[SDL] Re: Fast Scrolling
nao at libero.it
Mon Aug 16 11:16:07 PDT 1999
On 15-Ago-99, you wrote:
> The real way to implement a scroller is to adjust the display aperture
> (portion of video memory which is being displayed) dynamically.
That's the way I do vertical scrollers on my old amiga :)
(I have to change some pointers and it's done)
> a more fine-grained application of the process which allows double
> Unfortunately, with modern video cards, the only API that I know of
> that supports this is X11 DGA. When in a window, you have to implement
> scrolling with a full-window copy.
I tried to figure out how to adjust screen pointers in SDL..and in fact
I failed :)
> DirectX only supports page flipping.
I saw several games performs fast (even parallax) scrolling in windows
So...do they update entire screen all the times?
> If someone knows better, please let me know!
mee to :)
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