host/frontend/webrtc/doc/graphics.dot

digraph {
  rankdir = "BT"
  subgraph clients {
    rank = same;
    browser [label = "Browser"]
    vnc_client [label = "VNC Client"]
  }
  host_renderer [label = < <font color="blue">gfxstream</font> / virglrenderer >]
  run_cvd
  wayland_socket [label = "internal/frames.sock", shape = "rectangle"]
  webrtc [label = < <b>webrtc</b> >, penwidth = 2]
  vmm [label = < <font color="blue">crosvm</font> / <font color="red">qemu</font> >]

  subgraph cluster_android {
    label = "Cuttlefish VM"
    subgraph devices {
      rank = same;
      drm_card [label = "/dev/dri/card0", shape = "rectangle"]
      drm_render [label = "/dev/dri/renderD128", shape = "rectangle"]
    }
    subgraph hals {
      rank = same;
      angle
      egl [shape = "rectangle"]
      hwcomposer_drm [label = "hwcomposer.drm"]
      hwcomposer_ranchu [label = "hwcomposer.ranchu"]
      vulkan [shape = "rectangle"]
    }
    minigbm
    mesa
    swiftshader [label = "SwiftShader Pastel"]
    surfaceflinger
    vulkan_ranchu [color = "blue", label = "Gfxstream Vulkan"]
  }

  webrtc -> browser [dir = both]
  vmm -> vnc_client [dir = both, color = "red"]

  webrtc -> run_cvd [dir = back]

  wayland_socket -> webrtc [dir = both, color = "blue", label = < <I>Wayland</I> >]
  vmm -> wayland_socket [dir = both, color = "blue", label = < <I>Wayland</I> >]

  { rank = same; host_renderer -> vmm [dir = both] }

  drm_render -> vmm
  drm_card -> vmm

  minigbm -> drm_render
  mesa -> drm_render
  vulkan_ranchu -> drm_render
  hwcomposer_drm -> drm_card
  hwcomposer_ranchu -> drm_card

  minigbm -> hwcomposer_drm [dir = both, label = "HIDL (graphics.allocator)", style = "dashed"]
  hwcomposer_ranchu -> minigbm [dir = both, label = "AIDL (graphics.allocator)", style = "dashed"]
  angle -> egl [dir = "back", label = "Symlink", style = "dashed"]
  egl -> mesa [label = "Symlink", style = "dashed"]
  vulkan -> angle [dir = "back", label = "Shared library"]
  vulkan-> swiftshader  [label = "Symlink", style = "dashed"]
  vulkan -> vulkan_ranchu [label = "Symlink", style = "dashed"]

  surfaceflinger -> egl [label = "Shared library"]
  surfaceflinger -> hwcomposer_ranchu [dir = both, label = "AIDL (graphics.composer3)", style = "dashed"]
  surfaceflinger -> hwcomposer_drm [dir = both, label = "HIDL (graphics.composer)", style = "dashed"]
  surfaceflinger -> vulkan [label = "Shared library"]
  surfaceflinger -> minigbm [dir = both, label = "HIDL (graphics.allocator)"]
}