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Re: [PATCH v5 0/6] MR9032: opengl32: Support wow64 buffer storage and persistent memory mapping using Vulkan.
by Shmerl (＠shmerl) Nov. 2, 2025

Nov. 2, 2025

FYI, it fixed performance for Vampire: The Masquerade — Redemption (dx7 era game that has to rely on wined3d). Thanks a lot! ![vtm_redemption](/uploads/914f5d7edeed82f4191af32b32fe869b/vtm_redemption.png) -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9032#note_120381

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[PATCH v4 0/6] MR9293: Reparse points, part 1.
by Elizabeth Figura (＠zfigura) Nov. 2, 2025

Nov. 2, 2025

As prescribed some time ago, this attempts to implement correct reparse behaviour simply without attempting at all to make reparse points resolvable Unix symlinks. A reparse point consists two files. For a file whose NT name is "foobar", the contents of the file or directory (and note that a reparse point *can* have arbitrary contents) is stored in a file or directory "foobar?". The contents of the reparse point are stored in a file "foobar*". Both * and ? are valid in POSIX filenames but not NT, so no collision should be possible. The actual file "foobar" does not exist in this case. This is to allow the case where there are no reparse points (which is most common) to work as it currently does, without any extra overhead to check for a reparse point. [Simply guarding this behind FILE_OPEN_REPARSE_POINT does not seem good enough to me; that flag is used for example by many builtin functions like MoveFile().] When failing to locate a path segment "foobar", we check for "foobar*" and attempt to parse and resolve that reparse point. Issues: (1) Since we are manipulating two files, are there any race conditions? I believe there are no meaningful races. Read/write races: - When setting a reparse point, we move the contents file out of the way last, so attempts to open the file before that will see a normal file. Attempts to read the reparse point might see a partial file, but we treat that as failure. - When removing a reparse point from a file, we move the contents file back first, so attempts to open or read will see a normal file. - When deleting a reparse point entirely, we delete the contents first, so attempts to open the file will see neither a normal file nor the contents of the symlink, and fail. Attempts to query attributes don't need to open the contents, only the data, which will either be present or not. Write/write races: - Races involving file deletion don't matter, because deletion doesn't take effect until all handles to an inode are closed. - If we try to simultaneously set the reparse point from two different threads, one will fail with no effect since we create the reparse data file with O_EXCL. - If we try to remove the reparse point while setting it, the contents won't be in the right place and we'll fail. - If we try to remove the reparse point from two different threads, one will fail to move the contents back or delete them. (2) How does this interact with hard links? Creating a hard link to an existing reparse point is not too hard to do; we can just hard link both the data file and the contents file. However, turning an existing hardlinked file into a reparse point cannot work. This is also a limitation of other approaches that have been proposed. For this reason I've elected to forbid hard link interaction for now. One alternative approach that would allow turning hardlinked files into reparse points would be to store the reparse data in xattr. This would be less portable though. -- v4: ntdll: Resolve IO_REPARSE_TAG_MOUNT_POINT during path lookup. https://gitlab.winehq.org/wine/wine/-/merge_requests/9293

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[PATCH v2 0/5] MR9293: Reparse points, part 1.
by Elizabeth Figura (＠zfigura) Nov. 2, 2025

Nov. 2, 2025

As prescribed some time ago, this attempts to implement correct reparse behaviour simply without attempting at all to make reparse points resolvable Unix symlinks. A reparse point consists two files. For a file whose NT name is "foobar", the contents of the file or directory (and note that a reparse point *can* have arbitrary contents) is stored in a file or directory "foobar?". The contents of the reparse point are stored in a file "foobar*". Both * and ? are valid in POSIX filenames but not NT, so no collision should be possible. The actual file "foobar" does not exist in this case. This is to allow the case where there are no reparse points (which is most common) to work as it currently does, without any extra overhead to check for a reparse point. [Simply guarding this behind FILE_OPEN_REPARSE_POINT does not seem good enough to me; that flag is used for example by many builtin functions like MoveFile().] When failing to locate a path segment "foobar", we check for "foobar*" and attempt to parse and resolve that reparse point. Issues: (1) Since we are manipulating two files, are there any race conditions? I believe there are no meaningful races. Read/write races: - When setting a reparse point, we move the contents file out of the way last, so attempts to open the file before that will see a normal file. Attempts to read the reparse point might see a partial file, but we treat that as failure. - When removing a reparse point from a file, we move the contents file back first, so attempts to open or read will see a normal file. - When deleting a reparse point entirely, we delete the contents first, so attempts to open the file will see neither a normal file nor the contents of the symlink, and fail. Attempts to query attributes don't need to open the contents, only the data, which will either be present or not. Write/write races: - Races involving file deletion don't matter, because deletion doesn't take effect until all handles to an inode are closed. - If we try to simultaneously set the reparse point from two different threads, one will fail with no effect since we create the reparse data file with O_EXCL. - If we try to remove the reparse point while setting it, the contents won't be in the right place and we'll fail. - If we try to remove the reparse point from two different threads, one will fail to move the contents back or delete them. (2) How does this interact with hard links? Creating a hard link to an existing reparse point is not too hard to do; we can just hard link both the data file and the contents file. However, turning an existing hardlinked file into a reparse point cannot work. This is also a limitation of other approaches that have been proposed. For this reason I've elected to forbid hard link interaction for now. One alternative approach that would allow turning hardlinked files into reparse points would be to store the reparse data in xattr. This would be less portable though. -- v2: ntdll: Pass attr and nt_name down to lookup_unix_name(). server: Implement FSCTL_GET_REPARSE_POINT. server: Implement FSCTL_DELETE_REPARSE_POINT. server: Implement FSCTL_SET_REPARSE_POINT. ntdll/tests: Fix reparse test failures. https://gitlab.winehq.org/wine/wine/-/merge_requests/9293

