[osg-users] OpenGL ES 2.0 and LIGHTING

[Grigoriy Mylnikov]

After some trial and errors, I managed to do it in shader. But this means one redundant matrix multiplication per each vertex. Isn't it more effective to compute it once per frame on cpu side?

What's the purpose of state.getModelViewMatrix()? I expected to get a camera*model matrix there. Or it is not yet defined at the moment lights are applied?

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http://forum.openscenegraph.org/viewtopic.php?p=75206#75206