Is there any documentation on these? I'd like to find a way to get the eye position or view vector or something so I can try to make a parallax occlusion shader, but I don't know what data is passed to the shader... I saw Insane's post a while back, but it didn't answer my question. Despite looking a heck of a lot like hlsl code... it seems the only function of these files is to prepare the maps (ie transforming the normal maps rgb channels from a range of 0.0-1.0 to a range of -1.0 to 1.0) and pass them onto the REAL shader... wherever that is... I figure that stuff is buried deep in the engine and we can't get to it.
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