288913 - top part of image is repeated in the bottom part

Status: RESOLVED INCOMPLETE

(Core :: Layout: Images, Video, and HTML Frames, defect)

Description

[Andrew Schultz]

With linux trunk 20050403, many of the images at the URL show the top part of
the image repeated in the bottom part.  If I put a window over the image and
then remove the window, the image looks fine.

This regressed between linux suite trunk builds 2005032805 and 2005032905.  The
only thing in that range that looks like a possibility is bug 286813.

Comment 1

[Andrew Schultz]

Attachment: testcase

with this testcase, if I hit shift-reload enough times, at least one of the
images will have the top part repeated in the bottom.  I'll attach a
screenshot.

Comment 2

[Andrew Schultz]

Attachment: this is the testcase image on the right

Comment 3

[Andrew Schultz]

backing out bug 173051 fixed it for me.

Comment 4

[Robert O'Callahan (:roc) (email my personal email if necessary)]

That is very strange.

Comment 5

[Martijn Wargers (dead)]

I'm not seeing the bug in windows, but it might be worth to know, that I (almost
every time) see for a fraction of a second a small white line approximately at
the same height as where the testcase image is repeated.

Comment 6

[Andrew Schultz]

I'm also noticing that (for the images that are broken) there's a white line on
the right side inside the blue border.

Comment 7

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Could this be impact from bug 254659?

Comment 8

[Benjamin Smedberg]

This bug sucks and a patch would be nice, but I don't think we have the manpower
to block on it.

Comment 9

[Boris Zbarsky [:bzbarsky]]

I think this is a 1.8 layout regression that we should really try to fix in 1.8...

Comment 10

[Asa Dotzler [:asa]]

Does this affect trunk Firefox (GTK2) builds?

Comment 11

[Robert O'Callahan (:roc) (email my personal email if necessary)]

It can manifest on trunk, I think, although I don't usually see it. It's really
difficult to fix because the GTK image scaling code is really broken. I want to
just ignore it --- the new Thebes graphics code will make this go away by itself.

Comment 12

[Andrei Purice]

Hey Andrew,
Can you still reproduce this issue? The test case doesn't open anything for me.

Comment 13

[Andrei Purice]

Marking this as Resolved > Incomplete since the last activity on this issue was 17 years ago and it might not be relevant anymore.
Feel free to re-open if the issue is still reproducible on your end in the latest FF versions.