300521 - Redraw flicker when changing image opacity with JavaScript

Status: RESOLVED DUPLICATE of bug 187608

(Firefox :: General, defect)

Description

[Ian Eure]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4

I programmed a JS image dissolve effect, which I used on the referenced page. It
changes the opacity of two images in a timer loop to dissolve from one image to
another.

In Firefox on Windows and Mac OS X, there is a flicker at the start and end of
the dissolve. The image vanishes for a moment, exposing the white background
behind it. It doesn't do it absolutely every time, but i'd say it does 98% of
the time. There are a few rare occasions where either the start or end of the
effect won't flicker/flash.

It does not happen in Firefox 1.0.4 on Linux, nor does it occur in IE/Win.

Reproducible: Always

Steps to Reproduce:
1. Load the target page (www.ucdelts.com)
2. Wait a few seconds for the dissolve effect to start
3. Notice the flash/flicker at the start and end.

Actual Results:  
Observed a flicker/flash in the effect

Expected Results:  
Images should transition smoothly

Comment 1

[Martijn Wargers (dead)]

This is fixed in the latest nightly trunk build. Please test with that:
http://ftp.scarlet.be/pub/mozilla.org/firefox/nightly/latest-trunk/

*** This bug has been marked as a duplicate of 187608 ***

Comment 2

[Ian Eure]

Confirmed fixed in the nightly build on WinXP & OS X.