[Bug 57584] New: 8-bit color mode is broken in Wine 9.11 and later

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WineHQ Bugzilla

24 Dec 2024 24 Dec '24

7:51 a.m.

https://bugs.winehq.org/show_bug.cgi?id=57584

Bug ID: 57584 Summary: 8-bit color mode is broken in Wine 9.11 and later Product: Wine Version: 9.11 Hardware: x86-64 OS: Linux Status: NEW Severity: normal Priority: P2 Component: winex11.drv Assignee: wine-bugs@winehq.org Reporter: alexhenrie24@gmail.com Distribution: ---

Created attachment 77694 --> https://bugs.winehq.org/attachment.cgi?id=77694 Regedit on Wine 9.22 in Xephyr

Similar to Bug 48088, palette colors are being mapped incorrectly again. Steps to reproduce:

1. In one terminal, run `Xephyr :2 -ac -screen 800x600x8`

2. In a second terminal, run `DISPLAY=:2 openbox`

3. In a third terminal, run `DISPLAY=:2 wine regedit`

`git bisect` says:

commit 6ace92e0cafcc381f324fc831f3006fb15db4b4e (HEAD) Author: Rémi Bernon rbernon@codeweavers.com AuthorDate: Mon Jun 3 17:48:30 2024 +0200 Commit: Alexandre Julliard julliard@winehq.org CommitDate: Mon Jun 3 23:24:59 2024 +0200

winex11: Create a HBITMAP for the allocated surface pixels.

dlls/winex11.drv/bitblt.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------- 1 file changed, 58 insertions(+), 19 deletions(-)

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WineHQ Bugzilla

24 Dec 24 Dec

7:52 a.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Alex Henrie alexhenrie24@gmail.com changed:

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WineHQ Bugzilla

7:52 a.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Alex Henrie alexhenrie24@gmail.com changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |rbernon@codeweavers.com

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WineHQ Bugzilla

8:38 a.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

--- Comment #1 from Rémi Bernon rbernon@codeweavers.com --- I'm curious, what is the use case for non-32bit (more specifically 8/16bit) host display modes?

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WineHQ Bugzilla

11:15 a.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

mrdeathjr28@yahoo.es changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |mrdeathjr28@yahoo.es

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WineHQ Bugzilla

4:13 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

--- Comment #2 from Alex Henrie alexhenrie24@gmail.com --- There are quite a few 90's games that demand 8-bit color mode: Bug 46666 is one example. That's why Windows has a "Reduced color mode" checkbox among its compatibility options. See https://gitlab.winehq.org/wine/wine/-/wikis/256-Color-Mode for more information.

It wouldn't be as big of a problem if Wine could emulate 8-bit color mode in the X11 driver, transparently translating 8-bit colors to 32-bit colors like in Windows's compatibility mode.

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WineHQ Bugzilla

11:01 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Fabian Maurer dark.shadow4@web.de changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |dark.shadow4@web.de

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WineHQ Bugzilla

2 Jan 2 Jan

10:11 a.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

--- Comment #3 from Rémi Bernon rbernon@codeweavers.com --- I thought we were emulating 8bit display mode already, but maybe only for GDI rendering and we're then missing it on the GL/VK side.

As we're likely going to move towards more virtualization of the GL/VK rendering (for DPI scaling, compositing, etc) this use case would be addressed that way, and I'm not sure it's worth supporting such exotic host display server configuration.

Anyway, it was working before, I'll have a look.

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WineHQ Bugzilla

7 Jan 7 Jan

10:14 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Rémi Bernon rbernon@codeweavers.com changed:

--- Comment #4 from Rémi Bernon rbernon@codeweavers.com --- This should be working better with 9dc80fb036a59ea9140a8413af327672d51eb840. The color mapping is still slightly different from before for some reason, but I think the window surfaces were previously using 8bpp DIB without a color table, which doesn't seem to be possible with the HBITMAP that is now used as an interface.

It's still possible to force something closer to the old behavior with X server side GDI drawing (ClientSideGraphics = N in X11 Driver registry options), but looking at regedit and winecfg it didn't seem really necessary and things are readable enough.

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WineHQ Bugzilla

10 Jan 10 Jan

9:23 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Alexandre Julliard julliard@winehq.org changed:

What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |CLOSED

--- Comment #5 from Alexandre Julliard julliard@winehq.org --- Closing bugs fixed in 10.0-rc5.

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WineHQ Bugzilla

8 Mar 8 Mar

11:41 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

--- Comment #6 from Alex Henrie alexhenrie24@gmail.com --- Created attachment 78186 --> https://bugs.winehq.org/attachment.cgi?id=78186 About Wine on Wine 10.3 in Xephyr

The situation is arguably better now, but it's not like it was before the regression. Some colors are correct, but others still seem to be chosen at random. Take for example the green splotch on the wineglass on the About tab in winecfg, and the green text on the Apply button.

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WineHQ Bugzilla

11:45 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

--- Comment #7 from Alex Henrie alexhenrie24@gmail.com --- Created attachment 78187 --> https://bugs.winehq.org/attachment.cgi?id=78187 Audio config on Wine 10.3 in Xephyr with client-side graphics

ClientSideGraphics=N isn't any better overall: Although it makes the text more legible in some places (like the tab titles), it causes some text to render as black on a black background which is completely unreadable.

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WineHQ Bugzilla

11:46 p.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Alex Henrie alexhenrie24@gmail.com changed:

--- Comment #8 from Alex Henrie alexhenrie24@gmail.com --- Reopening because the issue was not fully resolved.

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WineHQ Bugzilla

9 Mar 9 Mar

12:28 a.m.

New subject: [Bug 57584] 8-bit color mode is broken in Wine 9.11 and later

https://bugs.winehq.org/show_bug.cgi?id=57584

Alex Henrie alexhenrie24@gmail.com changed:

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