VRetrace Sync

[James Wright]

   I hope this is the correct mailing list to post this question to, if not please advise where it should go!

   Does anyone know if/when X11 will be extended to allow 2d drawing to be syncronised to the monitors vertical refresh. I already draw to a backbuffer first and use XShmPutImage() to copy to the window, so flickering is not a problem, but still get tearing/shearing which is especially noticable when scrolling large areas.  I understand that this also requires the event to be exposed in the kernel, but I thought i had read that had been done...? 


Thanks,
James