Most drivers support an Option "NoAccel" in the Section "Device" of the XF86Config file. If the lines render correctly with "NoAccel" but not without, then it's a driver bug. Mark. On Tue, 28 Oct 2003, ktang wrote: > I just install Mandrake 8.2 on a system and ran an application which > which is running on several Redhat 5.0 systems. The application can > acquired and plot waveforms much in the same manner as a digital oscope. > The new Mandrake system is using XFree86.4.2.0. This system has a > plotting problem. > > The plots are generated using the XDrawLine such as: > > XDrawLine(DspAdr, mainform->window, gc, xo, yo, x, y); > xo = x; > yo = y; > > This is called from another function for however many points have been > recorded. The xo and yo variables are static integers within the called > function which used to keep the values of the last point, which is > needed for the next line segment. > > The problem on the Mandrake 8.2 system is the xo point is in the wrong > location. The result is discontinuous plot segments. I have printed > the points as they are being plotted and they are correct. The exact > same application works on the Redhat 5.0. The points are correct. > > It appears rather strange when the top 25% of a sine wave looks like a > Christmas tree. > > Has anyone else encountered anything like this? > > Thanks, > > Keith Tang > Marathon Electric > 100 E Randolph St. > Wausau, WI. 54402-8002 > > 715 675-3359 > > > _______________________________________________ > XFree86 mailing list > XFree86@xxxxxxxxxxx > http://XFree86.Org/mailman/listinfo/xfree86 > _______________________________________________ XFree86 mailing list XFree86@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/xfree86
