Hi Robert, Thank you for all those explanation, it's all make sense now. You're perfectly right when you say that I want manage my own lighting, that's why I told the viewer to bet set up with NO_LIGHT. I'm gonna update my svn version from OSG and try the fix in my own application.
Kind regards, 2009/1/27 Robert Osfield <[email protected]> > Hi Alexandre, > > On Tue, Jan 27, 2009 at 5:29 PM, Robert Osfield > <[email protected]> wrote: > > Now, the question for me is why adding the slave fixes things, and why > > without the slave the defaults are having an effect. It looks like an > > order of initialisation issue - i.e. the master camera and it's > > Renderer intialize with the defaults of the HEADLIGHT which enables > > the GL_LIGHTING mode by default, but the later reset of the > > LightingMode to be NO_LIGHT doesn't actively change the GL_LIGHTING > > mode/enable disable. I will continue to look into this, but once I > > do fix it the behaviour we should see is that there will be no > > lighting enabled by default if you do NO_LIGHT. > > I have now tracked down the inconsitency to osgUtil::SceneView not > passing on changes the GL_LIGHTING mode when the LightingMode is > toggled on/off. I've now fixed this and checked it into svn/trunk. > > This fix, will mean that in your example both with and without the > slave Camera will behave the same, both won't have GL_LIGHTING mode > enabled - which is exactly what you've told the viewer to do, and > since the scene graph doesn't explictly enable GL_LIGHTING then this > mode remains off, so no OpenGL lighting is enabled. > > To enable it you simple enable it manually in the scene graph, since > you are managing your lighting in the scene graph then it makes > perfect sense that you you be enabling the GL_LIGHTING mode for the > subgraphs that require OpenGL lighting. > > Robert. > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Alexandre AMALRIC Ingénieur R&D =================================== PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr
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