On Nov 26, 2007 8:08 PM, Bankim Bhavsar <bbhavsar@xxxxxxxxxx> wrote: > I'm implementing Xv extension of linux X driver. > > I need to use offscreen memory to allocate space for incoming video-frames. > Currently, I am using xf86InitFBManager() part of xf86fbman.h to > initialize offscreen memory by specifying a BoxPtr. The offscreen > memory is initialized such that it starts just after the on-screen > memory (using Frame Buffer Size). > > > When there is a ModeSwitch the Frame Buffer Size changes and the > offscreen memory previously allocated becomes a part of the on-screen > memory and causes X to crash. I was thinking of re-initalizing the > Offscreen memory manager on ModeSwitch and modify the previously > allocated pointers accordingly but I don't see a way to re-initialize > the offscreen memory. > > > One possible solution would be to leave some space before starting the > offscreen memory. That would work for common case but still doesn't > guarantee the framebuffer extending into the previously initialized > offscreen memory. > > > I also looked into EXA but doesn't seem to serve the purpose either. > > > Am I missing out on something? Any other possible solution? > Can someone point me to a driver that uses EXA and handles the offscreen > memory on ModeSwitch? I believe nv does this. Alex _______________________________________________ Devel mailing list Devel@xxxxxxxxxxx http://XFree86.Org/mailman/listinfo/devel
