[Webkit-unassigned] [Bug 45397] [EFL] Tiled Backing Store for Webkit-Efl

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=45397





--- Comment #5 from Kenneth Rohde Christiansen <kenneth at webkit.org>  2010-09-13 14:19:32 PST ---
Just a few comments before I'm heading to bed...

(In reply to comment #4)
> Unlike the code that were introduced by Qt, this one operates outside WebCore and as the benefit it does support all the features a regular page would need: iframes, frames and other nasty bits that in other would require frames to be flattened. In theory, if Evas was a bit more clever, we could do this in a transparent way... seems that Apple guys do this with their GraphicsCore, but I cannot say for sure.

The frame flattening is not actually due to the tiling, but more due to the touch interaction model where we do not want separate sub areas to scroll separately depending on where you pan.

> The other benefits remains the same: if you scroll you don't have to memmove regions inside the buffer, instead just ask the rendering system (evas or qt) to paint it at another position... with OpenGL you keep textures intact and avoid re-upload, etc.

I believe there is nothing in the WebCore tiling implementation not making this possible. Maybe Antti can give some comments.

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