Commit Graph

1509 Commits

Author SHA1 Message Date
Adam Jackson
545fcb3dbf renderer-native: Fix memory leak in secondary GPU update
Leaking a texture object and a framebuffer object every time you update
the secondary GPU is perhaps not the best plan.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1011
2020-01-21 14:39:01 +00:00
Pekka Paalanen
b6c824dd16 renderer/native: Import primary buffer to 2nd GPU
Where possible, try to export the buffer rendered by the primary GPU as a
dmabuf and import it to the secondary GPU and turn it into a DRM FB for
scanout. If this works, we get a zero-copy path to secondary GPU outputs.

This is especially useful on virtual drivers like EVDI (used for DisplayLink
devices) which are not picky at all about what kind of FBs they can handle.

The zero-copy path is prioritised after the secondary GPU copy path, which
should avoid regressions for existing working systems. Attempting zero-copy
would have the risk of being less performant than doing the copy on the
secondary GPU. This does not affect the DisplayLink use case, because there is
no GPU in a DisplayLink device.

The zero-copy path is prioritised before the primary GPU and CPU copy paths. It
will be tried on the first frame of an output and the copy path is executed
too. If zero-copy fails, the result from the copy path will take over on that
frame. Furthermore, zero-copy will not be attemped again on that output. If
zero-copy succeeds, the copy path is de-initialized.

Zero-copy is assumed to be always preferable over the primary GPU and CPU copy
paths. Whether this is universally true remains to be seen.

This patch has one unhandled failure mode: if zero-copy path first succeeds and
then fails later, there is no fallback and the output is left frozen or black.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
03ac7b1821 backend/native: Share drmModeAddFB code
With all the three paths this is quite a handful of code, and it was mostly
duplicated in two places. A follow-up patch would need to introduce a third
copy of it. Therefore move the code into a helper function.

There are two behavioral changes:

- The format error now prints the string code as well, because it is easy to
  read.

- The g_debug() in init_dumb_fb() is removed. Did not seem useful.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
f409dddb54 renderer/native: Extract secondary_gpu_release_dumb
There will be another place where I need to release the dumb buffers but not
destroy the whole secondary_gpu_state, so extract this bit of code into a
helper.

The checks of fb_id are dropped as redundant with the check already in in
release_dumb_fb ().

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
fe76e6a228 renderer/native: Reset all fields of MetaDumbBuffer
release_dumb_fb () checks 'map' to see if anything needs freeing. Other places
are checking fb_id instead. The checks maybe redundant, but let's reset all
fields here while at it, so that all the checks work as expected.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
40408150f0 renderer/native: Absorb free_next_secondary_bo
The function is trivial and only used once, so fold it into the caller.

Makes the code more readable by removing a little bit of boilerplate.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
fea6abb4f0 renderer/native: Copy mode irrelevant for bo freeing
Simplify the bo freeing functions by not checking what the copy mode is. This
matches what swap_secondary_drm_fb () already does. g_clear_object () is safe
to call even if the value is already NULL.

The copy mode does not change mid-operation. If it did, this change would
ensure we still clean up everything. So this is more future-proof too.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
94992ffff6 renderer/native: META_DRM_BUFFER is not NULL-safe
I could not find this in GObject documentation, but I hear the cast macro is
not safe to call with NULL.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Pekka Paalanen
d7c9042c78 renderer/native: state consistency in copy_shared_framebuffer_gpu
To mirror what happens in meta_onscreen_native_swap_buffers_with_damage(), warn
here too if next_fb is not NULL. This makes it clear to the reader of what the
expectations are inside this function.

Ensuring next_fb is NULL as the first thing in the function will make all error
paths equal: no longer some failures reset next_fb while others don't. Removing
such special cases should reduce surprises.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/810
2020-01-16 20:19:29 +00:00
Jonas Ådahl
ce3409b2b7 kms-impl-simple: Handle mode set race conditions gracefully
If we end up trying to do a mode set on a DRM state that has already
changed behind our back without us yet having seen the hotplug event we
may fail with `EINVAL`. Since the renderer layer doesn't handle mode set
failure, it'll still try to page flip later on, which will then also
fail. When failing, it'll try to look up the cached mode set in order to
retry the mode set later on, as is needed to handle other error
conditions. However, if the mode set prior to the page flip failed, we
won't cache the mode set, and the page flip error handling code will get
confused.

Instead of asserting that a page flip always has a valid cached mode set
ready to look up, handle it being missing more gracefully by failing to
mode set. It is expected that things will correct themself as there
should be a hotplug event waiting around the the corner, to reconfigure
the monitor configuration setting new modes.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/917

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1007
2020-01-16 14:50:34 +00:00
Jonas Ådahl
7733f88168 kms-impl-simple: Include mode name in error message
https://gitlab.gnome.org/GNOME/mutter/merge_requests/1007
2020-01-16 14:50:34 +00:00
Jonas Ådahl
6e5ac0b585 Use G_GNUC_FALLTHROUGH instead of comments
Get the same task done in a bit more C:y way.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/998
2020-01-09 17:58:29 +01:00
Jonas Dreßler
c4fa30ac7d backends/native: Fix relative motion calculation if monitor isn't found
The method `relative_motion_across_outputs` is used to adjust the
distance/delta of a mouse movement across multiple monitors to take the
different scale factors of those monitors into account. This works by
getting the adjacent monitors that the movement-line/vector intersects
with and adjusting the final position (or end point of the
movement-line) by multiplying the parts of the line spanning across
different monitors with the scale factors of those monitors.

In the end of this calculation, we always want to set the new end
coordinates of the relative motion to the new end coordinates of the
adjusted movement-line. We currently only do that if all adjacent
monitors the line is crossing actually exist, because only then we end
up inside the "We reached the dest logical monitor" else-block and set
`x` and `y` to the correct values. Fix that and make sure the returned
values are also correct in case an adjacent monitor doesn't exist by
adding separate `target_x` and `target_y` variables which we update during
each pass of the while loop so we're always prepared for the while loop
exiting before the destination monitor was found.

Thanks to Axel Kittenberger for reporting the initial bug and tracking
the issue down to `relative_motion_across_outputs`.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/774
2020-01-07 20:18:46 +00:00
Carlos Garnacho
1e7285b2bb backends: Always enable tap-to-click/drag on opaque Wacom tablets
Touch-wise, those are essentially giant touchpads, but have no buttons
associated to the "touchpad" device (There may be pad buttons, but
those are not mouse buttons).

Without tap-to-click/drag, touch in those devices is somewhat useless
out of the box. Have them always enable these features, despite the
setting.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/968
2020-01-06 13:52:55 +00:00
Pascal Nowack
e89cea8e5a screen-cast: Fix window recording on HiDPI
Using the same scale for the window as the
logical monitor only works correctly when having
the experimental 'scale-monitor-framebuffer'
feature enabled.
Without this experimental feature, the stream
will contain a black screen, where the actual
window only takes a small part of it.

Therefore, use a scale of 1 for the non-
experimental case.

Patch is based on commit 3fa6a92cc5.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/976
2019-12-18 18:41:44 +01:00
Yariv Barkan
67d9995280 backends/native: Get the correct value for pinch dy
Fix a typo - use the correct libinput api.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/974
2019-12-13 21:57:33 +02:00
Tim Crawford
d70ddc65ea backends/native: Fix double free of error
error is an autoptr, so must not be explicitly freed.

Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/1852
Fixes: 5c500ad402 ("backend: Move GPU ownership from the monitor manager to the backend")

https://gitlab.gnome.org/GNOME/mutter/merge_requests/960
2019-12-06 11:33:26 -07:00
Pekka Paalanen
832a522cce kms-impl/simple: Fix meta_set_fallback_feedback_idle
Presumably this function is supposed to be like
meta_kms_impl_simple_handle_page_flip_callback() but the condition in the
if-statement is inverted. Fix the inversion to make these two functions look
alike.

This is part 2 of 2 fixing a complete desktop freeze when drmModePageFlip()
fails with EINVAL and the fallback to drmModeSetCrtc() succeeds but the success
is not registered correctly as completed "flip". The freeze occurs under
wait_for_pending_flips() which calls down into meta_kms_impl_device_dispatch()
which ends up poll()'ing the DRM fd even though drmModeSetCrtc() will not
produce a DRM event, hence the poll() never returns. The freeze was observed
when hotplugging a DisplayLink dock for the first time on Ubuntu 19.10.

This patch makes meta_set_fallback_feedback_idle() actually end up calling into
notify_view_crtc_presented() which decrements
secondary_gpu_state->pending_flips so that wait_for_pending_flips() can finish.

CC stable: gnome-3-34

https://gitlab.gnome.org/GNOME/mutter/merge_requests/953
2019-12-06 15:55:35 +00:00
Pekka Paalanen
79491df2b8 kms: Process impl idle callbacks before pre dispatch flush
mode_set_fallback() schedules a call to mode_set_fallback_feedback_idle(), but
it is possible for Mutter to repaint before the idle callbacks are dispatched.
If that happens, mode_set_fallback_feedback_idle() does not get called before
Mutter enters wait_for_pending_flips(), leading to a deadlock.

Add the needed interfaces so that meta_kms_device_dispatch_sync() can flush all
the implementation idle callbacks before it checks if any "events" are
available. This prevents the deadlock by ensuring
mode_set_fallback_feedback_idle() does get called before potentially waiting
for actual DRM events.

Presumably this call would not be needed if the implementation was running in
its own thread, since it would eventually dispatch its idle callbacks before
going to sleep polling on the DRM fd. This call might even be unnecessary
overhead in that case, synchronizing with the implementation thread needlessly.
But the thread does not exist yet, so this is needed for now.

This is part 1 of 2 fixing a complete desktop freeze when drmModePageFlip()
fails with EINVAL and the fallback to drmModeSetCrtc() succeeds but the success
is not registered correctly as completed "flip". The freeze occurs under
wait_for_pending_flips() which calls down into meta_kms_impl_device_dispatch()
which ends up poll()'ing the DRM fd even though drmModeSetCrtc() will not
produce a DRM event, hence the poll() never returns. The freeze was observed
when hotplugging a DisplayLink dock for the first time on Ubuntu 19.10.

