416600 - white bars appear when an images is being drawn

Status: RESOLVED DUPLICATE of bug 416217

(Core :: Graphics: ImageLib, defect)

Description

[Adil Allawi]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9b4pre) Gecko/2008020904 Minefield/3.0b4pre
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9b4pre) Gecko/2008020904 Minefield/3.0b4pre

While an image is being drawn as it is also downloading white gaps or bars appear.

Reproducible: Always

Steps to Reproduce:
1. Clear the image cache
2. Visit a web page with large jpeg images (e.g. Flickr)
3. Look at the page as it draws
Actual Results:  
White gaps appear as images loads and draws

Expected Results:  
there should be no gaps

this only appears to happen when an image is downloading at the same time as it is being drawn. If the image draws from the cache there is no problem.

This bug started to happen with a nightly build about two days ago. It also coincides with a fix to speed up jpeg image loading that was integrated into the trunk at the same time (Bug 412396) although I dont know if this is related.

Comment 1

[Adil Allawi]

Attachment: Screenshot of the issue

This is a screenshot of what I see.

Comment 2

[Matthias Versen [:Matti]]

This can't be the product firefox because all the rendering is done by Gecko and that is the Product Core