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DIRECTFBRC(5)                DirectFB Manual Pages               DIRECTFBRC(5)

NAME
       directfbrc - DirectFB configuration file

DESCRIPTION
       The directfbrc file is a configuration file read by all DirectFB appli-
       cations on startup.  There are two of these: a system-wide  one  stored
       in  /etc/directfbrc and a per-user $HOME/.directfbrc which may override
       system settings.

       Further  customization  is  available  per  executable   (basename   of
       argv[0]): /etc/directfbrc.$0 and a per-user $HOME/.directfbrc.$0

       After config files, the environment variable DFBARGS is parsed.

       The  same  parameters  that  can  be used in the directfbrc file can be
       passed via this variable or on the command-line by prefixing them  with
       --dfb: separated each with a comma.

SYNTAX
       The  directfbrc  file  contains  one  parameter  per line. Comments are
       introduced by a hash sign (#), and continue until the end of the  line.
       Blank lines are ignored.

       Most  parameters  are  switches  that  turn certain features on or off.
       These switches have a no- variant that disables the feature. This  man-
       page describes the positive variant and will also note which setting is
       the compiled-in default.

PARAMETERS
       The following parameters may be specified in the directfbrc file:

       system=<system>
              Specifies the graphics system to use. The default is to use  the
              Linux  frame buffer (fbdev) but you can also run DirectFB appli-
              cations on SDL (sdl).  Other  systems  might  be  added  in  the
              future.

       fbdev=<device>
              Opens the given frame buffer device instead of /dev/fb0.

       busid=<id>
              Specify the bus location of the card. The option is only used if
              DirectFB doesn't have sysfs support  and  if  unspecified  1:0:0
              will  be assumed.  Use this option if the driver fails to detect
              (or incorrectly detects) your card.

       mode=<width>x<height>
              Sets the default screen resolution. If unspecified DirectFB will
              use  the first mode from /etc/fb.modes Some frame buffer devices
              (namely vesafb) don't support mode switches and can only be used
              in the resolution that is set on boot time.

       scaled=<width>x<height>
              Scale the window to this size for 'force-windowed' apps.

       depth=<pixeldepth>
              Sets  the  default pixel depth in bits per pixel. If unspecified
              DirectFB will use the depth specified in  the  first  mode  from
              /etc/fb.modes  DirectFB  supports  color depths of 8, 15, 16, 24
              and 32. Which values are available depends on the  frame  buffer
              device  you are using. Some frame buffer devices (namely vesafb)
              don't support mode switches at all and can only be used  in  the
              pixel depth that is set at boot time.

       pixelformat=<pixelformat>
              Sets  the  default  pixel  format.  This is similar to the depth
              parameter described above but allows more fine-grained  control.
              Possible  values  for pixelformat are LUT8, RGB332, RGB16, RGB24
              and RGB32. Some drivers may also support the more  exotic  pixel
              formats A8, ALUT44, ARGB, ARGB1555, I420, UYVY, YUY2 and YV12.

       session=<num>
              Selects  the multi application world which is joined or created.
              Starting with zero, negative values  force  creation  of  a  new
              world using the lowest unused session number. This will override
              the environment variable "DIRECTFB_SESSION".

       force-slave
              Always enter as a slave, waiting for the master, if not there.

       remote=<host>[:<session>]
              Select the remote session to connect to.

       tmpfs=<directory>
              Uses the given directory (tmpfs mount point) for creation of the
              shared  memory  file  in  multi application mode. This option is
              only useful if the automatic detection  fails  or  if  non-tmpfs
              storage is desired.

       shmfile-group=<groupname>
              Group that owns shared memory files.

       memcpy=<method>
              With  this  option  the  probing  of  memcpy()  routines  can be
              skipped, saving a lot of startup time. Pass "help" for a list of
              possible values.

       primary-layer=<id>
              Selects  which  layer  is  the  "primary  layer", default is the
              first.  Check 'dfbinfo' for a list of layers supported  by  your
              hardware.

       primary-only
              Tell application only about the primary layer.

       quiet  Suppresses  console  output  from  DirectFB. Only error messages
              will be displayed.