CC stable: gnome-3-34

https://gitlab.gnome.org/GNOME/mutter/merge_requests/953
2019-12-06 15:55:35 +00:00
Jonas Ådahl
4ede6ea8c5 cogl: Remove the framebuffer and source stacks
They have been deprecated for a long time, and all their uses in clutter
and mutter has been removed. This also removes some no longer needed
legacy state tracking, as they were only ever excercised in certain
circumstances when there was sources (pipelines or materials) on the now
removed source stack.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/935
2019-12-03 19:02:14 +00:00
Jonas Ådahl
3f65837e0d clutter, core: Stop using the Cogl framebuffer stack
The Cogl framebuffer stack is going away; replace all its uses by the
framebuffer stack carried by the paint context.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/935
2019-12-03 19:02:14 +00:00
Jonas Ådahl
49c8d42317 clutter: Introduce paint contexts
When painting, actors rely on semi global state tracked by the state to
get various things needed for painting, such as the current draw
framebuffer. Having state hidden in such ways can be very deceiving as
it's hard to follow changes spread out, and adding more and more state
that should be tracked during a paint gets annoying as they will not
change in isolation but one by one in their own places. To do this
better, introduce a paint context that is passed along in paint calls
that contains the necessary state needed during painting.

The paint context implements a framebuffer stack just as Cogl works,
which is currently needed for offscreen rendering used by clutter.

The same context is passed around for paint nodes, contents and effects
as well.

In this commit, the context is only introduced, but not used. It aims to
replace the Cogl framebuffer stack, and will allow actors to know what
view it is currently painted on.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/935
2019-12-03 19:02:14 +00:00
Carlos Garnacho
6f4c7d66a4 x11: Check wacom button flags to determine whether button is mode switch
Checking the leds is not really accurate, since some devices have mode
switch buttons without leds. Check in the button flags whether they are
mode switch buttons for any of ring/ring2/strip/strip2, and return the
appropriate group.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/952
2019-11-29 18:10:14 +00:00
Marco Trevisan (Treviño)
427670cc63 device-manager-x11: Ignore events if no source device is set
There might be some inconsistent event for which we don't have a known
source device.

In the current state we don't handle them and we could crash when getting
the current device tool.

So, add an utility function that retrieves the source device for an event
that warns if no device is found, and use this for Motion, Key and Button
events.

In case we don't have a valid source in such case, just return early instead
of trying to generate invalid clutter events.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/823
2019-11-23 01:38:16 +00:00
Robert Mader
8e172aeecb cleanup: Use g_clear_handle_id() for g_source_remove()
It makes sure we do not forget to zero the id and lets us avoid
zero checks before. We use it for all new code, lets clean up the
existing code base.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/947
2019-11-22 01:27:40 +01:00
Robert Mader
92375c75f8 cleanup: Use g_clear_signal_handler() where possible
This is inspired by 98892391d7 where the usage of
`g_signal_handler_disconnect()` without resetting the corresponding
handler id later resulted in a bug. Using `g_clear_signal_handler()`
makes sure we avoid similar bugs and is almost always the better
alternative. We use it for new code, let's clean up the old code to
also use it.

A further benefit is that it can get called even if the passed id is
0, allowing us to remove a lot of now unnessecary checks, and the fact
that `g_clear_signal_handler()` checks for the right type size, forcing us
to clean up all places where we used `guint` instead of `gulong`.

No functional changes intended here and all changes should be trivial,
thus bundled in one big commit.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/940
2019-11-21 15:02:27 +00:00
Hans de Goede
8907a29912 cursor-renderer/native: Fix cursor drawing in combination with panel_orientation_transform
Properly take the panel_orientation_transform into account in
update_monitor_crtc_cursor. This fixes us sometimes drawing the cursor
on two monitors at the same time as we did not properly swap the crtc
width/height when a panel_orientation_transform is active.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/927
2019-11-13 10:54:37 +01:00
Hans de Goede
a5f986259f output-kms: Fix "panel orientation" kms-prop being ignored on native outputs
Actually store the panel_orientation_transform in the meta_output, so
that it gets honored by the core code.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/927
2019-11-13 10:53:50 +01:00
Hans de Goede
5afec87b96 input-settings/x11: Add missing clutter_x11_trap_x_errors around XIGetProperty
Add missing clutter_x11_[un]trap_x_errors around the XIGetProperty call
in meta-input-settings-x11.c's get_property helper function.

This fixes mutter crashing with the following error if the XInput device
goes away at an unconvenient time:

 X Error of failed request:  XI_BadDevice (invalid Device parameter)
   Major opcode of failed request:  131 (XInputExtension)
   Minor opcode of failed request:  59 ()
   Device id in failed request: 0x200011
   Serial number of failed request:  454
   Current serial number in output stream:  454

https://gitlab.gnome.org/GNOME/mutter/merge_requests/928
2019-11-10 19:45:08 +01:00
Olivier Fourdan
60800d2313 renderer-native: Separate offscreen and shadowfb
Create the intermediate shadow framebuffer for use exclusively when a
shadowfb is required.

Keep the previous offscreen framebuffer is as an intermediate
framebuffer for transformations only.

This way, we can apply transformations between in-memory framebuffers
prior to blit the result to screen, and achieve acceptable performance
even with software rendering on discrete GPU.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/877
2019-11-04 10:44:42 +01:00
Christian Hergert
6051712919 profiler: track changes in GLib and Sysprof
This tracks the changes to gdbus-codegen in terms of how GUnixFDList is
done to use the UnixFD annotation.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/908
2019-10-30 16:07:36 -07:00
Jonas Ådahl
942883577e x11: Limit touch replay pointer events to when replaying
When a touch sequence was rejected, the emulated pointer events would be
replayed with old timestamps. This caused issues with grabs as they
would be ignored due to being too old. This was mitigated by making sure
device event timestamps never travelled back in time by tampering with
any event that had a timestamp seemingly in the past.

This failed when the most recent timestamp that had been received were
much older than the timestamp of the new event. This could for example
happen when a session was left not interacted with for 40+ days or so;
when interacted with again, as any new timestamp would according to
XSERVER_TIME_IS_BEFORE() still be in the past compared to the "most
recent" one. The effect is that we'd always use the `latest_evtime` for
all new device events without ever updating it.

The end result of this was that passive grabs would become active when
interacted with, but would then newer be released, as the timestamps to
XIAllowEvents() would out of date, resulting in the desktop effectively
freezing, as the Shell would have an active pointer grab.

To avoid the situation where we get stuck with an old `latest_evtime`
timestamp, limit the tampering with device event timestamp to 1) only
pointer events, and 2) only during the replay sequence. The second part
is implemented by sending an asynchronous message via the X server after
rejecting a touch sequence, only potentially tampering with the device
event timestamps until the reply. This should avoid the stuck timestamp
as in those situations, we'll always have a relatively up to date
`latest_evtime` meaning XSERVER_TIME_IS_BEFORE() will not get confused.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/886
2019-10-28 18:40:44 +00:00
Jonas Ådahl
23fa59b77c display: Move finishing of touch sequence to the backend
We need to manipulate an X11 grab when a touch sequence ends; move that
logic to where it belongs - in the X11 backend.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/886
2019-10-28 18:40:43 +00:00
Carlos Garnacho
668be1f4bd backends: Plug MetaKmsPageFlipData leak
If the page flip is postponed, keep a ref to it, but still unref it
on the page flip callback anyways. Fix suggested by Jonas Ådahl.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/873
2019-10-21 19:01:35 +02:00
Jan Alexander Steffens (heftig)
a444a4c5f5 EGL: Include EGL/eglmesaext.h
The eglext.h shipped by libglvnd does not include the Mesa extensions,
unlike the header shipped in Mesa.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/876
2019-10-21 14:04:30 +00:00
Cosimo Cecchi
8665084df1 monitor-manager: check for underscan setting validity upfront
Instead of doing a roundtrip to the X server before setting it, rely on
the previous value fetched before the configuration was sent over DBus.
This matches the argument check we already do elsewhere, and will allow
us to more easily add an additional condition to determine if underscan
is supported.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/673
2019-10-16 14:34:14 +00:00
Georges Basile Stavracas Neto
94682e69aa Replace ClutterRect by graphene_rect_t
https://gitlab.gnome.org/GNOME/mutter/merge_requests/458
2019-10-16 11:38:14 +00:00
Georges Basile Stavracas Neto
160cc9182d Replace ClutterPoint by graphene_point_t
Remove the tests for ClutterPoint since it's
corresponding code moved to private ClutterStage
methods.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/458
2019-10-16 11:38:14 +00:00
Carlos Garnacho
97010ac64d meta: Move private defines to a private header
These defines are unused outside of mutter, and actually not
desirable to export. Move them to a private header.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/859
2019-10-15 11:03:56 +00:00
Robert Mader
a8155a0471 meta: Add META namespace to macros
To silence warnings during GIR generation.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/822
2019-10-14 10:14:11 +00:00
Niels De Graef
3a688988e0 dbus-session-watcher: Chain up to parent finalize()
https://gitlab.gnome.org/GNOME/mutter/merge_requests/847
2019-10-14 09:09:01 +02:00
Jonas Ådahl
1b4709794e kms/crtc: Read gamma state when prediction failed
If we did a mode set, the gamma may have been changed by the kernel, and
if we didn't also update the gamma in the same transaction, we have no
way to predict the current gamma ramp state. In this case, read the
gamma state directly from KMS.

This should be relatively harmless regarding the race conditions the
state prediction was meant to solve, as the worst case is we get none or
out of date gamma ramps; and since this is for when gamma ramps are not
updated at mode setting time, we'd get intermediate gamma state to begin
with, so it's not worse than what we currently do anyway.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/851

https://gitlab.gnome.org/GNOME/mutter/merge_requests/840
2019-10-10 14:46:32 +00:00
Jonas Ådahl
1cc249fe18 kms: Always predict state after processing update
Not only mode sets have state that should be predicted; changing gamma
currently happens with its own update, so we missed predicting that.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/840
2019-10-10 14:46:32 +00:00
Marco Trevisan (Treviño)
446bd04b6c clutter-backend-x11: Don't push keymap events to clutter
Xkb events should be handled by clutter backend but they are not translated
into an actual clutter event. However we're now handling them and also trying
to push an empty event to clutter queue, causing a critical error.

So in such case, just handle the native event but don't push the non-populated
clutter-event to the queue.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/750
https://gitlab.gnome.org/GNOME/mutter/merge_requests/764
2019-10-10 13:00:02 +00:00
Marco Trevisan (Treviño)
9234fcb624 event-x11: Use CLUTTER prefix for X11 filter docs
As per commit ad72fa46b clutter_x11_handle_event was renamed into
meta_x11_handle_event but the return type didn't change.

