I'm using GLM (http://devernay.free.fr/hacks/glm/) to load an OBJ model and render it using a display list. Problem is in the picture below. The texture at this location is not affected by lighting. That is to say, it remains the same color no matter what orientation the model is in. When I draw without a display list, everything looks fine.

The artifact is clear in this screenshot:


The artifact is hardly noticeable in this screenshot because the light is close to full intensity.


Any ideas?

Thanks in advance