Re: OT: overlay and clipping

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On Friday 11 July 2003 14:00, you wrote:
> Reply to the mail from Franz Reinhardt (fre@xxxxxxxxxx):
> > If the adapter overlays an image from offscreen memory, which is
> > rectangular, how the clipping is done ?
>
> Every pixel in the target area of the overlay which has the special
> drop-out-color which you defined somewhere,
> will be replaced by the overlay image. Pixels with another color
> won´t get replaced and thus show the
> framebuffer contents.
>
> I hope this is what you wanted to know...

Yes, it was the crucial point. 

Again, thanks.

Franz

>
>
>  -Arne
>
> > How can I tell the hardware, when the visible framebuffer is shown
> > and when a piece of the overlay is shown ?
> >
> > TIA,
> >
> > Franz
> >
> >





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