So, keep the doc-string to match the actual possible return values.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/764
2019-10-10 13:00:02 +00:00
Tim Klocke
81ee8886ce backends: Update inhibited state for the monitor and respect that state
The inhibited state of the monitor was after the initializiation never
updated. meta_idle_monitor_reset_idletime didn't respect the inhibited
state, so it set timeouts if it shouldn't have.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/573
2019-10-09 09:53:32 +00:00
Carlos Garnacho
fc3831c797 backends: Fix thinko
We are meant to pass a flagset there, not a boolean. Fixes state querying
to the ClutterKeymap in the native backend.

https://gitlab.gnome.org/GNOME/mutter/issues/769
2019-10-07 22:28:45 +00:00
Carlos Garnacho
ce86f90efb Revert "backends/x11: Do not reload keymap on new keyboard notifications"
This reverts commit b01edc22f3.

It breaks keybindings on certain physical keyboard layouts.

Closes: https://gitlab.gnome.org/GNOME/mutter/issues/822
2019-10-07 22:15:02 +00:00
Jonas Ådahl
104bdde746 kms: Predict state changes when processing update
We can't just update the state of the connector and CRTC from KMS since
it might contain too new updates, e.g. from a from a future hot plug. In
order to not add ad-hoc hot plug detection everywhere, predict the state
changes by looking inside the MetaKmsUpdate object, and let the hot-plug
state changes happen after the actual hot-plug event.

This fixes issues where connectors were discovered as disconnected while
doing a mode-set, meaning assumptions about the connectedness of
monitors elsewhere were broken until the hot plug event was processed.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/782

https://gitlab.gnome.org/GNOME/mutter/merge_requests/826
2019-10-07 14:59:18 +00:00
Jonas Ådahl
2a990cc140 kms/update: Add helper to turn fixed point rect into int rect
Currently unused, but will in the following commit.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/826
2019-10-07 14:59:18 +00:00
Jonas Ådahl
3e41568074 kms/update: Add helper to get primary plane assignment
Replaces a private static function, with no functional changes made to
it.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/826
2019-10-07 14:59:18 +00:00
Jonas Ådahl
7049b2f274 Revert "renderer-native: Actually use shadow fb when using software rendering"
It was not the lack of forcing the shadow fb that caused slowness, but
rather due to the method the shadow fb content was copied onto the
scanout fb. With 'clutter: Use cogl_blit_framebuffer() for shadow FB'
we'll use a path that shouldn't be slow when copying onto the scanout
fb.

Also 437f6b3d59 accidentally enabled
shadow fb when using hw accelerated contexts, due to the cap being set
to 1 in majority of drivers. While the kernel documentation for the
related field says "hint to userspace to prefer shadow-fb rendering",
the name of the hint when exposed to userspace is
DRM_CAP_DUMB_PREFER_SHADOW, thus should only be taken into consideration
for dumb buffers, not rendering in general.

This reverts commit 437f6b3d59.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/818
2019-09-30 11:30:47 +02:00
Jonas Ådahl
437f6b3d59 renderer-native: Actually use shadow fb when using software rendering
The commit 'renderer/native: Use shadow fb on software GL if preferred'
attempted to force using a shadow fb when using llvmpipe in order to
speed up blending, but instead only did so when llvmpipe AND the drm
device explicityl asked for it.

Now instead always force it for llvmpipe and other software rendering
backends, and otherwise just query the drm device (i.e.
DRM_CAP_DUMB_PREFER_SHADOW).

https://gitlab.gnome.org/GNOME/mutter/merge_requests/807
2019-09-27 21:18:59 +00:00
Daniel van Vugt
7a0340c57d kms-impl-device: Use portable formatting for 64-bit integers
On 64-bit systems uint64_t is %lu but on 32-bit systems it is %llu.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/778
2019-09-20 11:55:49 +02:00
Daniel van Vugt
0863bd2408 output-kms: Use portable formatting for 64-bit integers
On 64-bit systems uint64_t is %lu but on 32-bit systems it is %llu.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/778
2019-09-20 11:55:42 +02:00
Daniel van Vugt
594cc7c7d6 input-settings: Use portable formatting for 64-bit integers
On 64-bit systems int64_t is %lx but on 32-bit systems it is %llx.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/778
2019-09-20 11:55:35 +02:00
Jonas Ådahl
0e69fe0781 idle-monitor: Reset timeout before firing watch
The watch might be removed during firing, meaning the source is
destroyed after returning. Avoid use-after-free by unsetting the timeout
before firing. Returning G_SOURCE_CONTINUE in that case is harmless, as
source is destroyed.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/796

https://gitlab.gnome.org/GNOME/mutter/merge_requests/799
2019-09-16 18:08:18 +00:00
Jonas Ådahl
26b08d87a8 idle-monitor: Remove redundant type cast
No need to type cast a `MetaIdleMonitorWatch *` to a
`MetaIdleMonitorWatch *`.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/799
2019-09-16 18:08:18 +00:00
Jonas Ådahl
321ab3b367 idle-monitor: Make helper function static
It wasn't used outside the file, so no reason to not have it static.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/799
2019-09-16 18:08:18 +00:00
Michal Lazo
4d0869e206 kms-device: Free path when finalizing
free path in finalize

https://gitlab.gnome.org/GNOME/mutter/merge_requests/775
2019-09-16 16:41:46 +00:00
Michal Lazo
d13cea6ccb kms-device: Handle impl device creation failure
Properly free kms-device in case of invalid initialization

https://gitlab.gnome.org/GNOME/mutter/merge_requests/772
2019-09-16 16:34:39 +00:00
Georges Basile Stavracas Neto
7a22f6fd3f Fix a few tracing typos
They are missing the closing parenthesis. Add them.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/795
2019-09-12 14:30:44 -03:00
Jonas Ådahl
5111e33948 monitor-manager/kms: Get hotplug events from MetaKms
This makes it clearer that MetaMonitorManagerKms keeps updated as
MetaKms updates its state.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/743
2019-09-05 08:03:36 +00:00
Jonas Ådahl
4cf828323d kms/impl-device: Add and remove connectors on hot plug
Connectors may disappear and appear on hot plugs, e.g. when a docking
station is connected, so when processing a hot plug event, make sure we
remove connectors that are now gone, and add new ones that have appeared
since last time.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/728

https://gitlab.gnome.org/GNOME/mutter/merge_requests/743
2019-09-05 08:03:36 +00:00
Jonas Ådahl
35776c5d29 kms: Add assert to check that the main thread is blocked on impl task
This is so that we can have code in impl tasks that pokes at the main
context objects.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/743
2019-09-05 08:03:36 +00:00
Olivier Fourdan
2f072af02b clutter/input-pointer-a11y: Restore pointer a11y on resume
When suspending, the devices are removed and the virtual device
associated with the corresponding core pointer is disposed.

Add the pointer accessibility virtual device to the core pointer
on resume to restore pointer accessibility on resume if enabled.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/761
2019-09-02 17:27:17 +00:00
Daniel van Vugt
6ed5d2e2b4 cogl: Remove GLX "threaded swap wait" used on Nvidia
Threaded swap wait was added for using together with the Nvidia GLX
driver due to the lack of anything equivalent to the INTEL_swap_event
GLX extension. The purpose was to avoid inhibiting the invocation of
idle callbacks when constantly rendering, as the combination of
throttling on swap-interval 1 and glxSwapBuffers() and the frame clock
source having higher priority than the default idle callback sources
meant they would never be invoked.

This was solved in gbz#779039 by introducing a thread that took care of
the vsync waiting, pushing frame completion events to the main thread
meaning the main thread could go idle while waiting to draw the next
frame instead of blocking on glxSwapBuffers().

As of https://gitlab.gnome.org/GNOME/mutter/merge_requests/363, the
main thread will instead use prediction to estimate when the next frame
should be drawn. A side effect of this is that even without
INTEL_swap_event, we would not block as much, or at all, on
glxSwapBuffers(), as at the time it is called, we have likely already
hit the vblank, or will hit it soon.

After having introduced the swap waiting thread, it was observed that
the Nvidia driver used a considerable amount of CPU waiting for the
vblank, effectively wasting CPU time. The need to call glFinish() was
also problematic as it would wait for the frame to finish, before
continuing. Due to this, remove the threaded swap wait, and rely only on
the frame clock not scheduling frames too early.

Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=781835
Related: https://gitlab.gnome.org/GNOME/mutter/issues/700

[jadahl: Rewrote commit message]

https://gitlab.gnome.org/GNOME/mutter/merge_requests/602
2019-09-02 18:12:10 +08:00
Jonas Ådahl
ab1107973b backends/native: Add various cogl traces
Trace the time spent finishing a frame, posting KMS updates and some
other things.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/757
2019-08-31 12:22:39 +00:00
Jonas Ådahl
65fde269c6 screen-cast/window: Use window actor damaged signal instead of paint
We are really more interested in when a window is damaged, rather than
when it's painted, for screen casting windows. This also has the benefit
of not listening on the "paint" signal of the actor, meaning it'll open
doors for hacks currently necessary for taking a screenshot of a window
consisting of multiple surfaces.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/752
2019-08-27 15:31:25 +00:00
Piotr Drąg
634c31d7cb backends: Don’t translate GLib properties
https://gitlab.gnome.org/GNOME/mutter/merge_requests/749
2019-08-24 17:10:32 +02:00
Carlos Garnacho
c0a71720af backends: Don't use glib types in new native backend objects
https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:08 +00:00
Carlos Garnacho
8b03d9ecc3 clutter: Move evdev input to src/backends/native
The end goal is to have all clutter backend code in src/backends. Input
is the larger chunk of it, which is now part of our specific
MutterClutterBackendNative, this extends to device manager, input devices,
tools and keymap.

This was supposed to be nice and incremental, but there's no sane way
to cut this through. As a result of the refactor, a number of private
Clutter functions are now exported for external backends to be possible.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:08 +00:00
Carlos Garnacho
c710a56903 backends: Move nested stage to src/backends/x11/nested
We now have a MetaStageX11, so it's extra confusing to have both in
the same directory.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:08 +00:00
Carlos Garnacho
96d5bde9b7 backends: Don't use glib types in new X11 backend objects
https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:08 +00:00
Carlos Garnacho
ad72fa46b0 clutter: Move X11 input to src/backends/x11
The end goal is to have all clutter backend code in src/backends. Input
is the larger chunk of it, which is now part of our specific
MutterClutterBackendX11, this extends to device manager, input devices,
tools and keymap.

