Provided by: libdirectfb-bin_1.7.7-11.1ubuntu2_amd64 
NAME
directfbrc - DirectFB configuration file
DESCRIPTION
The directfbrc file is a configuration file read by all DirectFB applications 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 applications 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 format is A8 because it is the only
format that ensures high quality, fast rendering and low memory consumption at the
same time. Use this option only if your fonts looks strange or if font rendering 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 feature on or off.
block-all-signals
This option activates blocking of all signals, useful for DirectFB daemons (a
DirectFB master application that does nothing 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 protocol.
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 not 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 background, 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 dimensions 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 format 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 module).
[no-]matrox-sgram
Some older Matrox G400 cards have SGRAM and a number of graphics operations are
considerably faster on these cards if this feature 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 translucent 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 performance
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 blitting 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 keying.
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)