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In output_ensure_buffer() we create a swapchain and attach an empty
buffer to the output if necessary. We do that during the first commit.
This is fine when the first commit enables the output, however this breaks
when the first commit disables the output. A commit which disables an
output and has a buffer attached is invalid (see output_basic_test()), and
makes the DRM backend crash:
00:00:00.780 [wlr] [backend/drm/drm.c:622] connector eDP-1: Turning off
../subprojects/wlroots/backend/drm/drm.c:652:44: runtime error: member access within null pointer of type 'struct wlr_drm_crtc'
AddressSanitizer:DEADLYSIGNAL
=================================================================
==2524==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f22e894afc1 bp 0x7ffe1d57c550 sp 0x7ffe1d57c420 T0)
==2524==The signal is caused by a READ memory access.
==2524==Hint: address points to the zero page.
#0 0x7f22e894afc1 in drm_connector_commit_state ../subprojects/wlroots/backend/drm/drm.c:652
#1 0x7f22e894b1f5 in drm_connector_commit ../subprojects/wlroots/backend/drm/drm.c:674
#2 0x7f22e89e8da9 in wlr_output_commit_state ../subprojects/wlroots/types/output/output.c:756
#3 0x555ab325624d in apply_output_config ../sway/config/output.c:517
#4 0x555ab31a1aa1 in handle_new_output ../sway/desktop/output.c:974
#5 0x7f22e9272f6d in wl_signal_emit_mutable (/usr/lib/libwayland-server.so.0+0x9f6d)
#6 0x7f22e899b012 in new_output_reemit ../subprojects/wlroots/backend/multi/backend.c:161
#7 0x7f22e9272f6d in wl_signal_emit_mutable (/usr/lib/libwayland-server.so.0+0x9f6d)
#8 0x7f22e895a153 in scan_drm_connectors ../subprojects/wlroots/backend/drm/drm.c:1488
#9 0x7f22e893c2e4 in backend_start ../subprojects/wlroots/backend/drm/backend.c:24
#10 0x7f22e892ed00 in wlr_backend_start ../subprojects/wlroots/backend/backend.c:56
#11 0x7f22e8999b83 in multi_backend_start ../subprojects/wlroots/backend/multi/backend.c:31
#12 0x7f22e892ed00 in wlr_backend_start ../subprojects/wlroots/backend/backend.c:56
#13 0x555ab317d5cc in server_start ../sway/server.c:316
#14 0x555ab317748d in main ../sway/main.c:400
#15 0x7f22e783c28f (/usr/lib/libc.so.6+0x2328f)
#16 0x7f22e783c349 in __libc_start_main (/usr/lib/libc.so.6+0x23349)
#17 0x555ab3134c84 in _start (/home/simon/src/sway/build/sway/sway+0x377c84)
Fixes: 3be6658ee7b6 ("output: allocate swapchain on first commit")
Closes: https://github.com/swaywm/sway/issues/7373
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Because wl_buffer.release is per-buffer and not per-commit, the
Wayland backend might create multiple struct wlr_wl_buffer per
struct wlr_buffer. As a result, the wlr_buffer_unlock() call inside
destroy_wl_buffer() can cause another struct wlr_wl_buffer to be
destroyed.
In backend_destroy() we were iterating the list of buffers with
wl_list_for_each_safe(), which is actually not safe in this case:
the next buffer is cached, but might be destroyed as a side-effect
of calling destroy_wl_buffer().
Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3572
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References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/884
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References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/884
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References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/884
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References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/884
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References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/884
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The same X11 window can be used multiple times with a different
wl_surface.
Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3570
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This new function replaces wlr_surface_is_xwayland_surface() and
wlr_xwayland_surface_from_wlr_surface().
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This leaves it up to wlr_xcursor_theme_load() to pick the theme
name.
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"left_ptr" is the X11 name, "default" is the cursor spec name.
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wlr_xcursor_get_resize_name() returns cursor-spec [1] based names
but the default cursor icons shipped in include/xcursor/cursor_data.h
use traditional X cursor names instead.
Compositors that use wlr_xcursor_get_resize_name() to resolve an edge
to a cursor icon name may thus be unable to render appropriate cursor
icons for users that don't have a cursor-spec compliant cursor theme
installed on their system or have it installed in an unusual place.
This patch adds cursor-spec cursor icon name aliases.
[1] https://www.freedesktop.org/wiki/Specifications/cursor-spec/
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We made a similar change to wlr_xdg_toplevel.