This was supposed to be nice and incremental, but there's no sane way
to cut this through. As a result of the refactor, a number of private
Clutter functions are now exported for external backends to be possible.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:08 +00:00
Carlos Garnacho
ef93bb6471 clutter: Remove event retrieval toggle
This is x11-specific API that was added back when clutter was out
of tree. Just remove it and directly do what we want.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:08 +00:00
Carlos Garnacho
e56df455ae clutter: Drop ClutterEventTranslator interface
We don't need that much complexity when we have a fixed set of
translators, and only one of them wants a given event.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/672
2019-08-24 08:59:07 +00:00
Jonas Ådahl
984aad4b86 compositor: Move out X11 compositing code into sub type
Introduce MetaCompositorX11, dealing with being a X11 compositor, and
MetaCompositorServer, being a compositor while also being the display
server itself, e.g. a Wayland display server.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/727
2019-08-19 08:44:58 +00:00
Jonas Ådahl
12ea2fcb51 compositor: Make type derivable
This is so that we can split it up properly into X11 compositor and
display server compositor sub types.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/727
2019-08-19 08:44:58 +00:00
Albert Vaca Cintora
4d8190972d cursor-renderer/native: Fix compilation warning
Previous initialization triggered Wmissing-braces in Clang.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/731
2019-08-16 14:54:48 +02:00
Hans de Goede
f3660dc60e kms: Deal with GPUs being unplugged
Add meta-kms and meta-monitor-manager-kms listener for the udev
device-removed signal and on this signal update the device state /
re-enumerate the monitors, so that the monitors properly get updated
to disconnected state on GPU removal.

We really should also have meta-backend-native remove the GPU itself
from our list of GPU objects. But that is more involved, see:
https://gitlab.gnome.org/GNOME/mutter/issues/710

This commit at least gets us to a point where we properly update the
list of monitors when a GPU gets unplugged; and where we no longer
crash the first time the user changes the monitor configuration after
a GPU was unplugged.

Specifically before this commit we would hit the first g_error () in
meta_renderer_native_create_view () as soon as some monitor
(re)configuration is done after a GPU was unplugged.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
0eb355e29d kms: Fix drm_connector mem-leak in meta_kms_connector_update_state
https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
3ccb7cf4b2 kms: drmModeGetConnector may fail
drmModeGetConnector may fail and return NULL, this may happen when
a connector is removed underneath us (which can happen with e.g.
DP MST or GPU hot unplug).

Deal with this by skipping the connector when enumerating and by
assuming it is disconnected when checking its connection state.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
578ff22464 kms: drmModeGetCrtc may fail
drmModeGetCrtc may fail and return NULL. This will trigger when
meta_kms_crtc_update_state gets called from meta_kms_update_states_sync
after a GPU has been unplugged leading to a NULL pointer deref causing
a crash.

This commit fixes this by checking for NULL and clearing the current_state
when NULL is returned.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
73db35c53c kms: Fix meta_kms_crtc_read_state gamma table memory leak
Before this commit meta_kms_crtc_read_state was overwriting the
entire MetaKmsCrtcState struct stored in crtc->current_state including
the gamma (sub)struct.

This effectively zero-s the gamma struct each time before calling
read_gamma_state, setting the pointers where the previous gamma values
were stored to NULL without freeing the memory. Luckily this zero-ing
also sets gamma.size to 0, causing read_gamma_state to re-alloc the
arrays on each meta_kms_crtc_update_state call. But this does mean that
were leaking the old gamma arrays on each meta_kms_crtc_update_state call.

This commit fixes this by making meta_kms_crtc_read_state only overwrite
the other values in the MetaKmsCrtcState struct and leaving the gamma
sub-struct alone, this will make read_gamma_state correctly re-use the
gamma tables if the gamma table size is unchanged; or re-alloc them
(freeing the old ones) if the size has changed, fixing the memory leak.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
76445bcb97 kms: Remove unused fields from MetaKmsCrtcState struct
https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
6792903c4f udev: Add device-removed signal
Add a device-removed signal which gets emitted when a GPU is removed.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Hans de Goede
17c217848d udev: Fix wrong closure function usage for the "device-added" signal
The "device-added" signal should use g_cclosure_marshal_VOID__OBJECT not
g_cclosure_marshal_VOID__VOID.

Instead of fixing this manually, simply replace the closure function for
both signals with NULL, glib will then automatically set the correct
va_marshaller.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/713
2019-08-15 20:38:28 +00:00
Jonas Ådahl
0521706617 monitor: Always advertise modes similar to the preferred mode
Even if the preferred mode ends up being too small according to the area
size filter, it should still be advertised as it's still preferred.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/725

https://gitlab.gnome.org/GNOME/mutter/merge_requests/722
2019-08-13 14:38:16 +00:00
Jonas Ådahl
989a281b5f monitor: Check mode resolution area when determining advertisability
Explicitly checking the dimensions of a mode to determine whether it
should be advertised or not fails for portrait style modes. Avoid this
by checking the area instead.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/722
2019-08-13 14:38:16 +00:00
Jonas Ådahl
18838bcefc monitor: Fix style issue
https://gitlab.gnome.org/GNOME/mutter/merge_requests/722
2019-08-13 14:38:16 +00:00
Carlos Garnacho
7ef32f747b wayland: Add setting/api to check the policy to set up the X11 display
This replaces meta_should_autostart_x11_display(). The "on-demand" policy
is not honored yet.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/709
2019-08-06 00:41:36 +00:00
Niels De Graef
5b98cc7a3a cursor-tracker: Document cursor-moved signal
It's a bit easier to track what's going on in a signal if you document
it (otherwise you have to check where it was emitted in the code).

https://gitlab.gnome.org/GNOME/mutter/merge_requests/697
2019-07-31 09:34:17 +00:00
Niels De Graef
4de892b02a cursor-tracker: Don't use g_cclosure_marshal_VOID__VOID
Similar to gtk commit f507a790, this ensures that the valist variant of
the marshaller is used. From that commit's message:

```
If we set c_marshaller manually, then g_signal_newv() will not setup a
va_marshaller for us. However, if we provide c_marshaller as NULL, it will
setup both the c_marshaller (to g_cclosure_marshal_VOID__VOID) and
va_marshaller (to g_cclosure_marshal_VOID__VOIDv) for us.
```

https://gitlab.gnome.org/GNOME/mutter/merge_requests/697
2019-07-31 09:34:17 +00:00
Niels De Graef
efe6c13d93 cursor-tracker: Use our own marshal for cursor-moved
By putting `NULL` as the C marshaller in `g_signal_new`, you
automatically get `g_cclosure_marshaller_generic`, which will try to
process its arguments and return value with the help of libffi and
GValue.

Using `glib-genmarshal` and valist_marshallers, we can prevent this so
that we need less instructions for each signal emission.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/697
2019-07-31 09:34:17 +00:00
Jonas Ådahl
61e51cdef6 dma-buf: Mark DMA-BUF textures as paint-only
Reading pixels directly from a texture imported from a DMA-BUF EGLImage
may result compressed textures to be transferred into non-compressed
texture. This may have side effects causing it to be rendered
incorrectly in subsequent paints.

Avoid this by passing the no-get-data flag to the texture creator
function, eventually causing mutter to use an intermediate offscreen
framebuffer when reading pixels from such textures.

https://bugs.freedesktop.org/show_bug.cgi?id=111140
https://gitlab.freedesktop.org/xorg/xserver/issues/545

https://gitlab.gnome.org/GNOME/mutter/merge_requests/687
2019-07-18 14:09:22 +00:00
Jonas Ådahl
7868ab761f cogl/texture: Add EGLImage texture import flags
The flags are 'none', and 'no-get-data' meaning get_data() is not
supported.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/687
2019-07-18 14:09:22 +00:00
Florian Müllner
4259cfd4c6 cleanup: Don't use G_TYPE_INSTANCE_GET_PRIVATE()
It has been deprecated in favor of the get_instance_private() function
generated by the G_ADD_PRIVATE() macro.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/689
2019-07-18 11:01:09 +02:00
Jonas Dreßler
a2a8f0cdaa wayland/pointer: Set focus to NULL when the cursor is hidden
This is important when using a touchscreen or stylus instead of a mouse
or touchpad. If the cursor only gets hidden and the focus stays the
same, the window will still send hover events to the UI element under
the cursor causing unexpected distractions while interacting with the
touchscreen.

Fix this by emitting a visibility-changed signal from the cursor tracker
which then triggers a focus surface sync and always set the focus
surface to NULL when it's synced while the cursor is hidden.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/448
2019-07-10 12:39:06 +00:00
Jonas Dreßler
faa7b2d4e5 cursor-tracker: Add API to get whether the pointer is visible
Allow checking whether the pointer is visible without accessing the
trackers internal is_showing property. While we don't need this just yet
for reading the visibility inside meta-wayland-pointer, it's useful when
implementing the logic to remove Clutter's focus when the cursor goes
hidden later.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/448
2019-07-10 12:39:06 +00:00
Pekka Paalanen
a95644dbdc renderer/native: Debug for primary copy mode
COPY_MODE_PRIMARY has two paths, automatically chosen. For debugging purposes,
e.g. why is my DisplayLink screen slowing down the whole desktop, it will be
useful to know which copy path is taken. Debug prints are added to both when
the primary GPU copy succeeds the first time and when it fails the first time.

This is not the full truth, because theoretically the success/failure could
change every frame, but we don't want to spam the logs (even in debug mode)
every frame. In practise, it should be rare for the success or failure to ever
change. Hence, saying what happened on the first time is enough. This does
indicate if it ever changes even once, too, so we know if that unexpected thing
happens.

The debug prints are per secondary GPU since there could be several.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/615
2019-07-10 08:15:02 +00:00
Pekka Paalanen
720f363241 renderer/native: Add tracing for 2nd GPU copies
These traces allow seeing how long the copy operations stall in libmutter, and
which copy operations actually get used.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/615
2019-07-10 08:15:02 +00:00
Pekka Paalanen
3794df608c renderer/native: Use primary GPU to copy
When the preferred path META_SHARED_FRAMEBUFFER_COPY_MODE_SECONDARY_GPU cannot
be used, as is the case for e.g. DisplayLink devices which do not actually have
a GPU, try to use the primary GPU for the copying before falling back to
read-pixels which is a CPU copy.

When the primary GPU copy works, it should be a significant performance win
over the CPU copy by avoiding stalling libmutter for the duration.

