph.org/ > > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ ___________________________________________________________ Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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