Hi Louis, Is the "shaderprogram" variable an osg::ref_ptr<osg::Program> or is it a osg::Program*? If it is not an osg::ref_ptr<osg::Program>, the reference count is going to zero in the removeAttribute method, and the object is being deleted. I had the same issue a while back. Hope this helps, Justin
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Louis Bouchard Sent: Wednesday, August 27, 2008 5:52 PM To: [email protected] Subject: [osg-users] Fwd: Strange stateset / shader problem Hi, since we cannot turn off a shader program like this: setAttributeAndModes(shaderprogram, osg::StateAttribute::OFF) .. I tried the suggested method from this post (http://www.mail-archive.com/[EMAIL PROTECTED]/msg08493.html) , and I simply removeAttribute(...) the shader from the stateset. This part works quite well. However, if I want to turn it back on again, setAttributeAndModes(shaderprogram, osg::StateAttribute::ON) produces a segmentation fault. I have no idea why. The shaderprogram pointer is still valid. I ran this through gdb and it was unhelpful. any ideas? thanks, Louis Bouchard _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