This also renames META_SHARED_FRAMEBUFFER_COPY_MODE_* because the new names are
more accurate. While the secondary GPU copy is always a GPU copy, the primary
copy might be either a CPU or a GPU copy.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/615
2019-07-10 08:15:02 +00:00
Pekka Paalanen
2c893beff1 renderer/native: Add meta_dumb_buffer_ensure_dmabuf_fd
Follow-up work will use this in an attempt to use the primary GPU to
copy into secondary GPU dumb buffers.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/615
2019-07-10 08:15:02 +00:00
Pekka Paalanen
9cd3b07472 egl: Introduce meta_egl_create_dmabuf_image
This bit of code was more or less duplicated in meta-renderer-native-gles3.c
and meta-wayland-dma-buf.c. Start consolidating the two implementations by
moving the *-gles3.c function into meta-egl.c and generalizing it so it could
also accommodate the meta-wayland-dma-buf.c usage.

The workaround in the *-gles3.c implementation is moved to the caller. It is
the caller's responsibility to check for the existence of the appropriate EGL
extensions.

Commit 6f59e4858e worked around the lack of
EGL_EXT_image_dma_buf_import_modifiers with the assumption that if the modifier
is linear, there is no need to pass it into EGL. The problem is that not
passing a modifier explicitly to EGL invokes implementation-defined behaviour,
so we should not have that workaround in meta-egl.c.

This patch intends to be pure refactoring, no behavioral changes. The one
change is the addition of g_assert to catch overwriting arbitrary memory.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/615
2019-07-10 08:15:02 +00:00
Georges Basile Stavracas Neto
4a184d74d5
monitor-manager: Don't notify unchanged power save mode
Since 4cae9b5b11, and indirectly before that as well, the
MetaMonitorManager::power-save-mode-changed is emitted even
when the power save mode didn't actually change.

On Wayland, this causes a mode set and therefore a stuttering.
It became more proeminent with the transactional KMS code.

Only emit 'power-save-mode-changed' when the power save mode
actually changed.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/674
2019-07-06 20:23:57 -03:00
Carlos Garnacho
1f133b3ed2 compositor: Add MetaDnD private function to initialize XDND
We need to set XdndAware and XdndProxy on the stage window if running
a X11 compositor, this is not necessary on wayland.

Takes over gnome-shell code doing this initialization.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/667
2019-07-04 12:24:57 +00:00
Jonas Ådahl
5cb6286436 kms-impl-device: Fail up front if we can't retrieve DRM resources
If we can't retrieve the drm resources, instead of segfaulting later on,
treat it as an error, and let the error handler up the stack handle it.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/665
2019-07-01 11:56:08 +02:00
Jonas Ådahl
1c25b75571 kms-impl-device: Fail if we can't enable universal planes
We currently don't handle the lack of DRM_CLIENT_CAP_UNIVERSAL_PLANES
KMS capability. Fail constructing a device that can't handle this up
front, so later made assumptions, such as presence of a primary plane,
are actually valid.

If we want to support lack of said capability, the required planes need
to be emulated by a dummy MetaKmsPlane object.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/665
2019-07-01 11:55:47 +02:00
Georges Basile Stavracas Neto
1206879a20 kms-plane: Include <drm_fourcc.h>
Instead of including <drm/drm_fourcc.h>. This is the
only file that includes the drm_fourcc.h header like
this, and it happened to break the build locally.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/663
2019-06-28 13:25:15 -03:00
Jonas Ådahl
dc5925b7d1 kms-plane: Restore adding format fallbacks
There were fallbacks in place in case IN_FORMATS didn't yield any usable
formats: the formats in the drmModePlane struct, and a hard coded array.
The lack of these fallbacks in place could result in a segfault as code
using the supported plane formats assumed there were at least something
in there.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/662
2019-06-28 14:21:11 +00:00
Olivier Fourdan
bca08c2c4e monitor-manager: Use meta_monitor_get_display_name() API
Use the new monitor's `meta_monitor_get_display_name()` instead of
rebuilding the display name for each DBUS request.

https://gitlab.gnome.org/GNOME/mutter/issues/645
2019-06-28 11:19:22 +02:00
Olivier Fourdan
6541d49fe7 monitor: Add display name
The display name is being used by the monitor manager to expose to name
to the DBUS API.

It is being rebuilt each time, so instead build the displa yname once
for the monitor and keep it around, with an API to retrieve it, so that
we can reuse it in preparation of xdg-output v2 support.

https://gitlab.gnome.org/GNOME/mutter/issues/645
2019-06-28 11:19:22 +02:00
Olivier Fourdan
c3c6668343 monitor-manager: Add get_vendor_name API
The monitor manager keeps the list of PnP Ids, add a new API to get the
vendor name from a given PnP ID.

https://gitlab.gnome.org/GNOME/mutter/issues/645
2019-06-28 11:19:22 +02:00
Jonas Ådahl
70de90ebce renderer/native: Discard page flip retries when rebuilding views
Rebuilding views means we don't care to retry page flip attempts for
previous views, especially since connectors may have been disconnected,
making a page flip retry hit an assert a flipped CRTC has connectors
associated with it.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/619

https://gitlab.gnome.org/GNOME/mutter/merge_requests/630
2019-06-27 19:08:01 +02:00
Jonas Ådahl
0756fd4636 renderer/native: Queue mode reset from new rebuild_views vfunc
Simplify the call site a bit and make the native renderer know it should
queue mode reset itself when views have been rebuilt. This is done
partly due to more things needing to be dealt with after views have been
rebuilt.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/630
2019-06-27 19:08:01 +02:00
Jonas Ådahl
8c339dac3e renderer/native: Remove left-over function declarations
There are no callers and no definitions of these.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/630
2019-06-27 19:07:57 +02:00
Florian Müllner
ca88826ce9 remote-desktop-session: Remove unnecessary include
The class doesn't actually use the native backend, so remove it
to avoid build errors when the backend is disabled.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/637
2019-06-27 15:50:11 +00:00
Olivier Fourdan
85f4772a4f backend/native: Fix compiler warning w/out EGL device
When building without EGL device support, the following compiler warning
is seen:

```
  src/backends/native/meta-renderer-native.c:2637:20: warning: unused
  variable ‘cogl_renderer_egl’ [-Wunused-variable]
```

Fix the warning by placing the relevant variable declarations within the
`#ifdef HAVE_EGL_DEVICE/#endif` statement.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/656
2019-06-27 10:21:26 +02:00
Carlos Garnacho
2b519cba36 backends: Move numlock persistence handling here
We used to have wayland-specific paths for this in src/wayland, now we
have ClutterKeymap that we can rely on in order to do state tracking,
and can do this all on src/backend domain.

This accomodates the feature in common code, so will work on both
Wayland and X11.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/590
2019-06-24 18:24:57 +02:00
Carlos Garnacho
832fc798d5 backends: Add missing code to restore NumLock state on X11
It's not be called to any practical effect yet in this backend, but will
do soon.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/590
2019-06-24 17:12:14 +02:00
Jonas Ådahl
20731887f2 monitor-manager/dummy: Fix name of mode debug env var
It provides ways to configure the modes, not the actual monitors.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/529
2019-06-24 13:49:52 +00:00
Jonas Ådahl
980d9b1042 monitor-manager/dummy: Make modes env var override the defaults
So that one can effectively change the default resolution.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/529
2019-06-24 13:49:52 +00:00
Jonas Ådahl
68f18f1fe9 monitor-manager/kms: Use KMS abstraction to get and set CRTC gamma
Still doesn't synchronize with frame drawing, but no point in doing that
until gamma is managed by mutter itself and not gnome-settings-daemon.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/634
2019-06-24 13:36:10 +00:00
Jonas Ådahl
c655166398 kms-impl/simple: Removing extra semi colon
https://gitlab.gnome.org/GNOME/mutter/merge_requests/634
2019-06-24 13:36:10 +00:00
Niels De Graef
70bacb9402 cogl: Remove CoglError wrapper
CoglError was added at a certain point to remove the hard dependency on
GLib, but since this can't be avoided inside mutter, let's remove this
whole abstraction.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/631
2019-06-20 18:25:04 +02:00
Jonas Ådahl
57dfe4696d kms-update: Seal updates when posting them
This makes sure that we won't accidentally change KMS transaction
updates after they have been posted.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
22a91f23ad backends/native: Add some KMS debug logging
Using the g_debug() macro. Set G_DEBUG_MESSAGES to "mutter" to activate
log.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
6aa1026600 kms: Add high level code documentation
Document the high level components of the KMS abstraction.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
75dff3e7c9 backend/native: Add and use transactional KMS API
This commit introduces, and makes use of, a transactional API used for
setting up KMS state, later to be applied, potentially atomically. From
an API point of view, so is always the case, but in the current
implementation, it still uses legacy drmMode* API to apply the state
non-atomically.

The API consists of various buliding blocks:

 * MetaKmsUpdate - a set of configuration changes, the higher level
handle for handing over configuration to the impl backend. It's used to
set mode, assign framebuffers to planes, queue page flips and set
connector properties.
 * MetaKmsPlaneAssignment - the assignment of a framebuffer to a plane.
Currently used to map a framebuffer to the primary plane of a CRTC. In
the legacy KMS implementation, the plane assignment is used to derive
the framebuffer used for mode setting and page flipping.

This also means various high level changes:

State, excluding configuring the cursor plane and creating/destroying
DRM framebuffer handles, are applied in the end of a clutter frame, in
one go. From an API point of view, this is done atomically, but as
mentioned, only the non-atomic implementation exists so far.

From MetaRendererNative's point of view, a page flip now initially
always succeeds; the handling of EBUSY errors are done asynchronously in
the MetaKmsImpl backend (still by retrying at refresh rate, but
postponing flip callbacks instead of manipulating the frame clock).
Handling of falling back to mode setting instead of page flipping is
notified after the fact by a more precise page flip feedback API.

EGLStream based page flipping relies on the impl backend not being
atomic, as the page flipping is done in the EGLStream backend (e.g.
nvidia driver). It uses a 'custom' page flip queueing method, keeping
the EGLStream logic inside meta-renderer-native.c.

Page flip handling is moved to meta-kms-impl-device.c from
meta-gpu-kms.c. It goes via an extra idle callback before reaching
meta-renderer-native.c to make sure callbacks are invoked outside of the
impl context.

While dummy power save page flipping is kept in meta-renderer-native.c, the
EBUSY handling is moved to meta-kms-impl-simple.c. Instead of freezing the
frame clock, actual page flip callbacks are postponed until all EBUSY retries
have either succeeded or failed due to some other error than EBUSY. This
effectively inhibits new frames to be drawn, meaning we won't stall waiting on
the file descriptor for pending page flips.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
bea7600471 logical-monitor: Pass output when iterating over CRTCs
While not currently used by any users, it'll be useful in future
commits.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
8932388dda backend/native: Move some KMS utilities to its own file
They are not strictly related to any of the KMS objects, and should be
reusable without adding a dependency on the non-meta-kms-* files in
meta-kms-*.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
2238c9f180 kms: Add API to register impl file descriptors
To let the MetaKmsImpl implementation register file descriptor GSource
where the invoke function is ensured to be executed in the impl context.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
ca21ca6745 kms: Add API to add a GSource that'll be invoked in the impl context
The MetaKmsImpl implementation may need to add a GSource that should be
invoked in the right context; e.g. a idle callback, timeout etc. It
cannot just add it itself, since it's the responsibility of MetaKms to
determine what is the impl context and what is the main context, so add
API to MetaKms to ensure the callback is invoked correctly.

