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Re: [Gnash-dev] Update region detection?

From: strk
Subject: Re: [Gnash-dev] Update region detection?
Date: Mon, 9 Oct 2006 11:10:03 +0200

On Fri, Oct 06, 2006 at 08:47:36PM +0200, Udo Giacomozzi wrote:
> Hi,
> does Gnash contain / is it planned that Gnash will detect the screen
> region (upper-left and lower-right coordinates) where characters did
> change visible?
> Currently Gnash seems to redraw each frame from ground up even if just
> a small portion of the screen did change and even if there was no
> change at all (ex. stopped movie).
> This would *really* speed up rendering.

I don't think there's any such support.
For 'visible' changes I think there's some transparent support
trough the different GUIS, but the 'stopped movie' handling (and
also backgrounds) I think is missing.

I've been thinking about this from the start, but I'm not really
a graphic person, so wouldn't know how to proceed. 
My idea was to keep all layers in seperate "drawables" and overlay
them as needed. Probably the "caching" feature does something similar


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