Closed Bug 16100 Opened 21 years ago Closed 21 years ago
[BACKGROUND]Table cell with blank GIF as background displays as black
Build ID: 1999101109 Platform: Windows NT To reproduce: Load the attached test case. The empty.gif image used as the background for the table cell displays as black for some reason. This is a problem as it makes mirablis.com look bad; that's on our smoketest list.
Offhand, I'd say this is a good catch. Probably belongs under Compositor, but I'd like to defer to Pam Nunn to decide.
Oddly enough, using the 1999101208 build under NT, the actual site at mirabilis.com now displays correctly, but the test case at schist/icq is still not displaying correctly.
cp: Is schist a local machine? I'm getting nada trying to access it. -p
Assignee: pnunn → dcone
Status: ASSIGNED → NEW
old test urls: http://schist/icq http://www.mirabilis.com I've got a very simple demo of the problem. I've put it as the test url. The image displays in a table background fine as long as it is not tiled in particular way. It seems solely dependent on the size of the area of tiling. I'm reassigning to dcone since I know he has worked on the tiling code. This may well be a duplicate bug. -p
doh. Put the url in the url field, not the status field. doh. -p
*** Bug 22643 has been marked as a duplicate of this bug. ***
*** Bug 18759 has been marked as a duplicate of this bug. ***
Testcase from bug #18759 http://bugzilla.mozilla.org/showattachment.cgi?attach_id=3981 which notes "It seems to be working (in Mozilla build 2000010308) if TD width<364" for that particular configuration Note also that bug #18786 and bug #20165 were marked as DUPL of bug #18759
*** Bug 21098 has been marked as a duplicate of this bug. ***
Testcase from bug #21098 http://bugzilla.mozilla.org/showattachment.cgi?attach_id=3924 Note also that bug #22715 was marked as DUPL of bug #21098 Finally, see also bug #18162 which is for the same painting issue, but uses <TABLE BACKGROUND> instead of <TD BACKGROUND>
*** Bug 23489 has been marked as a duplicate of this bug. ***
*** Bug 23031 has been marked as a duplicate of this bug. ***
*** Bug 24079 has been marked as a duplicate of this bug. ***
Summary: Table cell with blank GIF as background displays as black → [BACKGROUND]Table cell with blank GIF as background displays as black
Background images with transparency can not use general speedup for backgrounds. Fixed.
Status: ASSIGNED → RESOLVED
Closed: 21 years ago
Resolution: --- → FIXED
This bug looks vaguely fixed using the 2.11.00 & 2.10.00 builds on Mac OS, Win32 & Linux; e.g. behavior is equivalent to IE/Navigator. I've went through a handful of the many duplicates of this bug, and they all look okay, too. --- Chris & John, please don't hesitate to also give this a poke if you'd like to be sure. (Especially since I don't recall what the bug originally looked like when manifested. ;)
Status: RESOLVED → VERIFIED
Bummer ... sorry ... there still appears to be a problem (at least with http://bugzilla.mozilla.org/showattachment.cgi?attach_id=3924 from bug #21098. I'll attach three shots of the amazing technicolor effects that are generated by ALT-TABbing Nav4.x over top of the mozilla window and then revealing mozilla again.
Status: VERIFIED → REOPENED
Resolution: FIXED → ---
This was with 2000-02-10-14 win95 (and possibly this is platform-specific but I can't test other platforms. Yet.)
You rock. That said, using the test case in question, I can't reproduce the problem, but I note note display inconsistencies: * 2000-02-11-12 Mac OS: works fine (displays equivalent to IE) * 2000-02-10-08 NT 4.0 SP5: entire background of table containing "foo bar baz" is black * 2000-02-10-08 Linux: a red line of pixels draws through the "Try resizing this window..." text.
What is the problem exactly.. is there a test case? I see the example.. but it does not explain how to reproduce this. All my test cases work fine.. so I am gonna need yours.. and what screen depth you are using, etc. From the description it almost sounds like you are running 8 bit mode.. which currently has a palette problem.. and is logged as another bug.
