On Wed, 19 Apr 2000, Rub�n wrote:
> On 2000/Apr/19, Andrew Apted wrote:
>
> > Like SDL's "surfaces" ? I.e. non-visible places to draw stuff, maybe
> > blitting them to the visible screen/window at some stage, right ?
> >
> > LibGGI has nothing like that yet (I hope it will someday). The
> > closest it comes is either using a large virtual area and drawing in
> > the off-screen parts, or using multiple frames and drawing in the
> > non-visible frame(s) using ggiSet{Read,Write}Frame.
>
> It isn't so simple. In most cases the offscreen video memory won't
> be enough for you, so, some bitmaps will be there and some other not. There
> should be some cache-like system that keeps in the video m�mory the most
> frequently used bitmaps, and some algorithms to optimize the use of the
> offscreen memory, too, because you will have external fragmentation... It's
> not as trivial as it seems, this is the reason why GGL doesn't have support
> for this stuff yet (although you can do manually if you are brave enough, of
> course).
>
> It would be nice if GGI can do this some day...
A good version of the beginning of this is in the glide2x/3x sources.
If anyone's curious.
(aside - anyone know 3Dfx initialization rules? I'm having a few probs
with fb/glide port)
G'day, eh? :)
- Teunis
