8237b60ec3
The Render extension operates on PictFormats rather than GC, so it bypasses the rootless layer's GC-based alpha protection (ROOTLESS_PROTECT_ALPHA). Depth-24 windows use PICT_x8r8g8b8 where the 'x' tells pixman the high byte is padding it may freely zero. The macOS compositor needs this byte to be 0xFF (opaque). Before each Render operation that targets a rootless window, temporarily upgrade the destination Picture's format from PICT_x8r8g8b8 to PICT_a8r8g8b8. This tells pixman that the alpha channel is significant and must not be optimized away. The format is restored after the operation completes. This parallels how ROOTLESS_PROTECT_ALPHA handles GC operations (by masking alpha out of the planemask) and how ROOTLESS_SAFEALPHA handles PaintWindow (by forcing alpha in solid fills). The save/restore approach is analogous to rootlessGC.c's GC_SAVE / GC_RESTORE pattern. Fixes [2/2]: https://github.com/XQuartz/XQuartz/issues/31 Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com> |
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| .gitlab-ci | ||
| composite | ||
| config | ||
| damageext | ||
| dbe | ||
| dix | ||
| doc | ||
| dri3 | ||
| exa | ||
| fb | ||
| glamor | ||
| glx | ||
| hw | ||
| include | ||
| m4 | ||
| man | ||
| mi | ||
| miext | ||
| os | ||
| present | ||
| pseudoramiX | ||
| randr | ||
| record | ||
| render | ||
| test | ||
| Xext | ||
| xfixes | ||
| Xi | ||
| xkb | ||
| .appveyor.yml | ||
| .dir-locals.el | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .travis.yml | ||
| autogen.sh | ||
| configure.ac | ||
| COPYING | ||
| devbook.am | ||
| docbook.am | ||
| Makefile.am | ||
| manpages.am | ||
| meson.build | ||
| meson_options.txt | ||
| README.md | ||
| SECURITY.md | ||
| xorg-server.m4 | ||
| xorg-server.pc.in | ||
| xserver.ent.in | ||
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the Xorg mailing list:
https://lists.freedesktop.org/mailman/listinfo/xorg
The primary development code repository can be found at:
https://gitlab.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
As with other projects hosted on freedesktop.org, X.Org follows its Code of Conduct, based on the Contributor Covenant. Please conduct yourself in a respectful and civilized manner when using the above mailing lists, bug trackers, etc: