46607 - Crash or rendering problem when load a PNG image with opacity value property in a DIV element

Status: VERIFIED DUPLICATE of bug 33593

(Core Graveyard :: GFX, defect, P3)

Description

[/\/\arcio Galli]

Tested with build: 
wintel98, 2000072008 and Wintel98,Build:2000072420

PNG-alpha is working fine but when opacity value is changed (0.0<x<1.0) in 
a div element including a PNG+alpha image there are some problems:

1) with the following testcase:
http://www.geckonnection.com/wed2/alphatest-opacity.html
Result was crash. These are simple PNG-alpha circles over basic backgrounds. I 
just changed the first DIV element to have opacity:.5 property. 

2) Added to more testcases:

2.1) simple page with one PNG(non-alpha image and opacity:.5):
http://www.geckonnection.com/wed2/png-alpha-opacity/rr.html
Result OKAY.

2.2) simple page with one PNG(alpha and opacity:.5):
http://www.geckonnection.com/wed2/png-alpha-opacity/rr2.html
Result, rendering problem with red colors, etc. 

Please let me know if needed more testcases. I just noted the bugs when 
doing new Geckonnection demonstrations that will be using PNG-alpha images in 
animations and dynamically changing opacity value. Soon  I will file a demo URL 
so we can test png+alpha+opacity in action. 

Marcio

Comment 1

[Thomas Swan]

I cannot verify:  

This works correctly for Win32 build 2000072608 on Win2K.  This may be a Win98 
only issue as there were some issues on bug 36694 regarding the alpha blending 
on Windows98 systems.  I do not have Win98 System available for testing.  Could 
someone please verify?

Someone please add keyword "verifyme"

Comment 2

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

Also works for me (NT4 SP5).

Since 2000.07.24 we checked in a fix for alpha blending in Win98. Try a more 
recent build. (Welcome to the fast pace of Mozilla development :-).)

By the way "rr2.html" is invalid HTML, it has a bogus </div> at the top.

Comment 3

[Peter 'Rufus' Nelson]

WFM on Win98 2000072608.  I opened all 3 testcases, and they just loaded fine
(as far as I can tell).  Defenitly no crash though.

Reporter: if after you get a new build you still see this, please reopen.

Comment 4

[/\/\arcio Galli]

Thanks Robert for the note about the bogus </div> - it's fixed. 
rr2.html with the same problem here with 2000,07,27,08 winNT4.

NOte that the real image rr.png is black to white. I see red to white. 

To illustrate there is another testcase: 

http://taboca.com/worlds/gek/wed2/png-alpha-opacity/rr3.html
Which compares rr.png image with 1.0 opacity with rr.png image with .9 opacity

Agreed no crash this build with NT4. I will test with win98 and file a comment 
here.

Comment 5

[/\/\arcio Galli]

Build: 2000,07,27,08 with Win98 
rr3.html , rr2.html same bug.

Help needed with linux. 

Agreed: there is no crash anymore with 2000072708. Next step I will try to 
animate opacity.

Comment 6

[Roger C. Soares]

Linux i386, build 2000072721, is rendering red.

Comment 7

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

*** This bug has been marked as a duplicate of 33593 ***

Comment 8

[leger]

Adding crash keyword for fix and/or verification escalation

Comment 9

[Chris Petersen]

Marking verified dup of 33593.