Picture 1 shows what the model looks like when viewed on Harmattan. Note OGLES2 depth testing is working. Picture 2 shows the same model viewed using my app compiled under Android. Note that depth testing is not working (ignore colour changes it's just depth testing that I've got an issue with).
To initialise the depth testing on Harmattan / BB10 / desktop I'm using:
Figure 1 - Model viewed using app compiled for Harmattan / BB10 / Win 7 dekstop
Figure 2 - Model viewed using app compiled for Android 4.3