263915 - double buffering for changing layers

Status: RESOLVED EXPIRED

(Toolkit :: Form Manager, enhancement)

Description

[Peter Schaefer]

User-Agent:       Mozilla/5.0 (Windows; U; Win98; rv:1.7.3) Gecko/20040913 Firefox/0.10
Build Identifier: Mozilla/5.0 (Windows; U; Win98; rv:1.7.3) Gecko/20040913 Firefox/0.10

Refreshing (big) div's with javascript sometimes causes flickering.


Reproducible: Always
Steps to Reproduce:
1. tell javascript to build a table 32x32 of images over a black tiled
background image(stars.gif)
2. refresh some div with debug output 
3. during 2.) randomly refill the table about 5-20 times/second.

Actual Results:  
Flickering. Not much, but suboptimal

Expected Results:  

IMHO It would be nice if FireFox switched on double-buffering for layers/div
that are repeatedly(the second time?!) changed by javascript. 
(Or if you could somehow switch this on manually. But i guess that would break
CSS/javascript standards).



It is not an issue of my PCs speed, since I emulated doublebuffering by using
two divs and switching the double buffer to the foreground by changing the
style.zIndex property. 

I guess it is a valid optimization to not use a doublebuffer, e.g. it saves
memory on small devices, but I'd find it nice.

Comment 1

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

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Comment 2

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.