       [no-]banner
              Enables the output of the DirectFB banner at startup. This is on
              by default.

       [no-]debug
              Enables  debug  output.  This is on by default but you won't see
              any debug output unless you  compiled  DirectFB  with  debugging
              support.

       [no-]debugmem
              Enable memory allocation tracking.

       [no-]debugshm
              Enable shared memory allocation tracking.

       [no-]trace
              Enable  stack trace support. This is on by default but you won't
              see any trcae output unless you  compiled  DirectFB  with  trace
              support.

       log-file=<name>
              Write all messages to the specified file.

       log-udp=<host>:<port>
              Send all messages via UDP to the specified host and port.

       fatal-level=<level>
              Abort on NONE, ASSERT (default) or ASSUME (incl. assert)

       force-windowed
              Forces  the  primary  surface to be a window. This allows to run
              applications that were written to do  full-screen  access  in  a
              window.

       force-desktop
              Forces  the  primary surface to be the background surface of the
              desktop.

       [no-]hardware
              Turns hardware acceleration on. By default hardware acceleration
              is  auto-detected.  If  you  disable  hardware acceleration, the
              driver for your graphics card will still be loaded and  used  to
              access  additional  display  layers  (if there are any), but all
              graphics operations will be performed by the software  renderer.

       [no-]software
              This option allows to disable software fallbacks.

       [no-]dma
              Turns  DMA  acceleration  on,  if  supported  by  the driver. By
              default DMA acceleration is off.

       [no-]sync
              Flushes all disk buffers before initializing DirectFB. This  can
              be  useful  if  you working with experimental device drivers and
              expect crashes. The default is not to sync.

       [no-]mmx
              The no-mmx options allows to disable the  use  of  MMX  routines
              even  if support for MMX was detected. By default MMX is used if
              is available and support for MMX was compiled in.

       [no-]agp[=mode]
              Turns AGP memory support on. The option enables  DirectFB  using
              the  AGP  memory to extend the amount of video memory available.
              You can specify the AGP mode to use (e.g. 1, 2, 4,  8  or  0  to
              disable agp). By default AGP memory support is off.

       [no-]thrifty-surface-buffers
              Free sysmem instance on xfer to video memory.

       font-format=<format>
              Specify  the  font  format  to  use. Possible values are A1, A8,
              ARGB, ARGB1555, ARGB2554, ARGB4444, AiRGB. The default font for-
              mat  is A8 because it is the only format that ensures high qual-
              ity, fast rendering and low memory consumption at the same time.
              Use this option only if your fonts looks strange or if font ren-
              dering is too slow.

       [no-]sighandler
              By default DirectFB installs a signal handler for  a  number  of
              signals  that  cause an application to exit. This signal handler
              tries to deinitialize the DirectFB engine  before  quitting  the
              application.  Use this option to enable/disable this feature.

       dont-catch=<num>[[,<num>]...]
              As  described  with  the  sighandler option, DirectFB installs a
              signal handler for a number of signals.  By  using  this  option
              you may specify a list of signals that shouldn't be handled this
              way.

       [no-]deinit-check
              By default DirectFB checks if the application has  released  all
              allocated  resources  on  exit.  If  it didn't, it will clean up
              after the application.  This option allows to switch  this  fea-
              ture on or off.

       block-all-signals
              This  option  activates  blocking  of  all  signals,  useful for
              DirectFB daemons (a DirectFB master application that does  noth-
              ing except being the master).

       [no-]vt-switch
              By  default  DirectFB  allocates  a  new  virtual  terminal  and
              switches to it.

       vt-num=<num>
              Use given VT instead of current/new one.

       [no-]vt-switching
              Allow to switch virtual terminals using <Ctrl>+<Alt>+<F?>.  This
              is an experimental feature that is usually disabled; use at your
              own risk.

