J-S, At this point, anything will help. I believe I'm using a ref pointer but I will double check. I tried following the paradigm outlined in the osgshaders example which seems to be "newing" the same way I'm doing below (i.e. new osg::Program).
The reason for the postdraw callback is that I'm rendering OGL symbology on top of an OSG view. I don't want the shader to be on when I render the symbology. Perhaps I need to turn shaders off in an update callback before the post drawback is hit.?.? FYI, the OSG and OGL are sharing the same render context but I'm pushing and popping state appropriately... On the complete program, it's a little difficult to include everything since my email machine is different from my development machine. If it's needed, I could try to include the whole program as an attachment... What's your pleasure? -Shayne -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jean-Sébastien Guay Sent: Friday, November 14, 2008 12:41 PM To: OpenSceneGraph Users Subject: Re: [osg-users] shaders in OSG... Hi Shayne, > // shader code done at setup time > tgpProgram = new osg::Program(); ... > emptyProgram = new osg::Program(); First, I don't know if you meant not to put the type here, but I hope you're storing these in ref_ptr<osg::Program>. Otherwise, you create the program (refCount = 0), then you attach the program to some node (refCount = 1), then detach it (refCount=0, the program is deleted) and thus you're using a dangling pointer the next time you try to attach it to a node. Second, you're running the code in a draw callback, and not an update callback. You need to run it in an update callback. The draw traversal (even the end of the draw traversal) is not a safe place to be modifying the scene graph. Can you send us a complete program that shows the problem? It's much easier that way around. Hope this helps, J-S -- ______________________________________________________ Jean-Sebastien Guay [EMAIL PROTECTED] http://www.cm-labs.com/ http://whitestar02.webhop.org/ _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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