> > [...] > > > Xinerama _does_ support open GL, at least with my matrox card, I can have > > > openGL on one monitor of the two. That is a limitation of the card > > > hardware, AFAIK, not of X. > > > > I doubt this is a hardware limitation. The hardware just renders to AGP or > > local memory. I may be wrong though... > > IIRC Matrox cards have a way of making a single framebuffer (with xinerama > hints) that appears on two monitors. That way you should get 3d accel on > both displays.
Using a single framebuffer for both outputs should be possibble by setting the correct pitch (add with of other screen as padding) and start address I think. This would require both screens to have the same framebuffer confiuration, i.e. pixel format. --ms
