[c++] Pass Environment / Bump slot / Subdivision

[Michael Gangolf <miga_miga(at)gmx.de>]

Hi
I have three c++ questions:

1. How can I access the active pass environment to see if there is an image 
used as an environment shader (like a HDRI file)?

2. I want to find out if there is something plugged into the "bump" slot of my 
material and if yes which image. How to do that in c++? Or is there a better 
way to find out if the material got a bump map?

3. Is there a way to check the subdivision level of an object 
(geomapprox.gapproxmosl and geomapprox.gapproxmordrsl)? At the moment I'm 
using a JScript inside my c++ plugin, but I want to get rid of that :)

Thanks for the help,
Michael
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