Hello all. I was wondering if there is any word on the status of getting the COMPOSITE extension built into XQuartz? I personally use a bunch of UNIX-y GUI programs and dockapps (some of them quite old). I've found that, when doing graphically intensive actions (such as quickly scrolling in a unicode-rxvt term, forwarding my SSH session to XQuartz to write LaTeX/use eclipse from our campus workstation computers/submit moodle assignments in firefox), that there is quite a good deal of graphical sluggishness. CPU use does not spike much, so I am assuming that this is a flaw of the X server rendering itself (or perhaps the OS X drivers?). I have somewhat superficial knowledge of the COMPOSITE extension, but I was under the impression that X11 compositors (such as compton) get around this issue by using open-gl/randr rendering as their graphical back-end (among many other hacks). It seems that programs which do use open-gl rendering are unaffected by the sluggishness caused by my dockapss (glxgears, for example). I was also under the impression that most modern UNIX-y Desktop Environments (such as Gnome, KDE, etc.) come with compositors built in (for eye-candy such as v-synch, drop shadows, smooth scrolling, etc.). It seems like adding COMPOSITE extension support could potentially bring over users from other operating systems (especially with the wonderful pkg-src development from Jonathan Perkin at joyent) that could further help re-vitalize the OS X open-source community. I know that, normally, to enable the composite extension in X11 you would just add: Section "Extensions" Option "Composite" "Enable" EndSection to your xorg.conf file. As we know, XQuartz uses a different system where all of the X server extensions are always started on launch (xrandr, etc.) Am I missing something, or is XQuartz still being built without the COMPOSITE extension enabled? I remember reading archives from the past that explained how builds would fail while trying to compile with COMPOSITE support [1]. That was years ago, and I thought there was a modern XQuartz branch that supported the extension..[0] Here are some (bad examples) of the issue that I am talking about: http://cs.gettysburg.edu/~duncjo01/XQuartz.webm http://cs.gettysburg.edu/~duncjo01/XQuartz-glx.webm Notice how, especially in the second screencast, extreme scrolling in the urxvt buffer causes the dockapps to hang, while the glxgears program chugs along at a smooth 60fps. I was hoping that enabling the COMPOSITE extension and using a compositor such as compton could alleviate such issues in the future. Let me apologize in advanced if I have interpreted this issue completely incorrectly; I am no X11 expert. [0]: https://lists.macosforge.org/pipermail/xquartz-changes/2011-May/001054.html [1]: http://lists.apple.com/archives/x11-users/2011/Feb/msg00013.html - John D.