Problem with normal mapping?

Blitz3D Forums/Blitz3D Programming/Problem with normal mapping?

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Taking a look at Fredborg's demo , I may have noticed a problem.

If you replace the head mesh with a cube and keep the light position fixed, it becomes apparent that the normal mapping isn't putting shadows in the right direction- it just looks like a fixed texture. Is this....
(1) A problem with Blitz normal mapping
(2) A problem with the demo [looks OK 2 me]
(3) A known limitation of cubemapping
(4) Something I have done wrong in my (minimal) tweaking
(5) None of the above

Any ideas?