[osg-users] osgText artifacts

Don Leich drl at ilight.com
Fri Nov 6 11:31:00 PST 2009


Thanks for the rapid response.  I was fully expecting the first reply to be
advice about getting rid of the antenna and switching to cable.

I have read your posts on osgPango bfore.  This may be the motivation to check
it out close up and personal.


Jeremy Moles wrote:
> On Fri, 2009-11-06 at 14:10 -0500, Don Leich wrote:
>>Hi all,
>>For a while now I've noticed that some of my osgText at times may exhibit
>>unwanted artifacts, similar to TV ghost images.  These artifacts are affected
>>by the text size, resolution, and perhaps other factors.
>>Digging in a bit more I found that the osgtext demo shows this
>>problem -- look at the lower, right most "t".  This partial snap shot was
>>taken when osgtext ran at a window size of 800 x 600 on a Quadro FX 4000.
>>The second snap is from my development where the artifacts are a little more 
>>Does anyone know how to avoid these ghosts?
> These are software bugs--one which I have lamented for years--though I
> was never able to fix them in OSG proper. Instead I've written an
> external library called osgPango to give better font support in OSG (at
> the cost of having to depend on the Pango library). Please check out:
> http://osgpango.googlecode.com
> ...for more info. You can contact me here, on AIM as cubicool, or on
> googletalk as cubicool at gmail.com if you want to ask any questions. It
> will build easy on Linux, harder on Windows (though, as you can see from
> the screenshot, it's not impossible. :))
>>-Don Leich
>>osg-users mailing list
>>osg-users at lists.openscenegraph.org

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