       [no-]graphics-vt
              Puts the virtual terminal  into  graphics  mode.  This  has  the
              advantage  that  kernel  messages  won't  show up on your screen
              while the DirectFB application is running.

       [no-]vt
              Use VT handling code at all?

       mouse-source=<device>
              Specify the serial mouse device.

       [no-]mouse-gpm-source
              Enables using GPM as mouse input repeater.

       [no-]motion-compression
              Usually DirectFB compresses mouse motion events. This means that
              subsequent  mouse  motions are delivered to the application as a
              single mouse motion event. This leads to a more  responsive  but
              less exact mouse handling.

       mouse-protocol=<protocol>
              Specifies the mouse protocol to use. The following protocols are
              supported:

              MS Two button mouse using the Microsoft mouse protocol.

              MS3 Three button mouse using an extended Microsoft mouse  proto-
              col.

              MouseMan  Three  button mouse using a different extension to the
              Microsoft mouse protocol introduced by Logitech.

              MouseSystems The most commonly used protocol  for  three  button
              mice.

              PS/2 Two/three button mice of the PS/2 series.

              IMPS/2  Two/three button USB mice with scrolling wheel using the
              Microsoft Intellimouse protocol.

              The different protocols for serial mice are  described  in  more
              detail in mouse(4).

       [no-]lefty
              Swaps left and right mouse buttons. Useful for left-handers.

       [no-]capslock-meta
              Map the CapsLock key to Meta. Useful for users of the builtin WM
              without a Meta key on the keyboard (e.g. Window key).

       linux-input-ir-only
              Ignore all non-IR Linux Input devices.

       [no-]linux-input-grab
              Grab Linux Input devices. When a device is grabbed only DirectFB
              will receive events from it. The default is to grab.

       [no-]cursor
              By  default  DirectFB  shows  a mouse cursor when an application
              makes use of windows. This option allows to  switch  the  cursor
              off permanently.  Applications cannot enable it explicitly.

       wm=<wm>
              Specify the window manager to use.

       bg-none
              Completely disables background handling. Doesn't make much sense
              since the mouse and moving windows will leave ugly traces on the
              background.

       bg-color=AARRGGBB
              Controls  the color of the background. The color is specified in
              hexadecimal notation. The alpha value defaults to  full  opacity
              and may be omitted. For example to choose a bright magenta back-
              ground, you'd use bg-color=FF00FF.

       bg-image=<filename>
              Fills the background with the given image from file.  The  image
              is stretched to fit to the screen dimensions.

       bg-tile=<filename>
              Like  bg-image  but  tiles the image to fit to the screen dimen-
              sions instead of stretching it.

       [no-]translucent-windows
              By default DirectFB windows may be translucent. If  you  disable
              this  feature,  windows  are forced to be either fully opaque or
              fully transparent. This is useful if your graphics card  doesn't
              support alpha-transparent blits.

       [no-]decorations
              Enables window decorations if supported by the window manager.

       videoram-limit=<amount>
              Limits  the  amount of Video RAM used by DirectFB. The amount of
              Video RAM is specified in Kilobytes.

       agpmem-limit=<amount>
              Limits the amount if AGP memory used by DirectFB. The amount  of
              AGP memory is specified in Kilobytes.

       screenshot-dir=<directory>
              If  specified DirectFB will dump the screen contents in PPM for-
              mat into this directory when the <Print> key gets pressed.

       disable-module=<modulename>
              Suppress loading of this module. The module name is the filename
              without  the  libdirectfb_  prefix  and  without  extension (for
              example keyboard to disable loading of the keyboard  input  mod-
              ule).

       [no-]matrox-sgram
              Some older Matrox G400 cards have SGRAM and a number of graphics
              operations are considerably faster on these cards if  this  fea-
              ture  is  enabled.  Don't  try to enable it if your card doesn't
              have SGRAM!  Otherwise you'd have to reboot.

