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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