XFree86 had problems with OpenGL over network (to the extent of "it does not work at all" for any reasonable definition of "work"). Since the X.org fork this go

XFree86 had problems with OpenGL over network (to the extent of "it does not work at all" for any reasonable definition of "work"). Since the X.org fork this got mostly fixed and the related infrastructure (DRI, AIGLX, GLX_EXT_texture_from_pixmap, ...) is used extensively by other parts of the X server (for example to implement XVideo or Render in terms of OpenGL). On the other hand, typical applications (ie. games) usually expect that the channel to GPU has quite large bandwidth and no meaningful latency, which simply isn't true for any kind of network connection.