It looks like backface culling is off (GLES2 does have back face
culling). Turn this on.

  It also behaves as if you ended up with a context that perhaps has no Z
buffer. This can happen if you choose your context poorly via EGL. On some
Adreno GLES2 devices I've used, I had to drop down to a 5,6,5 RGB channel
depth in order to get a Z buffer.

-- 
Chris 'Xenon' Hanson, omo sanza lettere. [email protected]
http://www.alphapixel.com/
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