Hi James, I believe you have to:
texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::NEAREST); texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::NEAREST); -- Regards, Peter Wraae Marino www.osghelp.com - OpenSceneGraph support site On Sat, Jul 12, 2008 at 11:29 PM, James Dickson <[EMAIL PROTECTED]> wrote: > I decided to go down the route of writting my own line, circle etc > algorithms as I only need a few, but I have hit a slight snag. :-( I have > attached an image to show the effect I am getting, ideally I would like the > Texture2D which is projected onto the billboard to be sharper? I.e the lines > drawn on the white billboard not to have blurred edges. The texture > resolution is 256x256, and increasing it only partially helps, are there any > filters I can turn on\off for the texture to help fix it? > > Many thanks, > James > > 2008/7/11 Jean-Sébastien Guay <[EMAIL PROTECTED]>: > >> Hi James, >> >> I was wondering if it is possible to draw on a Texture2D instance. I know >>> this isn't possible, but I am wondering if you can do the equivalent of: >>> Texture2Dinstance->DrawCircle(x,y,r); >>> >> >> OSG does not do 2D drawing to images. You can do your own by getting the >> data pointer from an osg::Image and drawing pixels into that (if you feel >> the need to write your own line, circle, flood-filling etc. algorithms :-) >> ), or you can use an imaging library (ImageMagick, etc.) to make the image >> and then get the data from that library and copy it into an osg::Image (or >> perhaps even use the same pointer if it's a raw format). No need to save the >> image to disk and re-read it with OSG. >> >> Hope this helps, >> >> J-S >> -- >> ______________________________________________________ >> Jean-Sebastien Guay [EMAIL PROTECTED] >> http://www.cm-labs.com/ >> http://whitestar02.webhop.org/ >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > > > > -- > James Dickson > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- Regards, Peter Wraae Marino www.osghelp.com - OpenSceneGraph support site
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