Hi Carlos!
Just dropping by to say that those ideas sound really good.
That can improve GUI responsiveness a lot :)
Anyhow, great work everyone! Synfig is improving a lot lately!
Best regards,
Diego.
On Nov 5, 2013 5:08 PM, "Carlos López González" <[email protected]> wrote:
> Hi!
> I would like to tank you both for the excellent work on the release and
> the development branch.
> Especially for the fixes of the recently code added by me, that I can't
> help to address right now.
>
> Additionally to this I would like to share with you some thoughts that
> were truncated on my last email.
>
> It is related to simplified Cairo. From my point of view, to properly use
> the Cairo render (simplified or not) we should refurbish the render system.
> Currently it is designed to use a surface as the holder of the information
> to pass from one layer to other. Also, when the area to render is
> significative bigger than the displayed area, it splits the render into
> tiles, requesting to a separated thread to render each tile.
>
> In Cairo, tile render is not useful because doing the render through the
> Cairo::Context, render a area full frame is less cost than the tiles that
> fills the area, since there is a context creation for each tile, which
> would overwhelm the resources unnecessarily.
>
> One alternative to tile, is render always full frame in Cairo mode. That's
> what I started to do but it is needed to clip the full frame to match the
> canvas visible area, before send it to render. That's pending to code in my
> branch.
>
> Apart of that, I have more (rough) ideas to improve the render on canvas
> window, that are:
>
> -Layers cache its render result and there is a global compositor that
> blends the layers result altogether. Cached result just remember the
> visible area of the layer within the render description.
> -Multihreading can be layer based and not tile based.
> -Static layers should be rendered only once for a certain render
> description.
> -Zoom in or out should reuse the current render to first give a rough
> render result by scaling the cache. Same apply when using a rotate or scale
> tool over a layer. Initial rough result could be the affine operation over
> the cached render, and later render the result normally.
>
> I hope you consider some of those ideas.
>
> Cheers
>
>
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