Thread: [BETA RELEASE] PhoneME Advanced (Java Mobile)
View Single Post
DavyP is offline DavyP
2012-03-07 , 23:22
Posts: 306 | Thanked: 603 times | Joined on Jan 2012 @ Belgium
#390
Originally Posted by freemangordon View Post
I have no idea how is your painting structured, but if you do a full QPixmap paint for every midlet window update, then it might be a good idea to set some clipping when painting the pixmap, that should boost the performance significantly (not that it is slow now, but you know, as Pooh says...)
PhoneME does provide midlet display repaint callbacks with
clipping ranges, but they are usually much bigger than the
bounding box of the pixels that have changed that it usually does
not make much of a difference when painting the full midlet
window or just the area within the clipping ranges.

Especially midlets that paint their own UI on a Canvas or
GameCanvas (like Opera Mini or J2ME Polish/LWUIT midlets),
this definitely does not make much of a difference. This was my
experience on Android, I have not tested this on the N900.

So, for the time being, I think the rendering speed is good enough
so I would rather focus on some more interesting features.

Davy