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 > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > -- > ******************************************** > Adrian Egli > > > > > -- > ******************************************** > Adrian Egli > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
