Le Fri, 15 May 2009 15:26:42 +0300, Lucian Branescu <[email protected]> a écrit:
> This is very interesting, similar to the problem Qt used to have on > Maemo. > > I was always surprised by report of <canvas> being slow on the XO, > it's probably the fastest and the lowest overhead drawing technology > available to JavaScript. It's true it's the fastest and the lowest overhead drawing technology available to JavaScript - which is really the reason I picked it for the development of the paint tool. I wouldn't agree with the idea of Canvas being actually (too) slow on the XO, nor on desktops. Once I changed the DPI to 96 on the XO, I was rather amazed / very pleased by the performance of the drawing tool. It's almost as fast as on the desktop. Surely, the Canvas drawing performance should be something we all desire to improve, constantly. ;) Yet, it looks like the main performance hit on the XO comes from the DPI setting. The bilinear rescaling of the Canvas element being performed by Gecko slows things very much. We need to work around this issue somehow. Would the experience of making Qt faster on Maemo provide us with anything of use in this case? (it seems to me it's unlikely, but ... it never hurts to ask) -- Mihai Sucan http://www.robodesign.ro _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