       [no-]matrox-crtc2
              If you have a dual head G400/G450/G550 you can use  this  option
              to enable additional layers using the second head.

       matrox-tv-standard=[pal|ntsc]
              Controls the signal produced by the TV output of Matrox cards.

       matrox-cable-type=(composite|scart-rgb|scart-composite)
              Matrox cable type (default=composite).

       h3600-device=<device>
              Use this device for the H3600 TS driver.

       mut-device=<device>
              Use this device for the MuTouch driver.

       penmount-device=<device>
              Use this device for the PenMount driver.

       linux-input-devices=<device>[[,<device>]...]
              Use these devices for the Linux Input driver.

       tslib-devices=<device>[[,<device>]...]
              Use these devices for the tslib driver.

       unichrome-revision=<revision>
              Override  the  hardware  revision  number  used by the Unichrome
              driver.

       i8xx_overlay_pipe_b
              Redirect videolayer to pixelpipe B.

       window-surface-policy=<policy>
              Allows to control where window surfaces  are  stored.  Supported
              values for <policy> are:

              auto  DirectFB  decides depending on hardware capabilities. This
              is the default.

              videohigh Swapping system/video with high priority.

              videolow Swapping system/video with low priority.

              systemonly Window surfaces are stored in system memory.

              videoonly Window surfaces are stored in video memory.

       desktop-buffer-mode=<mode>
              Allows to control the desktop buffer mode. Whenever a window  is
              moved,  opened,  closed, resized or its contents change DirectFB
              recomposites the window stack at the affected  region.  This  is
              done  by  blitting  the windows together that are visible within
              that region. Opaque windows are blitted directly while  translu-
              cent  windows  are blitted using alpha blending or color keying.
              If there's a back buffer the recomposition is not visible  since
              only the final result is copied into the front buffer. Without a
              back buffer each step of the  recomposition  is  visible.   This
              causes noticeable flicker unless all windows are opaque.

              Supported values for <mode> are:

              auto  DirectFB  decides depending on hardware capabilities. This
              is the default. DirectFB chooses a back buffer in  video  memory
              if  the  hardware supports simple blitting (copying from back to
              front buffer). If there's no acceleration at all the back buffer
              is  allocated in system memory since that gives much better per-
              formance for alpha blended recomposition in software and  avoids
              reading  from  the video memory when the result is copied to the
              front buffer.

              backsystem The back buffer is allocated in system  memory.  This
              is  the  recommend choice if your hardware supports simple blit-
              ting but no alpha blending and you are going to have many  alpha
              blended windows.

              backvideo  Front  and back buffer are allocated in video memory.
              It's not required to set this mode explicitly because the 'auto'
              mode  chooses  it  if blits are accelerated. Without accelerated
              blits this mode is not recommended.

              triple Like backvideo except the surface is triple buffered.

              frontonly There is no back buffer. This is the  best  choice  if
              you  are  using opaque windows only and don't use any color key-
              ing.

              windows Special mode with  window  buffers  directly  displayed.
              This mode requires special hardware support.

       vsync-after
              Wait  for the vertical retrace after flipping. The default is to
              wait before doing the flip.

       vsync-none
              Disables polling for vertical retrace.

EXAMPLES
       Here are some examples that demonstrates how the  parameters  described
       above are passed to DirectFB application on the command-line.

       df_neo --dfb:no-hardware
              Starts df_neo without hardware acceleration.

       df_neo --dfb:help
              Lists the DirectFB options that can be passed to df_neo.

OTHER INFO
       The   canonical  place  to  find  informations  about  DirectFB  is  at
       http://www.directfb.org/.   Here  you  can  find  the  FAQ,  tutorials,
       mailing list archives, the CVS tree and can download the latest version
       of the DirectFB library as well as a number of applications.

FILES
       /etc/directfbrc
              system-wide DirectFB configuration file

       $HOME/.directfbrc
              per-user DirectFB configuration file

       /etc/fb.modes
              frame buffer modes file

SEE ALSO
       fb.modes(5), fbset(8), mouse(4), ppm(5)

Version 1.2.9                     03 Mar 2007                    DIRECTFBRC(5)
 

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