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[PATCH v2 0/2] MR9287: uxtheme: Handle NULL options in DrawThemeTextEx().
by Mohamad Al-Jaf (＠maljaf) Nov. 1, 2025

Nov. 1, 2025

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54927 -- v2: uxtheme/tests: Add some DrawThemeTextEx() tests. uxtheme: Handle NULL options in DrawThemeTextEx(). https://gitlab.winehq.org/wine/wine/-/merge_requests/9287

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Re: [PATCH v5 0/6] MR9032: opengl32: Support wow64 buffer storage and persistent memory mapping using Vulkan.
by Jacek Caban (＠jacek) Nov. 1, 2025

Nov. 1, 2025

On Sat Nov 1 18:46:55 2025 +0000, QwertyChouskie wrote: > > Good point, thanks. It does seem possible to use that extension, but I > think we also need to support Nvidia. We could maybe have it as an > alternative, though I’m not sure there are cases where it would actually > help (that is, cases where the extension is available but a sufficient > Vulkan driver isn’t). > r600 (assuming it supports this extension) is certainly one case that > comes to mind for something that is reasonably performant for older > games but doesn't support Vulkan. It also turned out that llvmpipe doesn’t support VK_EXT_map_memory_placed, and GL_AMD_pinned_memory would be a good fit for it. I plan to give that a try. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9032#note_120365

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[PATCH v2 0/1] MR9336: ntdll/tests: Fix reparse test failures.
by Elizabeth Figura (＠zfigura) Nov. 1, 2025

Nov. 1, 2025

-- v2: ntdll/tests: Fix reparse test failures. https://gitlab.winehq.org/wine/wine/-/merge_requests/9336

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[PATCH 0/1] MR9336: ntdll/tests: Fix reparse test failures.
by Elizabeth Figura (＠zfigura) Nov. 1, 2025

Nov. 1, 2025

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/9336

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[PATCH v9 0/3] MR9330: Draft: PickiconDlg
by Matthias Zorn (＠Matthias-Zorn.0178) Nov. 1, 2025

Nov. 1, 2025

Added PickiconDlg dialog resources as a test -- v9: shell32: Implement PickIconDlg function https://gitlab.winehq.org/wine/wine/-/merge_requests/9330

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[PATCH v8 0/2] MR9330: Draft: PickiconDlg
by Matthias Zorn (＠Matthias-Zorn.0178) Nov. 1, 2025

Nov. 1, 2025

Added PickiconDlg dialog resources as a test -- v8: shell32: Implement PickIconDlg function https://gitlab.winehq.org/wine/wine/-/merge_requests/9330

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[PATCH 0/1] MR9329: dlls/sane.ds, dlls/gphoto2.ds: Destroy Progress Dialogs with DestroyWindow instead of EndDialog
by Bernd Herd (＠herdsoft) Nov. 1, 2025

Nov. 1, 2025

The TWAIN data sources sane.ds and gpoto.ds create progress dialogs with the WIN32 CreateDialog API in files ui.c When they need to destroy these windows, they call EndDialog. But EndDialog is meant for Modal Dialogs created by DialogBox, DialogBoxParam, DialogBoxInd and the like. Calling it for dialogs created by CreateDialog is undocumented behaviour. In the end, those progress dialogs are not destroyed (immediatly?) and can still be open when the application program closes the data source with the message. DG_CONTROL / DAT_IDENTITY / MSG_CLOSEDS This can then later cause a segfault if the sane.ds/gpoto2.ds gets unloaded with FreeLibrary so the dialog box procedure is no longer in memory. There is a workaround for this in dlls/twain_32/dsm_ctrl.c:220: ``` /* This causes crashes due to still open Windows, so leave out for now. * FreeLibrary (currentDS->hmod); */ ``` But the TWAIN organization offers their own DSM-Library twaindsm.dll, that does not contain this workaround so segfaults after an otherwise successful scan: https://github.com/twain/twain-dsm Using this patch, progress dialogs are closed with DestroyWindow instead of EndDialog and these segfaults do not occur any more. This would also allow to change the code in dsm_ctrl.c:220 to FreeLibrary the DS module again. I've tested that it works. But there is no evidence that that change would have benefits and it might have other disadvantages. Compatibility of twaindsm.dll with sane.ds requires one of my previous merge requests that are not yet in wine main tree. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9329

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