NVidia recently added an extension to their 275+ series of drivers called "GL_NV_path_rendering." This turns path (sometimes called vector graphics) rendering into first class drawables in OpenGL. Honestly, it's one of the coolest things I've seen in a while, and naturally--given my interest in OpenGL UIs--I began researching it and putting together a NodeKit for OSG.
You can find it (in its infancy) here: http://osgnvpr.googlecode.com Run the example thusly: # osgnvprviewer # osgnvprviewer --perspective ..and notice how that no matter what the resolution, scale, or projection, the objects are rendered clear and crisp. There is also support for glyphs inside of GL_NV_path_rendering, so I will very soon be adding support for this style of text rendering into osgPango (and possible, osgText::TextNode). I've only just begun exploring this, and I'm mainly sending this e-mail to see if there is any professional interest in seeing this NodeKit mature in a timely fashion. I don't know if this is outside the allowable etiquette of the lists, but in full disclosure I'm looking to fill some free time by seeking funding for development of by those who would not only use these features but could benefit from being able to influence their development and pace! If this is inappropriate for the lists, just let me know and I'll be sure and keep my peddling to a minimum from here on out. :) At any rate, I'll continue to work on osgNVPR regardless, alongside devleopment of osgCairo/Pango/Widget and the recent TextNode submission. (Can you see a pattern here? All OSG interface development tools...) Some notes: - NV_path_rendering introduces a new kind of rendering "style" for its path objects. This doesn't map 1:1 to any existing usage of osg::Drawable, though I am able to "hijack" the compileGLObjects() method to get what I need. :) - BoundingBoxes are calculated with an extension call, but in order to use the extension I need a contextID (provided via either a State object or RenderInfo object). Unfortunately, these are difficult to "get to" at times, so CameraManipulators cannot properly determine a home position unless the Path has been compiled. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
