Hi Gian Lorenzo,
How did you compiled directfb? Or are you using debian packages?
On Tue, Jul 24, 2012 at 8:38 AM, Gian Lorenzo Meocci <glmeo...@gmail.com> wrote:
> Hi,
>
> I am writing a C program for my Rasppberry PI unsign directfb 1.2.1 to show
> a series of image like a "slideshow". I have a problem with double
> buffering, this is my code:
>
> init (){
>
> DFBSurfaceDescription dsc;
>
> DFBCHECK (DirectFBInit (&argc, &argv));
> DFBCHECK (DirectFBCreate (&dfb));
>
> DFBCHECK (dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN));
> //DFBCHECK (dfb->SetVideoMode(dfb, 1024, 768, DSPF_RGB16));
>
> IDirectFBDisplayLayer *displayer = 0;
> DFBDisplayLayerConfig layerconfig;
> DFBCHECK (displayer->GetConfiguration( displayer, &layerconfig ));
>
> dsc.flags = DSDESC_CAPS;
> dsc.caps = (DFBSurfaceCapabilities) (DSCAPS_PRIMARY | DSCAPS_FLIPPING);
> DFBCHECK (dfb->CreateSurface( dfb, &dsc, &primary ));
> DFBCHECK (primary->GetSize (primary, &screen_width, &screen_height));
> }
>
>
> showimage() {
>
> DFBCHECK (primary->FillRectangle (primary, 0, 0, screen_width,
> screen_height));
> DFBCHECK (primary->Blit (primary, image, NULL, 0, 0));
> DFBCHECK (primary->Flip (primary, NULL, DSFLIP_WAITFORSYNC));
>
> }
>
>
> It work by there is a lot of "flickering". Probabily WAITFORSYNC dosent
> work. Any suggestion?
>
> Thanks
>
> --
> GL
> http://www.meocci.it
>
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>
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