USE dga

LaoLiulaoliu

USE里面该选dga吗？
dga - Adds DGA (Direct Graphic Access) support for X
我wiki了下.说机制是，X-server把处理的全交给client，client处理完后返回给X-server.
it is mostly used for full-screen video/games.
不幸的是，
Unfortunately this setup slows down programs that run on the same host as the X-server that display images rather than drawing text and graphics.These programs have to render the whole image themselves, and then send it to the X-server, who writes it to the frame-buffer. This two-step process is slower and uses more processor time than if the client program could write directly to the frame-buffer itself.

那么这个选项是好还是不好，该选吗？各位有选吗？