A private fork of wlroots

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Simon Ser d71ed635b9 backend/drm: force linear layout for multi-GPU buffers Some buffers need to be copied across GPUs. Such buffers need to be allocated with a format and modifier suitable for both the source and the destination. When explicit modifiers aren't supported, we were forcing the buffers to be allocated with a linear layout, because implicit modifiers aren't portable across GPUs. All is well with this case. When explicit modifiers are supported, we were advertising the whole list of destination modifiers, in the hope that the source might have some in common and might be able to allocate a buffer with a more optimized layout. This works well if the source supports explicit modifiers. However, if the source doesn't, then wlr_drm_format_intersect will fallback to implicit modifiers, and everything goes boom: the source uses a GPU-specific tiling and the destination interprets it as linear. To avoid this, just force linear unconditionally. We'll be able to revert this once we have a good way to indicate that an implicit modifier isn't supported in wlr_drm_format_set, see [1]. [1]: https://github.com/swaywm/wlroots/pull/2815 Closes: https://github.com/swaywm/wlroots/issues/3030		4 years ago
.builds	ci: make Meson warnings fatal	4 years ago
backend	backend/drm: force linear layout for multi-GPU buffers	4 years ago
docs	render: introduce WLR_RENDERER in wlr_renderer_autocreate_with_drm_fd	4 years ago
examples	move wlr_box from /types to /util	4 years ago
include	seat: add wlr_seat_touch_{send,notify}_frame	4 years ago
protocol	xdg-activation-v1: new protocol implementation	4 years ago
render	move wlr_box from /types to /util	4 years ago
tinywl	Stop specifying xkb_rule_names	4 years ago
types	Fix invalid uses of wl_array_for_each	4 years ago
util	move wlr_box from /types to /util	4 years ago
xcursor	xcursor: fix CVE-2013-2003	4 years ago
xwayland	xwayland: improve startup log message	4 years ago
.editorconfig	Set .editorconfig ident_size	6 years ago
.gitignore	Remove rootston	5 years ago
CONTRIBUTING.md	contributing: add link to IRC web chat	4 years ago
LICENSE	Update LICENSE year (MIT license)	7 years ago
README.md	readme: fix broken IRC web client link	4 years ago
meson.build	build: use meson.global_build_root()	4 years ago
meson_options.txt	render: make GLES2 renderer optional	4 years ago
wlroots.syms	build: simplify version script	4 years ago

README.md

wlroots

Pluggable, composable, unopinionated modules for building a Wayland compositor; or about 50,000 lines of code you were going to write anyway.

wlroots provides backends that abstract the underlying display and input hardware, including KMS/DRM, libinput, Wayland, X11, and headless backends, plus any custom backends you choose to write, which can all be created or destroyed at runtime and used in concert with each other.
wlroots provides unopinionated, mostly standalone implementations of many Wayland interfaces, both from wayland.xml and various protocol extensions. We also promote the standardization of portable extensions across many compositors.
wlroots provides several powerful, standalone, and optional tools that implement components common to many compositors, such as the arrangement of outputs in physical space.
wlroots provides an Xwayland abstraction that allows you to have excellent Xwayland support without worrying about writing your own X11 window manager on top of writing your compositor.
wlroots provides a renderer abstraction that simple compositors can use to avoid writing GL code directly, but which steps out of the way when your needs demand custom rendering code.

wlroots implements a huge variety of Wayland compositor features and implements them right, so you can focus on the features that make your compositor unique. By using wlroots, you get high performance, excellent hardware compatibility, broad support for many wayland interfaces, and comfortable development tools - or any subset of these features you like, because all of them work independently of one another and freely compose with anything you want to implement yourself.

Check out our wiki to get started with wlroots. Join our IRC channel: #sway-devel on Libera Chat.

wlroots is developed under the direction of the sway project. A variety of wrapper libraries are available for using it with your favorite programming language.

Building

Install dependencies:

meson
wayland
wayland-protocols
EGL
GLESv2
libdrm
GBM
libinput
xkbcommon
udev
pixman
libseat

If you choose to enable X11 support:

xwayland (build-time only, optional at runtime)
libxcb
libxcb-render-util
libxcb-wm
libxcb-errors (optional, for improved error reporting)

Run these commands:

meson build/
ninja -C build/

Install like so:

sudo ninja -C build/ install

Contributing

See CONTRIBUTING.md.