Hi Guy I would recommend a search thru the OSG mailing archives on the subject of OpenGL 3.0 and the fixed pipe line deprecating , there have been many good and useful conversations on this, that would help you understand the fundamental shift in Opengl 3.X going forward and how OSG is proposing to tackle the shift in paradigms Gordon Tomlinson Product Manager 3d Technology & Project Wyvern Overwatch(r) An Operating Unit of Textron Systems
________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Guy Sent: Wednesday, March 03, 2010 9:35 AM To: OpenSceneGraph Users Subject: [osg-users] OpenGL3.0 Hi all, I built the osg2.9.7. I tried to create the project with the OSG_GL3_AVAILABLE, and he rest GL flags disabled. But when I run the simplest example, osgviewer with the cow.osg to render, it renders nothing and display warnings as "TexGen::apply - not supported" and some other stuff. I dug into the code and found that this is due that I disabled the OSG_GL_FIXED_FUNCTION_AVAILABLE. Does it mean that with OpenGL3 there is not fixed pipeline and all should be written by shaders? What about the projections of the objects from the 3D world to the camera plan, are they done by OpenGL or should I write them too? And if all should be done by shaders, does it mean that most of the code of OSG won't work under GL3 if no appropriate shaders would be written? Thanks, Guy.
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