As a newbie, my question might be a little too simple, but I still can not get
my answer in the docs and posts.
dfb->layer->window->surface, at which part we can define it (and its followers)
mapped into the on-screen or off-screen memory, instead of system-memory ?
I want to apply the 2D-accelleration operations (blit, fill, etc.), but now I
only can apply them whenever the source and destination parts are all not
system-memory, so I have to disable the backbuffer (or any other necessary)
capabilities.
Is my understanding correct? If not, please correct me.
Thanks.
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