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Rouven Czerwinski 59b292b691 backend/drm: return true on test if no crtc 
This should fix the following backtrace, seen on my desktop with one
output disabled:

  #0  atomic_crtc_commit (conn=0x270f5c0, state=0x270f6d0, flags=0, test_only=<optimized out>) at ../backend/drm/atomic.c:178
          drm = 0x1ae9c10
          output = 0x270f5c0
          crtc = 0x0
          modeset = false
          active = false
          mode_id = 43989232
          gamma_lut = 0
          prev_vrr_enabled = <optimized out>
          vrr_enabled = <optimized out>
          atom = {req = 0x270f5c0, failed = 48}
          ok = <optimized out>
  #1  0x00007f1104f33128 in drm_crtc_commit (conn=conn@entry=0x270f5c0, state=state@entry=0x270f6d0, flags=flags@entry=0, test_only=test_only@entry=true) at ../backend/drm/drm.c:339
          __PRETTY_FUNCTION__ = "drm_crtc_commit"
          drm = <optimized out>
          crtc = 0x0
          ok = <optimized out>
  #2  0x00007f1104f34e6c in drm_connector_test (output=output@entry=0x270f5c0) at ../backend/drm/drm.c:488
          conn = 0x270f5c0
          unsupported = <optimized out>
  #3  0x00007f1104f35424 in drm_connector_commit (output=0x270f5c0) at ../backend/drm/drm.c:578
          conn = 0x270f5c0
  #4  0x00007f1104f600b7 in wlr_output_commit (output=output@entry=0x270f5c0) at ../types/wlr_output.c:837
          now = {tv_sec = 7732, tv_nsec = 623813006}
          pre_event = {output = 0x270f5c0, when = 0x7ffecc1be570}
          back_buffer = 0x0
          scale_updated = <optimized out>
          geometry_updated = <optimized out>
          committed = <optimized out>
          event = {output = 0x0, committed = 4401048, when = 0x29f38f0}
  #5  0x0000000000433047 in apply_output_config (oc=oc@entry=0x29f38f0, output=output@entry=0x2710720) at ../sway/config/output.c:431
          wlr_output = 0x270f5c0
          output_box = <optimized out>
  #6  0x0000000000433aaf in apply_output_config_to_outputs (oc=0x2308400) at ../sway/config/output.c:649
          current = 0x29f38f0
          name = <optimized out>
          wildcard = true
          id = "Dell Inc. DELL U2410 F525M9AK0MML\000\060\060\060ACD7\000\000\000\000\000\000\000\220\063\240\002\000\000\000\000L5C\000\000\000\000\000\377\377\377\377\000\000\000\000\377\377\377\377\000\000\000\000\377\377\377\377\000\000\000\000\377\377\377\377\000\000\000\000\355\240E\000\000\000\000\000\377\377\377\377\000\000\000\000@\206+\002\000\000\000\000`\260.\002\000\000\000"
          sway_output = 0x2710720
          tmp = 0x2242030
          seat = <optimized out>
  #7  0x000000000043df6b in cmd_output (argc=<optimized out>, argv=0x2a03390) at ../sway/commands/output.c:108
          error = <optimized out>
          output = <optimized out>
          background = false
  #8  0x0000000000410304 in execute_command (_exec=_exec@entry=0x2975d20 "output * dpms off", seat=0x22a3280, seat@entry=0x0, con=con@entry=0x0) at ../sway/commands.c:291
          res = <optimized out>
          argc = 4
          argv = 0x2a03370
          handler = 0x479230 <handlers+560>
          cmd = <optimized out>
          matched_delim = 0 '\000'
          containers = 0x0
          using_criteria = false
          __PRETTY_FUNCTION__ = "execute_command"
          exec = 0x28f63c0 "output * dpms off"
          head = 0x0
          res_list = 0x2a2e9d0
  #9  0x0000000000418b65 in ipc_client_handle_command (client=client@entry=0x2a6ac80, payload_length=<optimized out>, payload_type=IPC_COMMAND) at ../sway/ipc-server.c:645
          line = <optimized out>
          res_list = <optimized out>
          json = <optimized out>
          length = <optimized out>
          __PRETTY_FUNCTION__ = "ipc_client_handle_command"
          buf = 0x2975d20 "output * dpms off"
  #10 0x000000000041964c in ipc_client_handle_readable (client_fd=<optimized out>, mask=<optimized out>, data=0x2a6ac80) at ../sway/ipc-server.c:267
          pending_length = <optimized out>
          pending_type = <optimized out>
          client = 0x2a6ac80
          read_available = 31
          buf = "i3-ipc\021\000\000\000\000\000\000"
          received = 14
  #11 0x00007f1104fc3492 in wl_event_loop_dispatch () from /nix/store/ridk7k2ka6dbk4ly7qqjgmc523s4fj89-wayland-1.19.0/lib/libwayland-server.so.0
  No symbol table info available.
  #12 0x00007f1104fc1135 in wl_display_run () from /nix/store/ridk7k2ka6dbk4ly7qqjgmc523s4fj89-wayland-1.19.0/lib/libwayland-server.so.0
  No symbol table info available.
  #13 0x000000000041ac10 in server_run (server=server@entry=0x47b0c0 <server>) at ../sway/server.c:261
  No locals.
  #14 0x000000000041a3fc in main (argc=<optimized out>, argv=0x7ffecc1bec68) at ../sway/main.c:395
          verbose = 0
          debug = 0
          validate = 0
          allow_unsupported_gpu = 0
          long_options = {{name = 0x45b516 "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x45ee69 "config", has_arg = 1, flag = 0x0, val = 99}, {name = 0x45b51b "validate", has_arg = 0, flag = 0x0, val = 67}, {
              name = 0x45b524 "debug", has_arg = 0, flag = 0x0, val = 100}, {name = 0x45b3ac "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x45a55c "verbose", has_arg = 0, flag = 0x0, val = 86}, {name = 0x45b52a "get-socketpath",
              has_arg = 0, flag = 0x0, val = 112}, {name = 0x45b539 "unsupported-gpu", has_arg = 0, flag = 0x0, val = 117}, {name = 0x45b549 "my-next-gpu-wont-be-nvidia", has_arg = 0, flag = 0x0, val = 117}, {name = 0x0, has_arg = 0,
              flag = 0x0, val = 0}}
          config_path = 0x0
          usage = 0x45b830 "Usage: sway [options] [command]\n\n  -h, --help", ' ' <repeats 13 times>, "Show help message and quit.\n  -c, --config <config>  Specify a config file.\n  -C, --validate         Check the validity of the config file, th"...
          c = <optimized out>

