Hi Sebastian, i tested the osgShadow also on NVidea. It behaves similar, so we have a bug inside the osgShadow library. :-(
Adrian 2008/3/16, Robert Osfield <[EMAIL PROTECTED]>: > > HI Sebastian, > > I see the artificate on Nvidia hardware so this rules out an ATI bug. > So far it I looks like an osgShadow bug, exactly what's gone amiss I > don't know though... > > > Robert. > > > On Sun, Mar 16, 2008 at 10:15 AM, Sebastian Messerschmidt > <[EMAIL PROTECTED]> wrote: > > > > > > > > > > Hi Adrian, > > > > > > > > As I've pointed out in the osg-users list, there seems to be a bug in > recent > > ATI drivers where the t-coordinate in the generated shadow texture is > > screwed up, i.e. inversed. Your screenshots don't look exactly like the > > artefacts I've seen but it might be related I reckon. > > > > To check this I recommend replacing the fixed function vertex shader by > your > > own code which does the EYE_PLANE projection and play around with the > > coordinates. > > > > > > > > Cheers > > > > Sebastian > > > > > > > > ________________________________ > > > > > > Von: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Im Auftrag von > Adrian > > Egli OpenSceneGraph (3D) > > Gesendet: Donnerstag, 13. März 2008 21:57 > > An: OpenSceneGraph Users > > Betreff: Re: [osg-users] osgShadow example and gerneral question > > > > > > > > > > > > some screenshots of the bug > > > > /adi > > > > > > 2008/3/13, Adrian Egli OpenSceneGraph (3D) <[EMAIL PROTECTED]>: > > > > Since the OSG 2.2 or event some version before, osgShadow is broken. I > don't > > yet know why. but it doesn't work on ATI based computers as far as i > could > > test it. > > > > > > 2008/3/13, Raymond de Vries <[EMAIL PROTECTED]>: > > > > > > > > Hi, > > > > All I know that the PSSM implementation was not changed, the last I > > looked at the svn version (some weeks ago), compared to 2.2.0. I will > > test the svn version example also asap, and let you know. > > > > Now that you mention PSSM, I've send a (small) patch some months ago > and > > suggested to change the interface a little so that parameters can be > > changed at runtime (where it is currently only possible at startup). > > > > Also I've send a bug report to the list in which I showed an artifact, > > incl source code. > > > > Within some weeks I would like to dive into PSSM again, so hopefully we > > can join forces. > > > > Cheers > > > > Raymond > > > > > > > > Jean-Sébastien Guay wrote: > > > Hi Adrian, > > > > > > > > >> i have retested osgShadow and get some really strange behaviour. > event > > >> PSSM doesn't work on my ATI x1600 based pc. was there changes and > did we > > >> really test all options of osgshadow / implementation, or do > > >> i only have such a problem > > >> > > > > > > I remarked a while ago that osgshadow --pssm did not work for me on > my > > > nVidia card (even with the --NVidea (sic) switch, I see no shadows). > No > > > idea what's wrong, as I have no time to go into the details... > > > > > > I know I'm not much help, but at least you know you're not alone. > > > > > > J-S > > > > > > > > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > > > > -- > > ******************************************** > > Adrian Egli > > > > > > > > > > -- > > ******************************************** > > Adrian Egli > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- ******************************************** Adrian Egli
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