HI Lv, osgText::Text renders into a 3D scene using OpenGL, which is quite different than Qt rendering to a 2D window where font resolutions can exactly matched to the pixels on screen, so you can't really compare the two.
osgText::Text itself doesn't implement anti-aliasing, anti-aliasing is a property of the GraphicsWindow that you've created. For the blurriness you reporting it's unlikely to be an high level anti-aliasing issue. My guess is that it's more likely an issue of undersampling of the glyph texture (magnification) if the size of glyph on screen is lower than the font resolution, or possible magnification if the glyph on screen is smaller than the font resolution. A 1:1 ratio will likely minimize these effects. You don't provide any guidance on how you are rendering so I can't provide any more details than this. Robert. On 2 March 2017 at 17:41, Lv Qing <[email protected]> wrote: > Hi, > > In linux we are using osg::Text to display some chinese characters.Then > we find the osg::Text looks a little blur when the size of characters is > small.Or,the Black characters seems a little gray when the character size is > small.I have setFontSolution(128,128),it not help. > > Then I fond our old app which using QT to draw text,and with the same > font,QT text looks better than osg::Text. > > I fond QT use QPaint to loading font and drawing text ,and It can enable > or disable Antialiasing of text like below. > > > > Code: > class Q_GUI_EXPORT QPainter > { > Q_DECLARE_PRIVATE(QPainter) > Q_GADGET > Q_FLAGS(RenderHint RenderHints) > > public: > enum RenderHint { > Antialiasing = 0x01, > TextAntialiasing = 0x02, > SmoothPixmapTransform = 0x04, > HighQualityAntialiasing = 0x08, > NonCosmeticDefaultPen = 0x10 > }; > > > > > So my question is ,does osg can enable or disable Antialiasing to an > osg::Text? > > > > > ... > > Thank you! > > Cheers, > Lv > Code: > > > > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=70395#70395 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