It's the responsibility of the caller to eventually remove and destroy
the GSource.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
2bbd2e5563 kms: Add API to post callbacks out of the impl context
While the current impl context is in the same thread as the main
context, the separation still exists, and to post callbacks from the
impl context, it must pass MetaKms to make sure the callback is invoked
in the right context.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
691d58e69b gpu/kms: Remove unused typedef
https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
d84c7269b2 crtc/kms: Use MetaKmsPlane to check supported rotations and formats
Instead of manually retrieving supported transforms and formats from the
primary plane of the CRTC, use the MetaKmsPlane abstraction to find the
primary plane of the CRTC and check compatibility using the
MetaKmsPlane API. This removes the last user of direct KMS API usage
except for applying configuration.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
aba689312f gpu/kms: Init global mode list from MetaKmsConnectors
Instead of iterating over the available drmModeConnector objects to
construct a GPU wide mode list, use the state managed by
MetaKmsConnector. This also removes the last user of drmModeRes from
MetaGpuKms.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
f2d9a11013 output/kms: Outsource connector state fetching to MetaKmsConnector
As with CRTC state, variable connector state is now fetched via the
MetaKmsConnector. The existance of a connector state is equivalent of
the connector being connected. MetaOutputKms is changed to fetch
variable connector state via MetaKmsConnector intsead of KMS directly.
The drmModeConnector is still used for constructing the MetaOutputKms to
find properties used for applying configuration.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:56 +00:00
Jonas Ådahl
596376c408 crtc/kms: Outsource CRTC state fetching to MetaKmsCrtc
Move reading state into a struct for MetaCrtcKms to use instead of
querying KMS itself. The state is fetched in the impl context, but
consists of only simple data types, so is made accessible publicly. As
of this, MetaCrtcKms construction does not involve any manual KMS
interaction outside of the MetaKms abstraction.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
1f62a8dbd9 crtc/kms: Don't redefine META_MONITOR_N_TRANSFORMS
https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
f59d62bc8f kms: Add connector representation
Represents drmModeConnector; both connected and disconnected. Currently
only provides non-changing meta data. MetaOutputKms is changed to use
MetaKmsConnector to get basic metadata, but variable metadata, those
changing depending on what is connected (e.g. physical dimension, EDID,
etc), are still manually retrieved by MetaOutputKms.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
5d5d296551 gpu/kms: Fix connector id type in helper
It's a uint32_t, not a long.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
065bf752f4 output/kms: Make drmModeEncoderPtr array local
It was only used within one function, where it was always created, but
still was kept around indefinitely for no reason. Lets get rid of it
from the MetaOutputKms struct.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
4d3e804391 kms: Add plane representation
A plane is one of three possible: primary, overlay and cursor. Each
plane can have various properties, such as possible rotations, formats
etc. Each plane can also be used with a set of CRTCs.

A primary plane is the "backdrop" of a CRTC, i.e. the primary output for
the composited frame that covers the whole CRTC. In general, mutter
composites to a stage view frame onto a framebuffer that is then put on
the primary plane.

An overlay plane is a rectangular area that can be displayed on top of
the primary plane. Eventually it will be used to place non-fullscreen
surfaces, potentially avoiding stage redraws.

A cursor plane is a plane placed on top of all the other planes, usually
used to put the mouse cursor sprite.

Initially, we only fetch the rotation properties, and we so far
blacklist all rotations except ones that ends up with the same
dimensions as with no rotations. This is because non-180° rotations
doesn't work yet due to incorrect buffer modifiers. To make it possible
to use non-180° rotations, changes necessary include among other things
finding compatible modifiers using atomic modesetting. Until then,
simply blacklist the ones we know doesn't work.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
15a2ccd21b kms: Add CRTC representation
Add MetaKmsCrtc to represent a CRTC on the associated device. Change
MetaCrtcKms to use the ones discovered by the KMS abstraction. It still
reads the resources handed over by MetaGpuKms, but eventually it will
use only MetaKmsCrtc.

MetaKmsCrtc is a type of object that is usable both from an impl task
and from outside. All the API exposed via the non-private header is
expected to be accessible from outside of the meta-kms namespace.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
fef5753a19 backends/native: Add basic KMS abstraction building blocks
The intention with KMS abstraction is to hide away accessing the drm
functions behind an API that allows us to have different kind of KMS
implementations, including legacy non-atomic and atomic. The intention
is also that the code interacting with the drm device should be able to
be run in a different thread than the main thread. This means that we
need to make sure that all drm*() API usage must only occur from within
tasks that eventually can be run in the dedicated thread.

The idea here is that MetaKms provides a outward facing API other places
of mutter can use (e.g. MetaGpuKms and friends), while MetaKmsImpl is
an internal implementation that only gets interacted with via "tasks"
posted via the MetaKms object. These tasks will in the future
potentially be run on the dedicated KMS thread. Initially, we don't
create any new threads.

Likewise, MetaKmsDevice is a outward facing representation of a KMS
device, while MetaKmsImplDevice is the corresponding implementation,
which only runs from within the MetaKmsImpl tasks.

This commit only moves opening and closing the device to this new API,
while leaking the fd outside of the impl enclosure, effectively making
the isolation for drm*() calls pointless. This, however, is necessary to
allow gradual porting of drm interaction, and eventually the file
descriptor in MetaGpuKms will be removed. For now, it's harmless, since
everything still run in the main thread.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
f3fd7cf92b gpu/kms: Remove max buffer size getter
It was unused.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
5c500ad402 backend: Move GPU ownership from the monitor manager to the backend
Lets work towards making MetaMonitorManager about managing monitors, and
not about managing GPUs. This changes other units to keep a pointer to
the backend instead of a monitor manager, in case their ownership
changed, or their main usage of the monitor manager was to look up GPUs.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
e7fd068a78 monitor-manager/kms: Use 'hotplug' event from MetaUdev
Instead of dealing with udev details here, use the newly added 'hotplug'
event emitted from MetaUdev.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
171e5fc3c2 udev: Add 'hotplug' event
To be used my the monitor manager to handle hotplugs.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
7b7d881386 udev: Add helpers to list DRM devices
Will be used to move out some udev related logic when adding GPUs.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
44905d96da backends/native: Move some initialization from init() to initable_init()
This means we can report the errors properly, instead of logging a
warning and calling exit(1).

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
73e8127d5d backends/native: Add udev abstraction layer
To be used to signal devices added, hotplugs and other udev events.
Currently the only event emitted is when a device is added.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Jonas Ådahl
11e2005563 backends/native: Remove instance private
The object struct definition itself is private, so the object instance
private serves no purpose. Thus, move the fields into the object struct
and remove the instance private struct.

https://gitlab.gnome.org/GNOME/mutter/issues/548
https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
2019-06-20 13:31:55 +00:00
Hans de Goede
7fcdd60ac5 renderer-native: Fix compiler warning
Fix the following compiler warning:
../src/backends/native/meta-renderer-native.c: In function ‘meta_renderer_native_create_view’:
/usr/include/glib-2.0/glib/gmacros.h:523:17: warning: ‘formats’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  523 |     { if (_ptr) (cleanup) ((ParentName *) _ptr); }                                                              \
      |                 ^
../src/backends/native/meta-renderer-native.c:773:22: note: ‘formats’ was declared here
  773 |   g_autoptr (GArray) formats;
      |                      ^~~~~~~

https://gitlab.gnome.org/GNOME/mutter/merge_requests/632
2019-06-20 10:32:52 +02:00
Niels De Graef
769a02b630 cogl: Drop _COGL_RETURN_VAL_IF_FAIL macro
This was introduced when the Cogl maintainers tried to move away from
GLib. Since we always require it, we can just use
`g_return_val_if_fail()` immediately.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/629
2019-06-19 21:46:22 +02:00
Georges Basile Stavracas Neto
2464f00902
screen-cast-monitor-stream-src: Watch monitors using MetaStageWatch
This uses the API introduced by the previous commit. By watching specific
monitors directly, and not whole stage views, we avoid showing artifacts
on multi-monitor setups.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/424

https://gitlab.gnome.org/GNOME/mutter/merge_requests/623
2019-06-19 13:12:18 -03:00
Georges Basile Stavracas Neto
9b5d9f3cb3
stage: Introduce MetaStageWatch and family
MetaStageWatch, watch modes and the watch function are part
of the new stage view watching API. It's design does not
rely on signals on purpose; the number of signals that would
be emitted would be too high, and would impact performance.

MetaStageWatch is an opaque structure outside of MetaStage.