The test case for the recent screenshot is (originally from bug #21098): http://bugzilla.mozilla.org/showattachment.cgi?attach_id=3924 The steps to reproduce are simply to load the above URL and use ALT-TAB to hide the mozilla window and then reveal it again. Each time (after the initial load), I get a different (incorrect) display of colors for the TD BACKGROUND. (However, as elig noted, he could not reproduce this exactly, but there were some other anomalies with this test case on winNT, mac and linux [although I don't quite see how his description of the linux anomaly is possible ?? :-)]). Perhaps there is something unusual about the particular GIF used (http://www.emt.ee/est/html3/gif/punanetriip.gif) but the testcase displays as intended using Nav4.7 on win95. I am running win95 (4.00.950 B) on a Thinkpad laptop (16 bit -- LCD display -- Cyber9320 PCI display). The driver is XGIW95A.DRV (v1.00 Trident Microsystems). Graphics Hardware Acceleration is set to Full (although I set this to None, rebooted, and could still reproduce). I haven't reviewed all the other testcases for the duplicates of the TD BACKGROUND problem, but will do so now. Let me know what other information you need.
I can't review http://jazz/users/pnunn/publish/badtable.html (of course). http://bugzilla.mozilla.org/showattachment.cgi?attach_id=3981 I can't reproduce and the original URL for bug #18759, http://www.valinux.com/ has changed it's layout. I could get unusual TD BACKGROUND painting bugs for: o http://bugzilla.mozilla.org/showattachment.cgi?attach_id=2081 (cpratt, this bug) o http://www.acppa.org/ the original URL for bug #23031 o http://w1.836.telia.com/~u83603822/mozillabug/bug1.htm the original URL for bug #24079 o http://stantoncollegeprep.org/title.html the original URL for bug #23489 o http://bugzilla.mozilla.org/showattachment.cgi?attach_id=3867 the testcase for bug #22715 In all cases *except* the last one, the initial paint of the page is OK. However, a scroll-down or a hide/reveal of the window will cause a change in color/pattern for the TD BACKGROUND. This may be specific to 16 bit display, or my display hardware (although this is a vanilla configuration for (a slightly older) IBM Thinkpad.)
*** Bug 18657 has been marked as a duplicate of this bug. ***
*** Bug 25682 has been marked as a duplicate of this bug. ***
*** Bug 32602 has been marked as a duplicate of this bug. ***
In Bug 32602 (a dupe) I've linked a test page for this that I hacked out of my 404 error, here's the link <a href="http://www.griffjon.com/errors/404-2.html">http://www.griffjon.com/errors/ 404-2.html</a><br> A Description of the page is: <ul> <li>Incredibly annoying and processor-intensive scrolling background, but it helps display the transparency issues <li>Green griffon logo in top-left with a semi-transparent blue 'fill' (the background should be visible through it with a blue tint) <li> right-aligned table at top right of page with tiled blue semi-transparent gif (tile.gif) <li>Centered table with yellow 'border' and tile fill <li>Within this table, a semi-transparent picture of a woman's head and shoulders(NOT overlayed on top of the blue semi-transparent) </ul> Furthermore, all the semi-transparency graphics are hacked by a checkerboard of pixels from the original and transparent pixels. www.x42.com/koolefant has a discussion on the classic netscape v ie differences in .gif rendering. By interlacing two images the way I've interlaced an image and transparencies, they found thaty netscape will render one and ie the other.
WORKSFORME in 2000-04-16. Could anyone still seeing this please reopen? Gerv
Status: REOPENED → RESOLVED
Closed: 21 years ago → 21 years ago
Resolution: --- → WORKSFORME
Gerv-- It's working for me as well! Kick ass; I believe this is the first browser where all my pages using that transparency trick work! congrats and props to whoever fixed it.
Verified on all platforms. The page displays the same way with IE, Nav 4.74 and Seamonkey.
Status: RESOLVED → VERIFIED
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