hi,all
   I use DirectFB 1.2.0, but seems dfb use fb instead of devmem, only
see one layer, and no acceleration.
Could someone give me a detailed guide?
thanks a lot.

PS1:
[EMAIL PROTECTED]:~# uname -a
Linux davinci 2.6.10_mvl402 #18 Tue Jun 24 14:23:11 CST 2008 armv5tejl GNU/Linux

PS2:
[EMAIL PROTECTED]:~# dfbinfo

   ~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.0 |~~~~~~~~~~~~~~~~~~~~~~~~~~
        (c) 2001-2008  The world wide DirectFB Open Source Community
        (c) 2000-2004  Convergence (integrated media) GmbH
      ----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2008-07-18 05:03)
(*) Direct/Thread: Started 'VT Switcher' (-1) [CRITICAL OTHER/OTHER 0/0] 
<8388608>...
(*) Direct/Thread: Started 'Keyboard Input' (-1) [INPUT OTHER/OTHER 0/0] 
<8388608>...
(*) DirectFB/Input: Keyboard 0.9 (directfb.org)
(*) DirectFB/Graphics: Generic Software Rasterizer 0.6 (directfb.org)
(*) DirectFB/Core/WM: Default 0.3 (directfb.org)
(*) FBDev/Surface: Allocated 640x480 16 bit LUT8 buffer (index 0) at offset 0 
and pitch 1440.


Screen (00) FBDev Primary Screen            (primary screen)
   Caps: VSYNC POWER_MANAGEMENT

     Layer (00) FBDev Primary Layer             (primary layer)
        Type:    GRAPHICS
        Caps:    SURFACE BRIGHTNESS CONTRAST SATURATION


Input (00) Keyboard                        (primary keyboard)
   Type: KEYBOARD
   Caps: KEYS
   Min. Keycode: 0
   Max. Keycode: 127

[EMAIL PROTECTED]:~# dfbinfo

   ~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.0 |~~~~~~~~~~~~~~~~~~~~~~~~~~
        (c) 2001-2008  The world wide DirectFB Open Source Community
        (c) 2000-2004  Convergence (integrated media) GmbH
      ----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2008-07-18 05:03)
(*) Direct/Thread: Started 'VT Switcher' (-1) [CRITICAL OTHER/OTHER 0/0] 
<8388608>...
(*) Direct/Thread: Started 'Keyboard Input' (-1) [INPUT OTHER/OTHER 0/0] 
<8388608>...
(*) DirectFB/Input: Keyboard 0.9 (directfb.org)
(*) DirectFB/Graphics: Generic Software Rasterizer 0.6 (directfb.org)
(*) DirectFB/Core/WM: Default 0.3 (directfb.org)
(*) FBDev/Surface: Allocated 640x480 16 bit LUT8 buffer (index 0) at offset 0 
and pitch 1440.


Screen (00) FBDev Primary Screen            (primary screen)
   Caps: VSYNC POWER_MANAGEMENT

     Layer (00) FBDev Primary Layer             (primary layer)
        Type:    GRAPHICS
        Caps:    SURFACE BRIGHTNESS CONTRAST SATURATION


Input (00) Keyboard                        (primary keyboard)
   Type: KEYBOARD
   Caps: KEYS
   Min. Keycode: 0
   Max. Keycode: 127

PS3:
[EMAIL PROTECTED]:~# dfbinfo --dfb:system=devmem --dfb:video-phys=0x83000000 
--dfb:video-length=691200

   ~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.2.0 |~~~~~~~~~~~~~~~~~~~~~~~~~~
        (c) 2001-2008  The world wide DirectFB Open Source Community
        (c) 2000-2004  Convergence (integrated media) GmbH
      ----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2008-07-18 05:03)
(!) Davinci/Driver: FBIO_GET_TIMING failed!
    --> Invalid argument
(*) DirectFB/Graphics: Generic Software Rasterizer 0.6 (directfb.org)
(*) DirectFB/Core/WM: Default 0.3 (directfb.org)
(!) IDirectFB_Construct: No layers available! Missing driver?
(#) DirectFBError [DirectFBCreate() failed]: Not supported!


-- 
Deng XueFeng <[EMAIL PROTECTED]>


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