Hi I suggest adding :
8) Writing a node in .osg file can help you having a good overview of the graph, the state, the transforms, the geometries, ... (in particular if your debugger is not a very good one) Vincent. 2009/4/20 Pierre Bourdin (gmail) <[email protected]> > Hi Paul and thank you, > this is a nice help. > > May I suggest to put it on the wiki ? > > Regards, Pierre. > > Le samedi 18 avril 2009 à 12:10 -0600, Paul Martz a écrit : > > Yet more debugging tips: > > 5) Set OSG_NOTIFY_LEVEL to either INFO or DEBUG and examine the output. OSG > might be trying to well you why things are going wrong. > > 6) Run the osgUtil::Optimizer on your scene graph with the CHECK_GEOMETRY > flag (to check for simple mistakes like not having enough colors in your > color array when using BIND_PER_VERTEX). With OSG_NOTIFY_LEVEL set verbose > enough, the Optimizer will display warnings if it encounters these types of > issues. > > 7) Read the function comments in the header files for functions you use. > This will help you avoid the accidental use of deprecated functions (like > Geometry::setVertexIndices()) that are inefficient (but remain in OSG for > compatibility reasons). > > Paul Martz > Skew Matrix Software LLChttp://www.skew-matrix.com > +1 303 859 9466 > > -----Original Message----- > From: [email protected] > [mailto:[email protected] > <[email protected]>] On Behalf Of Paul Martz > Sent: Saturday, April 18, 2009 11:49 AM > To: [email protected] > Subject: [osg-users] OSG debugging tips > > Hi all -- It seems like there has been a rash of "help me debug my > code"-type questions lately, so I thought I'd post a short list of debugging > techniques and other aids to help people out. I hope people find this > information to be useful. > > 1) You are a software engineer and you have the OSG source code. Use it. > Step through it in a debugger. (Many of the posts I've seen lately indicate > that the poster has not looked inside the OSG code at all. This is a great, > free resource; learn to use it. The code doesn't lie.) > > 2) For simple rendering problems, use a tool like GLIntercept to capture the > OpenGL calls. If you know OpenGL, this is a great way to track down why > things don't render correctly. If you don't know OpenGL, buy the red book > and learn it, otherwise you'll never be effective at coding OSG. > > 3) Here are a few ways to learn some basic OSG concepts that get covered in > this email list very frequently: > a) Buy/download the Quick Start Guide > http://www.lulu.com/content/paperback-book/openscenegraph-quick-start-guide/ > 767629 > There is a color version, b&w (which is cheaper), PDF (which is free), > and a Chinese version. > B) Search the mail list archives: > http://groups.google.com/group/osg-users?hl=en > If you're a beginner, your question has probably been discussed and > answered multiple times. > C) Get familiar with the OSG wiki: > http://www.openscenegraph.org > > 4) If you really need professional help, consider purchasing a support > contract from myself or Robert Osfield, or contracting with someone else on > the list for support. You are more likely to get quality help if you pay for > it. > > Paul Martz > Skew Matrix Software LLChttp://www.skew-matrix.com > <http://www.skew-matrix.com/> > +1 303 859 9466 > > _______________________________________________ > osg-users mailing > [email protected]http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ > osg-users mailing > [email protected]http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Pierre BOURDIN > I.M.E.R.I.R. > Av. Pascot BP 90443 > 66004 PERPIGNAN > tél: 04 68 56 84 95 > fax: 04 68 55 03 86 > email: [email protected] > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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