When running Doom3 on amd64, both emul-linux-x86-xlibs and emul-linux-x86-soundlibs are required as dependancies but are not present in the ebuild. I have included an updated ebuild.
Created attachment 75347 [details] Updated Doom3 ebuild
Created attachment 75355 [details] Updated Doom3 ebuild
Fixed... thanks for the bug report... in the future, just file a patch rather than the entire ebuild as it makes it easier to see what's changed... http://games.gentoo.org for more information.