my problem is that my image tiles are not being displayed when the raster position is outside of the view frustrum. That makes sense, but the work-around of calling glBitmap(0, 0, 0, 0, x_offset, y_offset, NULL) to move the raster position outside of the view frustrum before calling glDrawPixels completely trashes the system with 3Dlabs GVX cards (have to do a hard reboot). It works fine on Wildcat and NVIDIA cards.
Does anybody know another way to display the image tile when the raster pos is invalid?