#+title: Picom (Compton) Configuration
#+setupfile: headers
#+HTML_HEAD_EXTRA: <meta name="description" content="Phundrak’s Picom Configuration" />
#+HTML_HEAD_EXTRA: <meta property="og:title" content="Phundrak’s Picom Configuration" />
#+HTML_HEAD_EXTRA: <meta property="og:description" content="Description of the Picom configuration of Phundrak" />
#+PROPERTY: header-args:conf :exports code :tangle ~/.config/picom/picom.conf

* Introduction
  :PROPERTIES:
  :CUSTOM_ID: Introduction-a5320326
  :END:
  Picom  is the  successor  to Compton,  a standalone  compositor  for Xorg.  It
  provides  compositing for  WM  that do  not  provide  any, such  as  i3. I  am
  currently using  [[https://github.com/ibhagwan/picom][ibhagwan’s fork of  compton]] which provides  the ~dual-kawase~
  blur from [[https://github.com/tryone144/compton][tryone’s compton]] and rounded corners from [[https://github.com/sdhand/picom][sdhand’s compton]].

* Shadows
  :PROPERTIES:
  :CUSTOM_ID: Shadows-f4ffbb27
  :END:
  The following  enables client-side  shadows on  windows. Note  desktop windows
  (windows   with  ~_NET_WM_WINDOW_TYPE_DESKTOP~)   never  get   shadow,  unless
  explicitly  requested  using the  wintypes  option.  I personally  deactivated
  shadows because they don’t work out too well with rounded corners.
  #+BEGIN_SRC conf
    shadow = false;
  #+END_SRC

  The blur radius radius  for shadows is measured in pixels,  and it defaults to
  12px.
  #+BEGIN_SRC conf
    shadow-radius = 7;
  #+END_SRC

  Picom can also apply some level of opacity on shadows.
  | Default value | ~0.75~ |
  | Min value     | ~0.0~  |
  | Max value     | ~1.0~  |
  #+BEGIN_SRC conf
    shadow-opacity = 0.85
  #+END_SRC

  The left and top offsets for shadows are expressed in pixels.
  | Default value | ~-15~ |
  #+BEGIN_SRC conf
    shadow-offset-x = -5;
    shadow-offset-y = -5;
  #+END_SRC

  The following  values have an  impact on the  shadow’s RGB color.
  | Default value | ~0.0~ |
  | Min value     | ~0.0~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    shadow-red = 0.0;
    shadow-green = 0.0;
    shadow-blue = 0.0;
  #+END_SRC

  It is possible to specify a list  of conditions of windows that should have no
  shadow.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    shadow-exclude = [
      "name = 'Notification'",
      "class_g = 'Conky'",
      "class_g ?= 'Notify-osd'",
      "class_g = 'Cairo-clock'",
      "_GTK_FRAME_EXTENTS@:c"
    ];
  #+END_SRC

  It is  also possible  to specify an  X geometry that  describes the  region in
  which shadows  should not  be painted in,  such as a  dock window  region. For
  example,
  #+BEGIN_SRC conf :tangle no
    # shadow-exclude-reg = "x10+0+0"
  #+END_SRC
  would make  the 10  pixels at  the bottom of  the screen  not have  any shadow
  painted on.
  | Default value | ~""~ |
  #+BEGIN_SRC conf :tangle no
    shadow-exclude-reg = ""
  #+END_SRC

  Finally,  it is  also possible  to crop  the  shadow of  a window  fully on  a
  particular Xinerama screen to the screen.
  - Default value :: ~false~
  #+BEGIN_SRC conf
    xinerama-shadow-crop = false
  #+END_SRC

** Deprecated options
   :PROPERTIES:
   :HEADER-ARGS:conf: :tangle no
   :CUSTOM_ID: Shadows-Deprecated_options-da215d5a
   :END:
   Options in this subheader *will not* be exported to my configuration file.