This will be used by the screencast code to monitor a single
view, which has a one-to-one relatioship to logical monitors.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/623
2019-06-19 13:12:17 -03:00
Jonas Ådahl
d9fb11b043 renderer/native: Fix EGLSurface destruction order
Make sure to destroy the EGL surface after releasing held buffers,
otherwise we'll get the following valgrind warnings:

==24016== Invalid read of size 8
==24016==    at 0x1739943F: release_buffer (platform_drm.c:73)
==24016==    by 0x49AC355: meta_drm_buffer_gbm_finalize (meta-drm-buffer-gbm.c:213)
==24016==    by 0x4B75B61: g_object_unref (gobject.c:3346)
==24016==    by 0x49B4B41: free_current_bo (meta-renderer-native.c:991)
==24016==    by 0x49B816F: meta_renderer_native_release_onscreen (meta-renderer-native.c:2971)
==24016==    by 0x5209441: _cogl_onscreen_free (cogl-onscreen.c:167)
==24016==    by 0x5208D81: _cogl_object_onscreen_indirect_free (cogl-onscreen.c:51)
==24016==    by 0x51C8066: _cogl_object_default_unref (cogl-object.c:103)
==24016==    by 0x5207989: _cogl_framebuffer_unref (cogl-framebuffer.c:1814)
==24016==    by 0x51C80B1: cogl_object_unref (cogl-object.c:115)
==24016==    by 0x53673C7: clutter_stage_view_dispose (clutter-stage-view.c:304)
==24016==    by 0x4B75AF2: g_object_unref (gobject.c:3309)
==24016==  Address 0x18e742a8 is 536 bytes inside a block of size 784 free'd
==24016==    at 0x4839A0C: free (vg_replace_malloc.c:540)
==24016==    by 0x17399764: dri2_drm_destroy_surface (platform_drm.c:231)
==24016==    by 0x1738550A: eglDestroySurface (eglapi.c:1145)
==24016==    by 0x5440286: eglDestroySurface (in /home/jonas/Dev/gnome/install/lib/libEGL.so.1.1.0)
==24016==    by 0x49613A5: meta_egl_destroy_surface (meta-egl.c:432)
==24016==    by 0x49B80F9: meta_renderer_native_release_onscreen (meta-renderer-native.c:2954)
==24016==    by 0x5209441: _cogl_onscreen_free (cogl-onscreen.c:167)
==24016==    by 0x5208D81: _cogl_object_onscreen_indirect_free (cogl-onscreen.c:51)
==24016==    by 0x51C8066: _cogl_object_default_unref (cogl-object.c:103)
==24016==    by 0x5207989: _cogl_framebuffer_unref (cogl-framebuffer.c:1814)
==24016==    by 0x51C80B1: cogl_object_unref (cogl-object.c:115)
==24016==    by 0x53673C7: clutter_stage_view_dispose (clutter-stage-view.c:304)
==24016==  Block was alloc'd at
==24016==    at 0x483AB1A: calloc (vg_replace_malloc.c:762)
==24016==    by 0x173997AE: dri2_drm_create_window_surface (platform_drm.c:145)
==24016==    by 0x17388906: _eglCreateWindowSurfaceCommon (eglapi.c:929)
==24016==    by 0x5440197: eglCreateWindowSurface (in /home/jonas/Dev/gnome/install/lib/libEGL.so.1.1.0)
==24016==    by 0x49612FF: meta_egl_create_window_surface (meta-egl.c:396)
==24016==    by 0x49B752E: meta_renderer_native_create_surface_gbm (meta-renderer-native.c:2538)
==24016==    by 0x49B7E6C: meta_onscreen_native_allocate (meta-renderer-native.c:2870)
==24016==    by 0x49B8BCF: meta_renderer_native_create_view (meta-renderer-native.c:3387)
==24016==    by 0x48D274B: meta_renderer_create_view (meta-renderer.c:78)
==24016==    by 0x48D27DE: meta_renderer_rebuild_views (meta-renderer.c:111)
==24016==    by 0x49BB4FB: meta_stage_native_rebuild_views (meta-stage-native.c:142)
==24016==    by 0x49A733C: meta_backend_native_update_screen_size (meta-backend-native.c:517)

https://gitlab.gnome.org/GNOME/mutter/merge_requests/622
2019-06-18 11:12:03 +02:00
Jonas Ådahl
56ddaaa380 renderer/native: Make sure we're not destroying an active EGLSurface
When making a new surface/context pair current, mesa may want to flush
the old context. Make sure we don't try to flush any freed memory by
unmaking a surface/context pair current before freeing it.

Not doing this results in the following valgrind warnings:

==15986== Invalid read of size 8
==15986==    at 0x69A6D80: dri_flush_front_buffer (gbm_dri.c:92)
==15986==    by 0x1750D458: intel_flush_front (brw_context.c:251)
==15986==    by 0x1750D4BB: intel_glFlush (brw_context.c:296)
==15986==    by 0x1739D8DD: dri2_make_current (egl_dri2.c:1461)
==15986==    by 0x17393A3A: eglMakeCurrent (eglapi.c:869)
==15986==    by 0x54381FB: InternalMakeCurrentVendor (in /home/jonas/Dev/gnome/install/lib/libEGL.so.1.1.0)
==15986==    by 0x5438515: eglMakeCurrent (in /home/jonas/Dev/gnome/install/lib/libEGL.so.1.1.0)
==15986==    by 0x522A782: _cogl_winsys_egl_make_current (cogl-winsys-egl.c:303)
==15986==    by 0x49B64C8: meta_renderer_native_create_view (meta-renderer-native.c:3076)
==15986==    by 0x48D26E7: meta_renderer_create_view (meta-renderer.c:78)
==15986==    by 0x48D277A: meta_renderer_rebuild_views (meta-renderer.c:111)
==15986==    by 0x49BF46E: meta_stage_native_rebuild_views (meta-stage-native.c:142)
==15986==  Address 0x1b076600 is 0 bytes inside a block of size 48 free'd
==15986==    at 0x4839A0C: free (vg_replace_malloc.c:540)
==15986==    by 0x49B59F3: meta_renderer_native_release_onscreen (meta-renderer-native.c:2651)
==15986==    by 0x5211441: _cogl_onscreen_free (cogl-onscreen.c:167)
==15986==    by 0x5210D81: _cogl_object_onscreen_indirect_free (cogl-onscreen.c:51)
==15986==    by 0x51D0066: _cogl_object_default_unref (cogl-object.c:103)
==15986==    by 0x520F989: _cogl_framebuffer_unref (cogl-framebuffer.c:1814)
==15986==    by 0x51D00B1: cogl_object_unref (cogl-object.c:115)
==15986==    by 0x536F3C7: clutter_stage_view_dispose (clutter-stage-view.c:304)
==15986==    by 0x4B7DAF2: g_object_unref (gobject.c:3309)
==15986==    by 0x4A9596C: g_list_foreach (glist.c:1013)
==15986==    by 0x4A9599A: g_list_free_full (glist.c:223)
==15986==    by 0x48D2737: meta_renderer_rebuild_views (meta-renderer.c:100)
==15986==  Block was alloc'd at
==15986==    at 0x483AB1A: calloc (vg_replace_malloc.c:762)
==15986==    by 0x69A76B2: gbm_dri_surface_create (gbm_dri.c:1252)
==15986==    by 0x69A6BFE: gbm_surface_create (gbm.c:600)
==15986==    by 0x49B4E29: meta_renderer_native_create_surface_gbm (meta-renderer-native.c:2221)
==15986==    by 0x49B57DB: meta_onscreen_native_allocate (meta-renderer-native.c:2569)
==15986==    by 0x49B6423: meta_renderer_native_create_view (meta-renderer-native.c:3062)
==15986==    by 0x48D26E7: meta_renderer_create_view (meta-renderer.c:78)
==15986==    by 0x48D277A: meta_renderer_rebuild_views (meta-renderer.c:111)
==15986==    by 0x49BF46E: meta_stage_native_rebuild_views (meta-stage-native.c:142)
==15986==    by 0x49A75B5: meta_backend_native_update_screen_size (meta-backend-native.c:520)
==15986==    by 0x48B01BB: meta_backend_sync_screen_size (meta-backend.c:224)
==15986==    by 0x48B09B7: meta_backend_real_post_init (meta-backend.c:501)

https://gitlab.gnome.org/GNOME/mutter/merge_requests/622
2019-06-18 11:12:03 +02:00
Jonas Ådahl
1efb32d300 renderer/native: Use g_set_error() instead of _cogl_set_error()
It's even a GError, so lets use the proper API.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/622
2019-06-18 11:12:03 +02:00
Emil Velikov
9213574870 renderer/native: add missing eglTerminate in EGLDevice error path
Currently the EGLDevice code gets the display and calls eglInitialize.
As a follow-up it checks the required EGL extensions - technically it
could check the EGL device extensions earlier.

In either case, eglTerminate is missing. Thus the connection to the
display was still bound.

This was highlighted with Mesa commit d6edccee8da ("egl: add
EGL_platform_device support") + amdgpu.

In that case, since the eglTerminate is missing, we end up reusing the
underlying amdgpu_device due to some caching in libdrm_amdgpu. The
latter in itself being a good solution since it allows buffer sharing
across primary and render node of the same device.

Note: we should really get this in branches all the way back to 3.30.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/619

Fixes: 934184e23 ("MetaRendererNative: Add EGLDevice based rendering support")
Cc: Jonas Ådahl <jadahl@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
2019-06-13 17:12:40 +01:00
Jonas Ådahl
4064d9a7a7 clutter: Remove ability to be user resizable
It's a functionality from the application centric clutter that we don't
need for compositors.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/616
2019-06-13 14:28:46 +00:00
Jonas Ådahl
178b975d6a cursor-renderer: Align OpenGL cursor rect to physical pixel grid
When stage views are scaled with fractional scales, the cursor rectangle
won't be aligned with the physical pixel grid, making it potentially
blurry when positioned in between physical pixels. This can be avoided
by aligning the drawn rectangle to the physical pixel grid of the stage
view the cursor is located on.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/413

https://gitlab.gnome.org/GNOME/mutter/merge_requests/610
2019-06-07 19:11:34 +00:00
Olivier Fourdan
a3b86447f7 backends: Add mouse accessibility settings
Add support for mouse accessibility settings to set the click assist
values.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/512
2019-06-06 13:04:50 +02:00
Olivier Fourdan
c33b330799 backends: Rename keyboard accessibility settings
Naming the keyboard accessibility settings `a11y_settings` wrongly
assumes there will never be any other type of accessibility settings.

Rename `a11y_settings` to `keyboard_a11y_settings` to avoid future
confusion.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/512
2019-06-06 13:04:50 +02:00
Olivier Fourdan
f6eb2a8cf8 settings: Remove space characters
Small code style cleanup.

https://gitlab.gnome.org/GNOME/mutter/issues/597
2019-06-03 09:34:31 +02:00
Georges Basile Stavracas Neto
57945a730f
backend: Conditionally compile MetaProfiler
MetaProfiler is not built when -Dprofiler=false, and that
breaks the build since MetaBackend unconditionally imports
and uses it.

Fix that by wrapping MetaProfiler in compile-time checks.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/603
2019-05-31 12:54:13 -03:00
Georges Basile Stavracas Neto
7810f0e276
cogl/trace: Add user-visible group name
This way, it shows up as "Compositor" in Sysprof instead of
"t:XYZ".

https://gitlab.gnome.org/GNOME/mutter/merge_requests/197
2019-05-31 11:57:09 -03:00
Georges Basile Stavracas Neto
17c5436f6e
profile: Add a Sysprof-based profiler
This exposes the /org/gnome/Sysprof3/Profiler object
inside Mutter to allow initiating a Sysprof capture.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/197
2019-05-31 11:57:07 -03:00
Pekka Paalanen
2145333969
renderer/native: Refactor into secondary_gpu_get_next_dumb_buffer
Extract the next buffer -logic into a new function. This allows to
simplify copy_shared_framebuffer_cpu () making it more readable.

