Just as a followup, I did discover why OSG was adding the MVP and Vertex declarations to the vertex file. I had previously started with version 120 code that included the line
Code: gl_Position = ftransform(); In my effort to carefully transition from 120 to 140+, I only commented out the ftransform() statement - I didn't remove it. Thus, my transitioned code looked like: Code: gl_Position = osg_ModelViewProjectionMatrix * osg_Vetex; //ftransform(); The automatic conversion, then, saw the call to ftransform() and did what it was supposed to do - replaced ftranform() with osg_MVP * osg_Vertex and declared both at the start of the file. The end result would be that osg_MVP and osg_Vertex get declared twice (once by me and once by the auto converter) and the gl_Position statement ends up looking like: Code: gl_Position = osg_ModelViewProjectionMatrix * osg_Vertex; //osg_ModelViewProjectionMatrix * osg_Vertex; I suppose that's a bug, which requires detecting commented code in the source string to fix, but I can't imagine anyone else but me would go to the effort to create the condition that caused it... Anyway, the moral of the story is: don't leave any commented out calls to ftransform() in legacy shader code! Whoops. :) ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=47776#47776 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