   Thanks  to this  value, Picom  can  avoid drawing  shadows on  dock or  panel
   windows.  This option  is deprecated,  and  users should  use the  ~wintypes~
   option in their config file instead.
   | Default value | ~false~ |
   #+BEGIN_SRC conf
     no-dock-shadow = false;
   #+END_SRC

   This option allows Picom not to draw on drag-and-drop windows. This option is
   deprecated, and users  should use the ~wintypes~ option in  their config file
   instead.
   | Default value | ~false~ |
   #+BEGIN_SRC conf
     no-dnd-shadow = false;
   #+END_SRC

   ~shadow-ignore-shaped~ is also  deprecated. It used to indicate  Picom not to
   paint  shadows on  shaped windows.  Note  shaped windows  here means  windows
   setting their  shape through X  Shape extension. Those using  ARGB background
   are beyond Picom’s control. Since it is deprecated, you could instead use
   #+BEGIN_SRC conf :tangle no
     shadow-exclude = 'bounding_shaped'
   #+END_SRC
   or
   #+BEGIN_SRC conf :tangle no
     shadow-exclude = 'bounding_shaped && !rounded_corners'
   #+END_SRC
   | Default value | ~""~ |
   #+BEGIN_SRC conf :tangle no
     shadow-ignore-shaped = ""
   #+END_SRC

* Rounded corners
  :PROPERTIES:
  :CUSTOM_ID: Rounded_corners-33bfcd20
  :END:
  A great feature added by ibhagwan’s fork of compton is the addition of rounded
  corners  from  sdhand’s  fork,  and  the Kawase  blur  (described  [[#Background_blurring-55835066][here]])  from
  tryone144’s fork. Here we can see the declaration of the corners’ radius:
  #+BEGIN_SRC conf
    corner-radius = 9.0;
  #+END_SRC

  It  is also  possible  to  exclude some  windows  from  getting their  corners
  rounded. I personally excluded any window generated by AwesomeWM.
  #+BEGIN_SRC conf
    rounded-corners-exclude = [
      "_NET_WM_WINDOW_TYPE@[0]:a = '_NET_WM_WINDOW_TYPE_DOCK'"
    ];
  #+END_SRC

* Fading
  :PROPERTIES:
  :CUSTOM_ID: Fading-419d8047
  :END:
  Picom has the ability to create some fading effects on windows when opening or
  closing  or when  the opacity  changes. The  following parameter  toggles this
  feature   on   or  off.   However,   its   behavior   can  be   changed   with
  ~no-fading-openclose~.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    fading = true
  #+END_SRC

  These values  controls the opacity  change between  steps while fading  in and
  out.
  | Default value | ~0.028~ (fade-in), ~0.03~ (fade-out) |
  | Min value     | ~0.01~                               |
  | Max value     | ~1.0~                                |
  #+BEGIN_SRC conf
    fade-in-step = 0.09;
    fade-out-step = 0.08;
  #+END_SRC

  This value represents the time between steps in fade steps, in milliseconds.
  | Default value | ~10~ |
  | Min value     | ~1~  |
  #+BEGIN_SRC conf
    fade-delta = 20;
  #+END_SRC

  It  is possible  to exclude  some  windows that  should  not be  faded with  a
  specified list of conditions.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    fade-exclude = [ "class_g = 'mpv'" ];
  #+END_SRC

  This option allows Picom not to create any fade on windows opening or closing.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    no-fading-openclose = true;
  #+END_SRC

  Finally, this  option is a workaround  for Openbox, Fluxbox and  others by not
  fading destroyed ARGB windows with WM frame.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    no-fading-destroyed-argb = false
  #+END_SRC

* Transparency and opacity
  :PROPERTIES:
  :CUSTOM_ID: Transparency_and_opacity-6c6b36d2
  :END:
  Picom  is also  able  to  create some  opacity  or  transparency for  windows,
  depending on  their state  or on  some user-defined  rules. For  instance, the
  following value describes the opacity of inactive windows.
  | Default value | ~1.0~ |
  | Min value     | ~0.1~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    inactive-opacity = 0.6;
  #+END_SRC

  On the  other hand,  it is possible  to declare a  default opacity  for active
  windows.
  | Default value | ~1.0~ |
  | Min value     | ~0.1~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    active-opacity = 1;
  #+END_SRC

  This however describes the opacity of window titlebars and borders.
  | Default value | ~1.0~ |
  | Min value     | ~0.1~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    frame-opacity = 1.0;
  #+END_SRC

  ~menu-opacity~ describes the opacity for dropdown menus and popup menus.
  | Default value | ~1.0~ |
  | Min value     | ~0.1~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    # menu-opacity = 0.9;
  #+END_SRC

