DirectFB parameters

static const char *config_usage =
     "DirectFB version " DIRECTFB_VERSION "\n"
     "\n"
     " --dfb-help                      Output DirectFB usage information and exit\n"
     " --dfb:[,]...    Pass options to DirectFB (see below)\n"
     "\n"
     "DirectFB options:\n"
     "\n"
     "  system=                Specify the system (FBDev, SDL, etc.)\n"
     "  fbdev=                 Open instead of /dev/fb0\n"
     "  busid=                     Specify the bus location of the graphics card (default 1:0:0)\n"
     "  mode=x          Set the default resolution\n"
     "  scaled=x        Scale the window to this size for 'force-windowed' apps\n"
     "  depth=             Set the default pixel depth\n"
     "  pixelformat=      Set the default pixel format\n"
     "  surface-shmpool-size=      Set the size of the shared memory pool used\n"
     "                                 for shared system memory surfaces.\n"
     "  session=                  Select multi app world (zero based, -1 = new)\n"
     "  remote=[:]         Set remote host and port to connect to\n"
     "  primary-layer=             Select an alternative primary layer\n"
     "  primary-only                   Tell application only about the primary layer\n"
     "  [no-]banner                    Show DirectFB Banner on startup\n"
     "  [no-]surface-sentinel          Enable surface sentinels at the end of chunks in video memory\n"
     "  force-windowed                 Primary surface always is a window\n"
     "  force-desktop                  Primary surface is the desktop background\n"
     "  [no-]hardware                  Enable/disable hardware acceleration\n"
     "  [no-]software                  Enable/disable software fallbacks\n"
     "  [no-]software-warn             Show warnings when doing/dropping software operations\n"
     "  [no-]software-trace            Show every stage of the software rendering pipeline\n"
     "  [no-]dma                       Enable DMA acceleration\n"
     "  [no-]sync                      Do `sync()' (default=no)\n"
#ifdef USE_MMX
     "  [no-]mmx                       Enable mmx support\n"
#endif
     "  [no-]agp[=]              Enable AGP support\n"
     "  [no-]thrifty-surface-buffers   Free sysmem instance on xfer to video memory\n"
     "  font-format=      Set the preferred font format\n"
     "  [no-]font-premult              Enable/disable premultiplied glyph images in ARGB format\n"
     "  [no-]deinit-check              Enable deinit check at exit\n"
     "  [no-]core-sighandler           Enable/disable core signal handler (for emergency shutdowns)\n"
     "  block-all-signals              Block all signals\n"
     "  [no-]vt-switch                 Allocate/switch to a new VT\n"
     "  vt-num=                   Use given VT instead of current/new one\n"
     "  [no-]vt-switching              Allow Ctrl+Alt+ (EXPERIMENTAL)\n"
     "  [no-]graphics-vt               Put terminal into graphics mode\n"
     "  [no-]vt                        Use VT handling code at all?\n"
     "  mouse-source=          Mouse device for serial mouse\n"
     "  [no-]mouse-gpm-source          Enable mouse input repeated by GPM\n"
     "  [no-]motion-compression        Mouse motion event compression\n"
     "  mouse-protocol=      Mouse protocol\n"
     "  [no-]lefty                     Swap left and right mouse buttons\n"
     "  [no-]capslock-meta             Map the CapsLock key to Meta\n"
     "  linux-input-ir-only            Ignore all non-IR Linux Input devices\n"
     "  [no-]linux-input-grab          Grab Linux Input devices?\n"
     "  [no-]cursor                    Never create a cursor or handle it\n"
     "  [no-]cursor-automation         Automated cursor show/hide for windowed primary surfaces\n"
     "  [no-]cursor-updates            Never show a cursor, but still handle it\n"
     "  wm=                        Window manager module ('default' or 'unique')\n"
     "  init-layer=                Initialize layer with ID (following layer- options apply)\n"
     "  layer-size=x    Set the pixel resolution\n"
     "  layer-format=     Set the pixel format\n"
     "  layer-depth=       Set the pixel depth\n"
     "  layer-buffer-mode=(auto|triple|backvideo|backsystem|frontonly|windows)\n"