where the second output is not enabled:

  (gdb) frame 4
  #4  0x00007f1104f600b7 in wlr_output_commit (output=output@entry=0x270f5c0) at ../types/wlr_output.c:837
  837	in ../types/wlr_output.c
  (gdb) p output->enabled
  $3 = false
  (gdb)

The culprit being that since 604674dc54 we
always try to perform a commit, even on a disabled output.
2021-08-17 14:07:51 +02:00
.builds ci: add smoke test 2021-08-08 22:13:33 +02:00
backend backend/drm: return true on test if no crtc 2021-08-17 14:07:51 +02:00
docs render: introduce WLR_RENDERER in wlr_renderer_autocreate_with_drm_fd 2021-04-20 21:14:27 +02:00
examples examples/fullscreen-shell: remove unused render_data.view field 2021-08-06 18:27:31 +02:00
include backend/drm: use addon for wlr_drm_fb 2021-08-17 11:08:45 +02:00
protocol xdg-activation-v1: new protocol implementation 2021-06-02 11:18:25 +02:00
render render/gles2: make wlr_gles2_texture a wlr_buffer addon 2021-08-12 10:22:19 +02:00
tinywl Stop specifying xkb_rule_names 2021-04-19 17:33:28 +02:00
types layer-shell: replace close() with destroy() 2021-08-14 20:25:46 +02:00
util util/addon: find both by owner and impl 2021-08-11 18:12:57 +02:00
xcursor xcursor: fix CVE-2013-2003 2021-05-02 17:04:59 +02:00
xwayland xwayland: do not free cursor in handle_server_ready() 2021-08-17 09:17:59 +02:00
.editorconfig Set .editorconfig ident_size 2019-01-25 11:37:46 +01:00
.gitignore Remove rootston 2019-08-09 08:34:59 +09:00
CONTRIBUTING.md contributing: add link to IRC web chat 2021-05-26 22:21:06 +02:00
LICENSE Update LICENSE year (MIT license) 2018-04-12 21:29:59 -04:00
meson.build build: remove "." from include dirs 2021-08-06 19:44:35 +02:00
meson_options.txt backend: make DRM and libinput backends optional 2021-07-22 09:56:38 -04:00
README.md readme: fix broken IRC web client link 2021-05-26 22:19:41 +02:00
wlroots.syms build: simplify version script 2021-06-17 11:03:21 +02:00

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.