Mailinglist Archive: radeonhd (307 mails)

[Alex Deucher <alexdeucher@xxxxxxxxx>]

On Tue, Feb 10, 2009 at 2:13 PM, Mark van Doesburg
<mark.vandoesburg@xxxxxxxxx> wrote:
>        Matthias Hopf <mhopf@xxxxxxx> wrote:
>
>        It certainly would, because you actually have to wait for the
>        previous 1-pixel-wide copy to finish in order to continue...
>
> That's not what I had in mind. To copy an overlaping area you simply
> copy the entire area to off-screen video-memory. Then copy it from that
> off-screen memory to the final destination in the frame buffer.

I tried that, but got very strange behavior that I can't explain. If
you were to say move a window to the right, the desktop background
would fill in in the exposed area, but the the window contents
wouldn't show up in the newly covered area.  The same thing happened
to the temp copy.

Alex
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