bumblebee 3D acceleration in androVM virtualbox?

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http://askubuntu.com – I have been trying androVM on an Ubuntu 12.04 32bit laptop with Intel/Nvidia hybrid graphics configuration as the guest OS. I tested some of the graphics-intense applications, like Angry Birds, running virtualbox under optirun, but they seem really slow. How can I enable OpenGL acceleration for this VM in my hybrid graphics system? The AndroVM version I am running is this one: http://androvm.org/Download/androVM_vbox86t_4.1.1_r4-20121119-gapps-houd... (HowTos)