Re: gEDA-user: KJWaves - new release (a r)

["a r" <nbs.public@xxxxxxxxx>]

On Jan 9, 2008 6:43 PM, Peter Clifton <pcjc2@xxxxxxxxx> wrote:
> > OK, I have assumed that gschem is rendering everything in a "paint"
> > event because of perceived slow redraw.
>
> It kindof was.. it blitted from a back-buffer. (Which it still does).
> Many redraws would update the backbuffer and the main screen at once,
> line by line (causing a re-compositing each time). The fix made for
> 1.3.0 and beyond was to ONLY update the backbuffer, and invalidates the
> main screen buffer. The screen update is deferred until the app hits
> idle, and blits the whole schematic in one go.

I have checked gschem 1.3.0. The rendering is, in fact, very fast now.
There is still some noticeable delay when the scene/backbuffer is
being updated, but the perceived speed is far better than when I tried
gschem last time.

-r.


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