When I try for instance to display 2 overlapping Cubes, they appear as overlapping in the 3D view but when I launch the Game Engine, they seem to be sorted face by face, as if the per-pixel Z-buffer was not working.
Is there an option to enable to make it works properly?
Is it the same problem as the alpha sorting one I have seen around?
See attached .blend file to reproduce the problem.
ZBuffer-Problem.blend (242 KB)