Compositing

If you have set up your graphics card properly, you should have direct rendering enabled. To determine this we'll run the glxinfo command which is part of the mesa-progs package.

$ glxinfo | grep direct
direct rendering: Yes

Compiz-fusion, or just compiz, is the most popular compositing tool. Since it is cutting-edge, its packages are typically masked by the gentoo devs. Before we emerge it, we should unmask some packages appropriately.

$ sudo nano -w /etc/portage/package.keywords

Ensure the file has the following contents. Note: use ~x86 in place of ~amd64 for 32-bit systems.

x11-apps/fusion-icon ~amd64
dev-python/compizconfig-python ~amd64
x11-wm/compiz ~amd64
x11-wm/compiz-fusion ~amd64
x11-libs/libcompizconfig ~amd64
x11-wm/emerald ~amd64
x11-themes/emerald-themes ~amd64
dev-libs/protobuf ~amd64
x11-apps/ccsm ~amd64
x11-plugins/compiz-plugins-main ~amd64
x11-plugins/compiz-plugins-extra ~amd64
x11-libs/compiz-bcop ~amd64