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This is more descriptive, and avoids the confusion with
wlr_xdg_surface.added.
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We're at the end of the function anyways.
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When a client attaches a NULL buffer to its wl_surface, it's
unmapped. This resets the xdg_surface in its initial state. An
extra NULL commit makes the compositor send an initial configure
event.
Note, wlr_xdg_toplevel.added is separate from wlr_xdg_surface.added.
Closes: https://github.com/swaywm/sway/issues/7397
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Since 1d581656c756 ("backend/drm: set "max bpc" to the max") we
set the "max bpc" property to the maximum value. The kernel driver
is supposed to clamp this value depending on hardware capabilities.
All kernel drivers lower the value depending on the GPU capabilities.
However, none of the drivers lower the value depending on the DP-MST
link capabilities. Thus, enabling a 4k@60Hz mode can fail on some
DP-MST setups due to the "max bpc" property.
Additionally, it's not a good idea to unconditionally set "max bpc"
to the max. A high bpc consumes more lanes and more clock speed,
which means higher power consumption and the busy lanes cannot be
used for something else (e.g. other data transfers on a USB-C cable).
For now, let's tie the "max bpc" to the pixel format of the buffer.
Introduce a heuristic to make "high bit-depth buffer" a synonym of
"I want the best quality".
This is not perfect: a "max bpc" higher than 8 might be desirable
for pixel formats with a color depth of 8 bits, for instance when
the color management KMS properties are used. But we don't really
support that yet, so let's leave this for later.
Closes: https://github.com/swaywm/sway/issues/7367
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We can just create a wl_array from the array passed by the user.
Here, wl_array is only necessary to make libwayland happy.
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Without outputs, all points are equally invalid anyway, but for e.g.
cursor warping it makes more sense to preserve the original position.
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Fail with a clearer error when the requested size is too large.
Without this, we allocate a buffer with a size smaller than what
was requested.
References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3975
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When the user switches away from the VT where wlroots is running,
the new DRM master may mutate the KMS state in an arbitrary manner.
For instance, let's say wlroots uses the following connector/CRTC
mapping:
- CRTC 42 drives connector DP-1
- CRTC 43 drives connector DP-2
Then the new DRM master may swap the mapping like so:
- CRTC 42 drives connector DP-2
- CRTC 43 drives connector DP-1
wlroots needs to restore its own state when the user switches back.
Some state is attached to wlr_drm_crtc (e.g. current FB), so reading
back and adopting the CRTC/connector mapping left by the previous DRM
master would be complicated (this was the source of other bugs in the
past, see [1]).
With the previous logic, wlroots merely tries to restore the state
of each connector one after the other. This fails in the scenario
described above: the kernel refuses to use CRTC 42 for DP-1, because
that CRTC is already in-use for DP-2.
Unfortunately with the legacy uAPI it's not possible to restore the
state in one go. We need to support both legacy and atomic uAPIs, so
let's fix the bug for the legacy uAPI first, and then improve the
situation for the atomic uAPI as a second step [2].
We need to disable the CRTCs we're going to switch the connectors for.
This sounds complicated, so let's just disable all CRTCs to simplify.
This causes a black screen because of the on/off modesets, but makes
VT switch much more reliable, so I'll take it.
[1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/commit/c6d8a11d2c438d514473b1cbe20e5550e7227472
[2]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3794
Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3342
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Fixes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3563
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check_parent was unecessary: it only served to skip a trivial check
and added more complexity than it was worth.
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Instead use the scene node position.
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This was changed to a bitfield by mistake.
References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/3484#note_1697926
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We lock the buffer there, so we need to initialize the n_busy
count to 1 as well.
Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3556
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The invalid_destroy and invalid_unlock protocol errors aren't currently
sent by wlroots and instead left up to the compositor. However, we can
handle these as well without much additional complexity.
This also adds a missing wl_resource_destroy() call if the lock is inert
in lock_handle_unlock_and_destroy().
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Fixes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3554
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xwayland_surface_associate() already does this.
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Make sure xwayland_surface_associate() is not called twice in a
row without a xwayland_surface_dissociate() call in-between.
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If a window is unmapped too quickly, we might receive UnmapNotify before
we get the corresponding wl_surface, which will later lead to
associating the same window twice. To fix this, move the NULL surface
check to xwayland_surface_dissociate(), which makes resetting the
unpaired link and the wl_surface object ID unconditional.
Fixes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3552
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We already do it for get_drm_plane_props().
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