Hi Vincent, you have to set alpha to 0.0 for transparent pixels. Check if your RTT texture has the right format. In my case setting setClearColor(osg::Vec4(0., 0., 0., 0.)); on the rendering camera always works. Check if there are no slave camera which can overwrite the settings. Check also if you can really see the background, maybe there are no background pixels at all (I mean maybe they are overwritten by some black geometry or so). And finally check also if your image editing program do shows the alpha channel correctly (just for the case). I use gimp for that case.
regards, art ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=7228#7228 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