     "  layer-bg-none                  Disable background clear\n"
     "  layer-bg-color=AARRGGBB        Use background color (hex)\n"
     "  layer-bg-color-index=   Use background color index (decimal)\n"
     "  layer-bg-image=      Use background image\n"
     "  layer-bg-tile=       Use tiled background image\n"
     "  layer-src-key=AARRGGBB         Enable color keying (hex)\n"
     "  layer-palette-=AARRGGBB Set palette entry at index (hex)\n"
     "  layer-rotate=          Set the layer rotation for double buffer mode (0,90,180,270)\n"
     "  [no-]smooth-upscale            Enable/disable smooth upscaling per default\n"
     "  [no-]smooth-downscale          Enable/disable smooth downscaling per default\n"
     "  [no-]translucent-windows       Allow translucent windows\n"
     "  [no-]decorations               Enable window decorations (if supported by wm)\n"
     "  [no-]startstop                 Issue StartDrawing/StopDrawing to driver\n"
     "  [no-]autoflip-window           Auto flip non-flipping windowed primary surfaces\n"
     "  videoram-limit=        Limit amount of Video RAM in kb\n"
     "  agpmem-limit=          Limit amount of AGP memory in kb\n"
     "  screenshot-dir=     Dump screen content on key presses\n"
     "  video-phys=        Physical start of video memory (devmem system)\n"
     "  video-length=           Length of video memory (devmem system)\n"
     "  mmio-phys=         Physical start of MMIO area (devmem system)\n"
     "  mmio-length=            Length of MMIO area (devmem system)\n"
     "  accelerator=               Accelerator ID selecting graphics driver (devmem system)\n"
     "\n"
     "  [no-]matrox-sgram              Use Matrox SGRAM features\n"
     "  [no-]matrox-crtc2              Experimental Matrox CRTC2 support\n"
     "  matrox-tv-standard=(pal|ntsc|pal-60)\n"
     "                                 Matrox TV standard (default=pal)\n"
     "  matrox-cable-type=(composite|scart-rgb|scart-composite)\n"
     "                                 Matrox cable type (default=composite)\n"
     "  h3600-device=          Use this device for the H3600 TS driver\n"
     "  mut-device=            Use this device for the MuTouch driver\n"
     "  zytronic-device=       Use this device for the Zytronic driver\n"
     "  elo-device=            Use this device for the Elo driver\n"
     "  penmount-device=       Use this device for the PenMount driver\n"
     "  linux-input-devices=[[,]...]\n"
     "                                 Use these devices for the Linux Input driver\n"
     "  tslib-devices=[[,]...]\n"
     "                                 Use these devices for the tslib driver\n"
     "  unichrome-revision=       Override unichrome hardware revision\n"
     "  i8xx_overlay_pipe_b            Redirect videolayer to pixelpipe B\n"
     "  include=          Include the specified file, relative to the current file\n"
     "\n"
     "  max-font-rows=         Maximum number of glyph cache rows (total for all fonts)\n"
     "  max-font-row-width=    Maximum width of glyph cache row surface\n"
     "\n"
     " Window surface swapping policy:\n"
     "  window-surface-policy=(auto|videohigh|videolow|systemonly|videoonly)\n"
     "     auto:       DirectFB decides depending on hardware.\n"
     "     videohigh:  Swapping system/video with high priority.\n"
     "     videolow:   Swapping system/video with low priority.\n"
     "     systemonly: Window surface is always stored in system memory.\n"
     "     videoonly:  Window surface is always stored in video memory.\n"
     "\n"
     " Desktop buffer mode:\n"
     "  desktop-buffer-mode=(auto|triple|backvideo|backsystem|frontonly|windows)\n"
     "     auto:       DirectFB decides depending on hardware.\n"
     "     triple:     Triple buffering (video only).\n"
     "     backvideo:  Front and back buffer are video only.\n"
     "     backsystem: Back buffer is system only.\n"
     "     frontonly:  There is no back buffer.\n"
     "     windows:    Special mode with window buffers directly displayed.\n"
     "\n"
     " Force synchronization of vertical retrace:\n"
     "  vsync-after:   Wait for the vertical retrace after flipping.\n"
     "  vsync-none:    disable polling for vertical retrace.\n"
     "\n";