  ~inactive-opacity-override~ allows  the user  to let  inactive opacity  set by
  ~-i~ override the ~_NET_WM_OPACITY_ values of windows.
  | Default value | ~true~ |
  #+BEGIN_SRC conf
    inactive-opacity-override = true;
  #+END_SRC

  While it is possible to alter opacity on inactive windows, it is also possible
  to dim them.
  | Default value | ~1.0~ |
  | Min value     | ~0.1~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    # inactive-dim = 1.0
  #+END_SRC

  It is also  possible to use a  fixed inactive dim value,  instead of adjusting
  according to window opacity.
  | Default value | ~1.0~ |
  | Min value     | ~0.1~ |
  | Max value     | ~1.0~ |
  #+BEGIN_SRC conf
    # inactive-dim-fixed = 1.0
  #+END_SRC

  It is  also possible to  specify a list of  conditions of windows  that should
  always be considered focused.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    focus-exclude = [ "class_g = 'mpv'" ];
  #+END_SRC

  The  user  can   also  specify  a  list  of  opacity   rules,  in  the  format
  ~PERCENT:PATTERN~,  like ~50:name  *= "Firefox"~.  picom-trans is  recommended
  over this.  Note we  don't make  any guarantee  about possible  conflicts with
  other programs that  set ~_NET_WM_WINDOW_OPACITY~ on frame  or client windows.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    opacity-rule = [
      "85:class_g = 'Polybar'",
      # "55:class_g *?= 'Rofi'",
    ];
  #+END_SRC

* Background blurring
  :PROPERTIES:
  :CUSTOM_ID: Background_blurring-55835066
  :END:
  The following  are the  parameters for background  blurring, see  the \*BLUR\*
  section for more information.
  #+BEGIN_SRC conf
    blur: {
      method = "dual_kawase";
      strength = 7;
      background = false;
      background-frame = false;
      background-fixed = false;
    }
  #+END_SRC

  This value enables or disables the blur for the background of semi-transparent
  or  ARGB  windows.  It  has bad  performances  though,  with  driver-dependent
  behavior. The name of the switch may change without prior notifications.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    blur-background = true;
  #+END_SRC

  Blur background of windows when the window  frame is not opaque. If true, this
  implies the value ~true~ for ~blur-background~.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    blur-background-frame = true;
  #+END_SRC

  The following determines whether to use fixed blur strength rather than
  adjusting according to window opacity.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    blur-background-fixed = false;
  #+END_SRC

  Specify     the    blur     convolution     kernel,     with    the     format
  ~"5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1"~.
  | Default value | ~""~ |
  #+BEGIN_SRC conf
    # blur-kern = "3x3box";
    blur-kern = "5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1";
  #+END_SRC

  It is possible to write exclude conditions for background blur.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    blur-background-exclude = [
      "window_type = 'desktop'",
      "class_g = 'Polybar'",
      "_GTK_FRAME_EXTENTS@:c"
    ];
  #+END_SRC
* General settings
  :PROPERTIES:
  :CUSTOM_ID: General_settings-41398de7
  :END:
  Daemonize process. Fork to background after initialization. Causes issues
  with certain (badly-written) drivers.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    daemon = true;
  #+END_SRC

  Picom has  three backends it  can use: ~xrender~, ~glx~,  and ~xr_glx_hybrid~.
  GLX backend is typically much faster but depends on a sane driver.
  | Default value | ~xrender~ |
  #+BEGIN_SRC conf
    backend = "glx";
  #+END_SRC

  This enables or disables VSync.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    vsync = true;
  #+END_SRC

  Enable remote control via D-Bus. See  the *D-BUS API* section below for more
  details.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    dbus = false;
  #+END_SRC

  Try to  detect WM windows (a  non-override-redirect window with no  child that
  has ~WM_STATE~) and markz them as active.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    mark-wmwin-focused = true;
  #+END_SRC


  Mark  override-redirect  windows  that  doesn't   have  a  child  window  with
  ~WM_STATE~ focused.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    mark-ovredir-focused = true;
  #+END_SRC

  Try to  detect windows  with rounded  corners and  don't consider  them shaped
  windows. The accuracy is not very high, unfortunately.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    detect-rounded-corners = true;
  #+END_SRC

  Detect ~_NET_WM_OPACITY~  on client  windows, useful  for window  managers not
  passing ~_NET_WM_OPACITY~ of client windows to frame windows.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    detect-client-opacity = true;
  #+END_SRC

