On Sun, Aug 19, 2012 at 1:59 PM, haithem rahmani
<haithem.rahm...@gmail.com>wrote:
> Hello,
>
> have you tried the ARGB pixelformat?
>
> $>dfbinfo --dfb:pixelformat=ARGB
>
Sadly same result:
(*) FBDev/Mode: Setting 1920x1080 ARGB
(*) FBDev/Mode: Switched to 1920x1080 (virtual 1920x1080) at 32 bit (ARGB),
pitch 8192
(!) DirectFB/FBDev: Could not set gamma ramp --> Invalid argument
(*) FBDev/Mode: Setting 1920x1080 ARGB
(*) FBDev/Mode: Switched to 1920x1080 (virtual 1920x1080) at 32 bit (ARGB),
pitch 8192
(!) DirectFB/FBDev: Could not set gamma ramp --> Invalid argument
The error comes from this call:
if (FBDEV_IOCTL( FBIOPUTCMAP, cmap ) < 0) {
D_PERROR( "DirectFB/FBDev: "
"Could not set gamma ramp" );
return errno2result(errno);
}
/proc/fb is '0 omapdrm' (which is to say the framebuffer is driven by the
omapdrm module) and apparently it chokes on the FBIOPUTCMAP ioctl. I'm
reaching out to the TI guys to see what they have to say as well.
--Chuck
> regards
> Haithem
>
> On Sun, Aug 19, 2012 at 10:39 PM, Chuck McManis
> <chuck.mcma...@gmail.com>wrote:
>
>> Greetings everyone.
>>
>> I'm really happy to have found DirectFB, I'm hoping it will help me to
>> achieve my goals of creating some intelligent digital signs.
>>
>> I'm using a Pandaboard ES, which is running Ubunto 12.04.1 LTS with the
>> TI supplied OMAP drivers. I am not running X11 on this system and Wayland
>> isn't yet supported, but our old friend /dev/fb0 works fine :-)
>>
>> I pulled a copy of DirectFB from git, built it natively using
>> --with-gfxdrivers=omap and it built and installed (woot!) and I can run
>> most of the demos (there are a few things that break from missing data
>> files but that is ok)
>>
>> I would love it if I could get 2D acceleration, not sure if that is from
>> the omap driver or the pvr2d driver (which I did not build, but I could try
>> I suppose).
>>
>> My first question is this one, when I run any dfb program (and dfbinfo as
>> well) I get this error:
>>
>> (*) FBDev/Mode: Setting 1920x1080 RGB32
>> (*) FBDev/Mode: Switched to 1920x1080 (virtual 1920x1080) at 32 bit
>> (RGB32), pitch 8192
>> (!) DirectFB/FBDev: Could not set gamma ramp --> Invalid argument
>> (*) FBDev/Mode: Setting 1920x1080 RGB32
>> (*) FBDev/Mode: Switched to 1920x1080 (virtual 1920x1080) at 32 bit
>> (RGB32), pitch 8192
>> (!) DirectFB/FBDev: Could not set gamma ramp --> Invalid argument
>>
>> This comes from the code in systems/fbdev.c where it has this :
>>
>> D_INFO( "FBDev/Mode: Switched to %dx%d (virtual %dx%d) at %d bit
>> (%s), pitch %d\n",
>> var.xres, var.yres, var.xres_virtual, var.yres_virtual,
>> var.bits_per_pixel,
>> dfb_pixelformat_name(config->format),
>> shared->fix.line_length );
>>
>> if (config->format == DSPF_RGB332)
>> dfb_fbdev_set_rgb332_palette();
>> else
>> dfb_fbdev_set_gamma_ramp( config->format );
>>
>> This seems like it is trying to set a gamma ramp because the
>> config->format value isn't recognized as a truecolor format?
>>
>> --Chuck
>>
>> _______________________________________________
>> directfb-users mailing list
>> directfb-users@directfb.org
>> http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
>>
>>
>
>
> --
> *
> Never say that's "impossible", the word itself says "I'm Possible"
> *
>
>
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