[GRASSLIST:3530] NVIZ - visualization problem

[marino vetuschi zuccolini]

Hello to all,
the problem I found is in the realease .pre2 and .pre3.
The situation is the most common in use of NVIZ: I load a DEM and a 
draping map.

All runs ok if the model is 'totally' in between the NVIZ 
visualization window or without the principal NVIZ menu windows above 
it.

IF I try to zoom the model and a border of the 3D model only touch or 
overpasses a window border, a vent of coloured bands start from a 
point in the lower left side of the window and the model is covered 
by this patches of colors. Obviously I cannot see anithing else.

Any idea?

m.