On Nov 2, 2007 8:49 PM, <[EMAIL PROTECTED]> wrote: > My first question is whether it is possible to render an RGB texture with > no alpha channel with binary transparency. I'd like to map a specific > color to 100% transparency. Would this require shaders? If so, could > someone point me to a good resource for coding shaders in OSG?
You'll need to use shaders for this. Have a look at the osgshaders example or the glsl_*.osg example data files. The osgmovie also just so happens to have a fragment shader that does exactly what you are looking for. > My other issue is a rather strange behavior I have observed in OSG. My app > is constantly dumping a lot of points into the scene graph > (osg::DrawArrays with PrimitiveSet::POINTS) while updating a transform. I > have run into an issue in which nothing gets rendered at all, unless I > remove either the point insertion or the transform update. Does anyone > know what could cause this behavior? This read kinda like "I do stuff and it doesn't work, how do I fix it?" At which the best I recommend is that you fix the problem in your application and the issues should go away. Now if actually want some external help you need to be much more specific about what you are doing and what you are expecting to happens. Hows about provide a small code example of how you're adding points. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
