I am able to change the transparency of text drawn to fb0 by modifying the
values of fb2 manually (cat file > /dev/fb/2)
However when I draw an image on my primary surface (fb0) the transparency of
this image is not changed and always stays as opaque. Here is some of my
code:
static IDirectFBSurface *myimage= NULL;
DFBCHECK (dfb->CreateImageProvider (dfb, "MyImage.PNG", &provider));
DFBCHECK (provider->GetSurfaceDescription (provider, &dsc));
DFBCHECK (dfb->CreateSurface (dfb, &dsc, &myimage));
myimage->SetBlittingFlags(myimage,DSBLIT_BLEND_ALPHACHANNEL);
DFBCHECK (provider->RenderTo (provider, myimage, NULL));
provider->Release (provider);
//Blit the left & right arrows to screen
DFBCHECK (primary->Blit (primary, myimage, NULL, 20, 30));
What do I need to do to make this image also change like text does?
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