Hi Zhuwan,

I am not aware of any changes that would introduce a regression in
anti-aliasing, perhaps rather than a bug you have confused the set up of
aliasing.

The OSG by default does not enable anti-aliasing, this applies to 3.2 the
same with all previous OSG releases.  So running the osgviewer with cow.osg
and without the OpenGL driver overrding to switch on anti-aliasing you
should see no anti-aliasing in any OSG version.

To enable antialising you have to set the Traits::samples and sampleBuffers
values when setting up the GraphicsContext.  You can set the default via
the OSG_MULTI_SAMPLES env var, or via the command line i.e.

  osgviewer cow.osg --samples 4

I have just tried this on my OSG svn/trunk + Linux/NVidia system and it
works just fine.

If there has been a difference in behaviour then it'll likely be down to
the OpenGL driver playing games with auto-detecting the software that is
running and choosing defaults.  This does happen, but I haven't heard this
happening to osgviewer yet.

Robert.


On 10 September 2013 14:00, webmaster <[email protected]> wrote:

> Hi all,
>     I boughted two NV GTX760 4G DDR5 3D cards,and make them SLI
> successfully,and also tested many other type 3d cards,seems in OSG 3.2's
> viewer window can't do any antalis,the attached snap shot is the NV display
> set,and the runtime snap of "osgviewer.exe cow.osg"!
>    Even in single 3d card mode,and tried many NV 3d display card,still is
> zigzaged,and the previouse version of osg which is before 3.2 can do anti
> alias correctly!
>    anyone know why?
>    Thanks
>
>    zhuwan
> 09,10,2013
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
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