Debug level changed to 2

At this stage I know something is broken - either in demo or GFX itself.
When I try to display line:
gdispDrawLine(120, 160, 25, 160, White);
i get this one:
gdispDrawLine(120, 160, 215, 160, White);
(215=120+120-25)
Looks like there is a problem with displaying line which has y0 = y1 and
x0 > x1.