  Specify refresh  rate of  the screen. If  not specified or  0, picom  will try
  detecting this with X RandR extension.
  | Default value | ~60~ |
  #+BEGIN_SRC conf
    refresh-rate = 60;
  #+END_SRC

  Limit picom to repaint  at most once every 1 /  ~refresh_rate~ second to boost
  performance. This should not be used with
  #+BEGIN_SRC text :tangle no
    vsync drm/opengl/opengl-oml
  #+END_SRC
  as they essentially  does sw-opti's job already, unless you  wish to specify a
  lower refresh rate than the actual value.
  | Default value | ~""~ |
  #+BEGIN_SRC conf
    # sw-opti =;
  #+END_SRC

  Use EWMH  ~_NET_ACTIVE_WINDOW~ to  determine currently focused  window, rather
  than  listening  to  ~FocusIn~/~FocusOut~  event. Might  have  more  accuracy,
  provided that the WM supports it.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    # use-ewmh-active-win = false;
  #+END_SRC

  Unredirect all windows if a full-screen opaque window is detected, to maximize
  performance  for   full-screen  windows.   Known  to  cause   flickering  when
  redirecting/unredirecting  windows. paint-on-overlay  may make  the flickering
  less obvious.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    unredir-if-possible = false;
  #+END_SRC

  Delay before unredirecting the window, in milliseconds.
  | Default value | ~0~ |
  #+BEGIN_SRC conf
    unredir-if-possible-delay = 0;
  #+END_SRC

  Conditions   of  windows   that  shouldn't   be  considered   full-screen  for
  unredirecting screen.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    unredir-if-possible-exclude = [];
  #+END_SRC

  Use  ~WM_TRANSIENT_FOR~ to  group windows,  and consider  windows in  the same
  group focused at the same time.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    detect-transient = true;
  #+END_SRC

  Use  ~WM_CLIENT_LEADER~ to  group windows,  and consider  windows in  the same
  group  focused at  the same  time. ~WM_TRANSIENT_FOR~  has higher  priority if
  detect-transient is enabled, too.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    detect-client-leader = true;
  #+END_SRC

  Resize  damaged region  by  a  specific number  of  pixels.  A positive  value
  enlarges it while a  negative one shrinks it. If the  value is positive, those
  additional pixels  will not be actually  painted to screen, only  used in blur
  calculation, and such.  (Due to technical limitations,  with use-damage, those
  pixels will still be incorrectly painted to screen.) Primarily used to fix the
  line corruption issues of  blur, in which case you should  use the blur radius
  value here (e.g. with a 3x3 kernel, you should use ~--resize-damage 1~, with a
  5x5 one  you use ~--resize-damage  2~, and  so on). May  or may not  work with
  *--glx-no-stencil*. Shrinking doesn't function correctly.
  | Default value | ~1~ |
  #+BEGIN_SRC conf
    resize-damage = 1;
  #+END_SRC

  Specify a list  of conditions of windows that should  be painted with inverted
  color. Resource-hogging, and is not well tested.
  | Default value | ~[]~ |
  #+BEGIN_SRC conf
    invert-color-include = [];
  #+END_SRC

  Disable  the use  of damage  information. This  cause the  whole screen  to be
  redrawn everytime,  instead of the  part of  the screen has  actually changed.
  Potentially  degrades  the performance,  but  might  fix some  artifacts.  The
  opposing option is use-damage
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    use-damage = false;
  #+END_SRC

  Use X Sync fence to sync clients' draw  calls, to make sure all draw calls are
  finished  before  picom starts  drawing.  Needed  on nvidia-drivers  with  GLX
  backend for some users.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    xrender-sync-fence = false;
  #+END_SRC

  Force  all  windows  to  be  painted  with blending.  Useful  if  you  have  a
  glx-fshader-win that could turn opaque pixels transparent.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    force-win-blend = false;
  #+END_SRC

  Do not use EWMH to detect fullscreen  windows. Reverts to checking if a window
  is fullscreen based only on its size and coordinates.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    no-ewmh-fullscreen = false;
  #+END_SRC

  Dimming  bright windows  so their  brightness doesn't  exceed this  set value.
  Brightness of a window is estimated by  averaging all pixels in the window, so
  this could  comes with a  performance hit. Setting  this to 1.0  disables this
  behaviour. Requires ~--use-damage~ to be disabled.
  | Default value | ~1.0~ |
  #+BEGIN_SRC conf
    max-brightness = 1.0;
  #+END_SRC

