[waffle] Waffle GBM support

[Barracuda]

Hi!
I have some trouble getting GBM Waffle backend to work. I'm trying gl_basic example from sources. I start it from VT (X isn't running) as "./gl_basic --platform=gbm --api=gl", it runs OK and says "gl_basic: run was successful", however, NOTHING happens - no mode switch, no drawing - nothing. But in X it works fine (with --platform=x11_egl and --platform=glx). 
I'm using version 1.3.0 on: Gentoo x86_64, Intel HD3000 (i915 driver), Mesa 9.1.6, support up to OpenGL 3.1 and EGL 1.4.
If you need more info, I'll provide, just say what.