111166 - Mozilla scales lowest (background) layer in GIF-images

Status: RESOLVED FIXED

(Core :: Graphics: ImageLib, defect)

Description

[Alexey Kostarev]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.6) Gecko/20011120
BuildID:    2001112012

GIF-file test.gif has thee layers.
Each layer has size 100x100 pixel.
Whole image hase size 300x100.
Mozilla 0.9.6 (0.9.5 also) scale first layer to size 300x100.

Reproducible: Always
Steps to Reproduce:
1.Look at GIF-file URL: http://www.nevod.ru/images/test.gif


Actual Results:  First layer scaled to 300x100 size

Expected Results:  All layers must have size 100x100.

See also 
http://www.nevod.ru/images/test2.gif
http://www.nevod.ru/

Comment 1

[R.K.Aa.]

dup of bug 86508?

Comment 2

[Karl Johan Kleist]

Build ID: 2001 11 20 03. Windows 2000.

The title bar says "Image 300x100 pixels". I see a big black "3"
on white background, the edges are jagged/antialiased with gray.

Reporter: Could you please give a recipe for how to visually detect
that the rendered image is kaputt. Or does one need to download the image
to file, and use some tool to analyze it?

Does "layer" mean a frame in an animated GIF?

Comment 3

[Boris Zbarsky [:bzbarsky]]

confirming.  the image should not look distorted/pixelated like that. (open the
image in ns4 or any image editor).

Comment 4

[Alexey Kostarev]

Attachment: Detailed description of the bug with screenshots

Detailed description of the bug with screenshots
and additional examples.

Comment 5

[Alexey Kostarev]

Attachment: Three frames image

Comment 6

[Alexey Kostarev]

Attachment: Two layers image

Comment 7

[Alexey Kostarev]

Attachment: One layer image

Comment 8

[Stuart Parmenter]

over to nivedita

Comment 9

[Stuart Parmenter]

fixed with the checkin for bug 86508