X Window System 现况与挑战.ppt

July 16, 2004 X Window System 現況與挑戰 Jim Huang (黃敬群) jserv@kaffe.org Official Kaffe Developer 題綱 X Window 概況 X 實作 XFree86 TinyX / KDrive FreeDesktop.org xserver Xorg / Debrix X Extensions 未來的挑戰 X Window 概況 X Client 與 X Server Display 與 Screen Event 與 Request X Window 的網路通透性 Window 的階層性 X Window 的外觀 Window Manager X Client 和 X Server X Window 採 Client-Server 架構 X Client 在 X Window 下執行的應用程式，需要 X Server 為其服務 X Server 整個管理桌面的 X Window 系統 ， 稱為 X Server 除了負責 GUI 介面之管理和提供 Client 端的服務之外，並且還管理系統資源 (Resource) 和事件 (Event) 之發生和傳遞。 Display 與 Screen Request 與 Event X Window 的網路通透性 X Window 的階層性 X Window 的階層性 (續) X Window 的外觀 Window Manager X 實作 XFree86 KDrive (TinyX) FreeDesktop.org Xserver Xorg / Debrix XFree86 MIT X License 跨平台： UNIX? and UNIX-like operating systems such as Linux All of the BSD variants Sun Solaris x86 Mac OS X (via Darwin) OS/2 Cygwin Open Source Xserver 的基礎 XFree86 的若干分支 XFree86 4.0 TinyX (KDrive) FreeDesktop.org Xserver (fd.o xserver) XFree86 4.4 RC2 (廣告條款) XOrg (aka X11R6.7 is under the X.org umbrella, and is hosted on freedesktop.org) Debrix (XOrg + autotool + FreeDesktop.org X Extensions) XFree86 4.3 XWin (Cygwin’s Xserver) XDarwin (Xserver for Darwin / MacOS X) Xouvert XDirectFB (rootless Xserver on DirectFB) 名詞解釋 DIX Driver-Indepdent X Anything that isnt server-specific (extensions, core functions/structures, etc), goes in here. DDX Device-Dependent X inverse of DIX XFree86 Contains a DIX, a DDX, X libraries, X apps, fonts, and docs X.org Formerly X Consortium Bunch of companies and developers working on the X11R6.x reference codebase Freedesktop.org Umbrella project for various desktop-related Linux projects KDrive Small X Server implemented by Keith Packard 首次現身於 XFree86 4.x CVS 現為 FreeDesktop.org 的 Xserver 子計畫 特性： Keith 引入許多 X Extensions 硬體加速架構 小又快 X Extensions 硬體支援 Render XAA / KAA Xfixes / Damage / Composite 硬體支援 (2D) Copy areas of memory around Fill rectangles with a solid color (or pattern) Copy and fill can be done with ROP and planem