# X.Org Conceptual Diagram
# Matt Dew

digraph Xorg {
  graph [ fontsize=18 ];
  node [ fontsize=15 ];

  subgraph cluster_client {
    subgraph clusterLibraries {
      label = "Client Libraries";
      color=black 
      Cairo;
      Pango;
      OpenGL;
      Toolkit;
      "Xlib or xcb";
      Cairo -> "Xlib or xcb";
      Cairo -> OpenGL;
      Pango -> "Xlib or xcb";
      Toolkit -> "Xlib or xcb";
    }
                
    label = "Client";
    fontsize=20;
    color=green
  }

  subgraph cluster_hw {
    Display;
    Keyboard;
    Mouse;
    label = "Hardware devices";
    fontsize=20;
    color=grey
  }

  Mesa;
  Gallium;

  subgraph cluster_server {
    Event_Queue;
    label = "Server";
    fontsize=20;
    color=blue

    subgraph cluster_ddx {
      "Input Drivers";
      "Video Drivers";
      label = "DDX";
      color=purple

      subgraph clusterAcceleration {
      	label = "Acceleration Architectures";
      	Acceleration_2D;
	Pixman;
      }
      Acceleration_2D -> Pixman;
      Acceleration_2D -> "Video Drivers" -> Acceleration_2D;
    }

    subgraph cluster_dix {
      Dispatch;
      Event_Queue;
      label = "DIX";
      color=purple
    }
    subgraph cluster_extensions {
      Render;
      RandR;
      Xinput;
      GLX;
      label = "Extensions";
      color=purple
    }
    Dispatch -> RandR [color=green];
    Dispatch -> Xinput [color=green];
    Dispatch -> Render [color=green];
    Dispatch -> GLX [color=green];
    Dispatch -> "Video Drivers";
    RandR -> "Video Drivers";
  }

  "Xlib or xcb" -> Dispatch;

  Keyboard -> "Input Drivers" [style=dashed];
  Mouse    -> "Input Drivers" [color=blue];
  "Input Drivers" -> Xinput;
  "Input Drivers" -> Event_Queue;

  Xinput -> Event_Queue;
  Event_Queue -> "Xlib or xcb";

  OpenGL -> Mesa;
  GLX -> Mesa;
  Mesa -> Gallium;
  Gallium -> Display [color=purple,style=dashed];

  "Video Drivers" -> Display [color=purple,style=dashed];

  "Video Drivers" [shape=Msquare,color=red];
  "Input Drivers" [shape=Msquare,color=red];
  Xinput [shape=Mdiamond];
}