This change is a pure refactoring, no functional changes.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/593
2019-05-29 11:53:00 -03:00
Florian Müllner
033ce2d956 input-mapper: Remove unnecessary return value
Since commit ae6d9e35bd, there is a fallback to META_MATCH_IS_BUILTIN,
so the condition for returning FALSE is never met.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/598
2019-05-28 14:34:32 +00:00
Florian Müllner
2b47e89405 renderer-x11-nested: Fix copy-and-paste error
The rounding added in commit c5471e5b8b mixed up some variables,
whoops.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/598
2019-05-28 14:34:32 +00:00
Marco Trevisan (Treviño)
b016ff29f6 cursor-renderer-native: Free MetaCursorNativePrivate struct
Fix a small leak in native renderer.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/581
2019-05-27 17:14:25 -05:00
Carlos Garnacho
b01edc22f3 backends/x11: Do not reload keymap on new keyboard notifications
XkbNewKeyboardNotify informs the client that there is a new keyboard
driving the VCK. It is essentially meant to notify that the keyboard
possibly has a different range of HW keycodes and/or a different
geometry.

But the translation of those keycodes remain the same, and we don't
do range checks or geometry checks (beyond using KEY_GRAVE as "key
under Esc", but that is hardly one). It seems we can avoid the
busywork that is releasing all our passive grabs, reloading the keymap
and regenerating the keycombos and restoring the passive grabs.

Closes: https://gitlab.gnome.org/GNOME/mutter/issues/398
2019-05-24 11:28:07 +02:00
Jonas Ådahl
91ac64bb44 drm-buffer: Make the "types" actual types
There is no reason why we should have an internal type enum when we have
all the infrastructure to just use multiple GObject types. Also there
was no code sharing between the old "types", the only common API was
getting the framebuffer ID, so lets make that a vfunc.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/584
2019-05-21 14:55:38 +00:00
Jonas Ådahl
ed56edc7ba drm-buffer: Remove useless soft-asserts
If triggered, many would result in crashes later anyway, so lets change
those to asserts. Some are simply useless, so remove those.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/584
2019-05-21 14:55:38 +00:00
Jonas Ådahl
6eeba2434a drm-buffer: Clean up file descriptor variable naming
Nowhere else is it called 'drm_fd' so lets not get rid of this
inconsistency.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/584
2019-05-21 14:55:38 +00:00
Jonas Ådahl
7fb7b28cd6 kms-buffer: Rename to MetaDrmBuffer
MetaKms* will be a dedicated namespace, which MetaKmsBuffer doesn't fit
under.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/584
2019-05-21 14:55:38 +00:00
Jonas Ådahl
08aec58c22 kms-buffer: Clean up include order
https://gitlab.gnome.org/GNOME/mutter/merge_requests/584
2019-05-21 14:55:38 +00:00
Benjamin Berg
52945f383d launcher: Explicitly look up object path for seat
If mutter is running as a systemd user service, then we cannot use the
magic "self" session for the ID lookup. For now we need to lookup the ID
explicitly. Eventually we can change to use the magic "auto" paths for
both the session and seat, but that will require systemd v243.

See also https://github.com/systemd/systemd/pull/12424#issuecomment-487962314

https://gitlab.gnome.org/GNOME/mutter/merge_requests/571
2019-05-21 16:43:09 +02:00
Daniel van Vugt
fecc57ddf0 renderer-native: Reference count front buffers
Start reference counting front buffers instead of assuming we know
their (scanout) lifetimes.

Functionally, this should not change anything.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/119
2019-05-21 15:49:42 +02:00
Marco Trevisan (Treviño)
91aee3d5c4 monitor: Assign monitor layout directly by crtc rect
There's no need to repeat what gcc can do alone.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/469
2019-05-21 08:50:09 +00:00
Carlos Garnacho
dae2c1d420 backends/native: Add rt-scheduler experimental key to set RT scheduling
This is similar to a change in kwin:
https://blog.martin-graesslin.com/blog/2017/09/kwinwayland-goes-real-time/

If the experimental features key has "rt-scheduler", make it claim the lowest
of RT scheduler priorities, this will be both educated to other RT processes
and improves responsiveness wrt all other processes.

This can only work if mutter/gnome-shell process receives CAP_SYS_NICE
somehow, e.g.: "setcap CAP_SYS_NICE=+ep `which gnome-shell`"

Closes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/921
https://gitlab.gnome.org/GNOME/mutter/merge_requests/460
2019-05-10 21:47:53 +00:00
Carlos Garnacho
ae6d9e35bd backends: Fallback to builtin panel for devices where all heuristics fail
This is 1) relatively likely as not all touchscreens are nice enough to
report a device size that will help us here and 2) Better than nothing if
everything fails anyway, as it will break on multi-monitor and non-default
monitor rotations.

Closes: https://gitlab.gnome.org/GNOME/mutter/issues/581
2019-05-03 15:01:47 +00:00
Jonas Ådahl
1ca0fdc928 idle-monitor: Postpone dispatching of idle timeout if not ready
If we update the ready time while the source is already in the
to-dispatch list, changing the ready time doesn't have any effect, and
the source will still be dispatched. This could cause incorrect idle
watch firing causing the power management plugin in
gnome-settings-daemon to sometimes turn off monitors due to it believing
the user had been idle for some time, while in fact, they just logged
back in.

Fix this by not actually dispatching the idle timeout if the ready time
is in the future when actually dispatching.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/543
2019-05-02 23:46:43 +00:00
Jonas Ådahl
23a8ea2821 idle-monitor: Use G_SOURCE_CONTINUE instead of TRUE
Returning TRUE is confusing, as it doesn't carry any relevant meaning.
Use G_SOURCE_CONTINUE to make it clearer that the source is here to
stay.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/543
2019-05-02 23:46:43 +00:00
Olivier Fourdan
eccf7b105c input-settings: Use 0 initialized struct for kbd a11y
Make sure our keyboard accessibility settings structure is all zero
initialized, to avoid potential padding issues on some platform when
comparing settings.

Reported by Daniel van Vugt on IRC.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/552
2019-04-26 11:17:50 +02:00
Pekka Paalanen
28419cdedf renderer/native: Check primary GPU supports EGL
Since "renderer/native: make EGL initialization failure not fatal" it is
possible, under specific failure conditions, to end up with a primary GPU whose
EGL initialization failed. That cannot work.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/521
2019-04-11 15:11:41 +03:00
Pekka Paalanen
3b46a8cd70 renderer/native: Make EGL initialization failure not fatal
The failure to initialize EGL does not necessarily mean the KMS device cannot
be used. The device could still be used as a "secondary GPU" with the CPU copy
mode.

If meta_renderer_native_create_renderer_gpu_data () fails,
meta_renderer_native_get_gpu_data () will return NULL, which may cause crashes.
This patch removes most of the failures, but does not fix the NULL dereferences
that will still happen if creating gpu data fails.

This patch reorders create_renderer_gpu_data_gbm () so that it fails hard only
if GBM device cannot be created, and otherwise always returns an initialized
gpu data structure. Users of the gpu data structure are responsible for
checking egl_display validity.

The GBM device creation failure is a hard failure because presumably GBM is
necessary for cursors.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/542
https://gitlab.gnome.org/GNOME/mutter/merge_requests/521
2019-04-11 15:11:41 +03:00
Jonas Ådahl
b2d0184c6e renderer-native: Freeze frames while retrying to page flip
We're currently always waiting for unfinished page flips before flipping
again. This is awkward when we are in an asynchronous retry-page-flip
loop, as we can synchronously wait for any KMS page flip event.

To avoid ending up with such situations, just freeze the frame clock
while we're retrying, then thaw it when we succeded.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:50:00 +00:00
Jonas Ådahl
808a75b231 renderer-native: Add helper to get backend from renderer
https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:49:59 +00:00
Jonas Ådahl
88e4ff7409 backend: Add API to freeze/thaw frame clock
It's just a thin wrapper around the ClutterStage API, with the intention
to hide the awkward nest of interdependent backends.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:49:59 +00:00
Jonas Ådahl
3cc3b7526c renderer-native: Fake page flipping slower when power saving
We rely on the frame clock to compress input events, thus if the frame
clock stops, input events are not dispatched. At the same time, there
is no reason to redraw at a full frame rate, as nothing will be
presented anyway, so slow down to 10Hz (compared to the most common
60Hz). Note that we'll only actually reach 10Hz if there is an active
animation being displayed, which won't happen e.g. if there is a screen
shield in the way.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:49:59 +00:00
Jonas Ådahl
53b59d8bff renderer-native: Fake page flipped if power saving when retrying
When we're in a page-flip retry loop due to the FIFO being full
(drmModePageFlip() failing with EBUSY), we should not continue to try
when starting to power save, as that means we're blocking new frames,
which itself blocks input events due to them being compressed using the
frame clock.

We'd also hit an assert assuming we only try to page flip when not power
saving.

Thus, fake we flipped if we ended up reaching a power saving state while
retrying.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/509

https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:49:59 +00:00
Jonas Ådahl
40e7e5d356 renderer-native: Fix page flip retry timeout calculation
It tried to add a (implicitly casted) float to a uint64_t, and due to
floating point precision issues resulted in timestamps intended to be
in the future to actually be in the past. Fix this by first casting the
delay to an uint64_t, then add it to the time stamp.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:49:59 +00:00
Jonas Ådahl
4cae9b5b11 monitor-manager: Clean up DPMS state tracking
DPMS is configured from a bit all over the place: via D-Bus, via X11 and
when reading the current KMS state. Each of these places did it slightly
differently, directly poking at the field in MetaMonitorManager.

To make things a bit more managable, move the field into a new
MetaMonitorManagerPrivate, and add helpers to get and set the current
value. Prior to this, there were for example situations where the DPMS
setting was changed, but without signal listeners being notified about
it.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/506
2019-04-02 13:49:59 +00:00
Jonas Ådahl
5199c7834d backends/native: Move underscan setting to MetaOutputKms
The 'underscan' property is a drm connector property, not a CRTC
property, so we would never find it. We also didn't advertise support
for the feature, meaning even if it was on the CRTC, Settings wouldn't
know about it.

Fix this by moving the property to where it belongs: in MetaOutputKms,
and properly advertise support for it if the property is found.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/507
2019-04-02 09:38:45 +00:00
Jonas Ådahl
1eabaf12da renderer/native: Make the EGLStreams operate in mailbox mode
This means eglSwapBuffers() wont dead lock if there is an old buffer pending
page flip. This could happen after e.g. mode changes or for other reasons.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/485
2019-03-25 17:29:25 +00:00