  Make transparent windows  clip other windows like  non-transparent windows do,
  instead of blending on top of them.
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    transparent-clipping = false;
  #+END_SRC

  Set the log level. Possible values are:
  - ~trace~
  - ~debug~
  - ~info~
  - ~warn~
  - ~error~
  in increasing level  of importance. Case doesn't matter. If  using the "TRACE"
  log level,  it's better to  log into a file  using ~--log-file~, since  it can
  generate a huge stream of logs.
  | Default value | ~"debug"~ |
  #+BEGIN_SRC conf
    log-level = "warn";
  #+END_SRC

  Set the log file. If ~--log-file~ is  never specified, logs will be written to
  stderr. Otherwise, logs will to written to  the given file, though some of the
  early logs might still be written to the stderr. When setting this option from
  the config file, it is recommended to use an absolute path.
  | Default value | ~''~ |
  #+BEGIN_SRC conf
    # log-file = '/path/to/your/log/file';
  #+END_SRC

  Show all X errors (for debugging)
  | Default value | ~false~ |
  #+BEGIN_SRC conf
    # show-all-xerrors = false;
  #+END_SRC

  Write process ID to a file.
  | Default value | ~''~ |
  #+BEGIN_SRC conf
    # write-pid-path = '/path/to/your/log/file';
  #+END_SRC

  Window type settings.  ~WINDOW_TYPE~ is one of the 15  window types defined in
  EWMH standard:
  - ~"unknown"~
  - ~"desktop"~
  - ~"dock"~
  - ~"toolbar"~
  - ~"menu"~
  - ~"utility"~
  - ~"splash"~
  - ~"dialog"~
  - ~"normal"~
  - ~"dropdown_menu"~
  - ~"popup_menu"~
  - ~"tooltip"~
  - ~"notification"~
  - ~"combo"~
  - ~"dnd"~
  Following per window-type options are available:
  - fade, shadow :: Controls window-type-specific shadow and fade settings.
  - opacity :: Controls default opacity of the window type.
  - focus :: Controls whether the window of this type is to be always considered
    focused. (By default, all window types except "normal" and "dialog" has this
    on.)
  - full-shadow  :: Controls  whether shadow  is drawn  under the  parts of  the
    window that you  normally won't be able  to see. Useful when  the window has
    parts of it transparent, and you want shadows in those areas.
  - redir-ignore :: Controls whether this type of windows should cause screen to
    become   redirected   again   after   been   unredirected.   If   you   have
    unredir-if-possible  set,   and  doesn't   want  certain  window   to  cause
    unnecessary screen redirection, you can set this to `true`.
  #+BEGIN_SRC conf
    wintypes:
    {
      tooltip = { fade = true; shadow = true; opacity = 0.75; focus = true; full-shadow = false; };
      dock = { shadow = false; }
      dnd = { shadow = false; }
      popup_menu = { opacity = 0.8; }
      dropdown_menu = { opacity = 0.8; }
    };
  #+END_SRC

** GLX backend-specific options
   :PROPERTIES:
   :CUSTOM_ID: General_settings-GLX_backend-specific_options-43892981
   :END:
   Avoid using stencil buffer, useful if  you don't have a stencil buffer. Might
   cause  incorrect  opacity  when  rendering  transparent  content  (but  never
   practically happened) and may not work with blur-background. Tests show a 15%
   performance boost. Recommended.
   | Default value | ~false~ |
   #+BEGIN_SRC conf
     glx-no-stencil = true;
   #+END_SRC

   Avoid rebinding pixmap  on window damage. Probably  could improve performance
   on rapid window content changes, but is known to break things on some drivers
   (LLVMpipe, xf86-video-intel, etc.). Recommended if it works.
   | Default value | ~false~ |
   #+BEGIN_SRC conf
     glx-no-rebind-pixmap = false;
   #+END_SRC

   Use  specified  GLSL  fragment  shader for  rendering  window  contents.  See
   ~compton-default-fshader-win.glsl~                                        and
   ~compton-fake-transparency-fshader-win.glsl~ in the source tree for examples.
   | Default value | ~''~ |
   #+BEGIN_SRC conf :tangle no
     glx-fshader-win = '';
   #+END_SRC
