[osg-users] Inherit parts of shader program

[Ravi Mathur]

Thank you Robert! Can you speak to the performance of using multiple osg::Programs vs shader composition?

Another question: suppose I use a separate osg::Program for each osg::Drawable. Each Program would use the same Vertex osg::Shader object, but have its own Fragment osg::Shader object. This is the straightforward answer you mentioned. In this case, do you know if there's any performance benefit to sharing an osg::Shader object among multiple osg::Program objects? Or is it the same (performance-wise) as having separate Vertex & Fragment osg::Shader objects for each osg::Program?

Thanks!
Ravi

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