Robert, I'm working on the osgEarth ShaderGenerator and I have a question for you :)
One of the things I need to do is collect the current osg::State at a given point in the scene graph. So, my visitor pushes statesets into a State as usual, and then I'm able to examine that state as necessary. So far so good. The trouble comes with Texture2DArray attributes. Normally, I can check to see if an attribute is "active" by checking its associated mode; e.g. if getMode(GL_TEXTURE_2D) is ON, I know the osg::Texture2D on the same unit is active. But for a Texture Array, there are no associated modes (since it's a shader-only attribute). And the StateSet's attribute map doesn't keep track of the ON or OFF OverrideValues; it only keeps track of OVERRIDE and PROTECTED. How would you suggest I determine whether a Texture2DArray is ON or OFF in a given osg::State? Glenn Waldron / @glennwaldron / osgEarth
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