[osg-users] osgText artifacts

Robert Osfield robert.osfield at gmail.com
Sat Nov 7 02:46:49 PST 2009

Hi Don,

My guess this is a minification mipmapping issue on the texture atlas
where the neighbouring glyph images are bleeding into the character
you want to render.   Choosing a font resolution nearer to your screen
resolution will probably help.


On Fri, Nov 6, 2009 at 7:10 PM, Don Leich <drl at ilight.com> 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
> prominent.
> Does anyone know how to avoid these ghosts?
> -Don Leich
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