Using opaque painting paths can have a big impact on painting performance.
In order to easily validate whether we use the opaque paths, add a opaque
(green) or blended (purple) overlay over painted areas if the
`META_DEBUG_PAINT_OPAQUE_REGION` `MetaDebugPaintFlag` is set.
You can do so in `lg` via:
`Meta.add_debug_paint_flag(Meta.DebugPaintFlag.OPAQUE_REGION)`
This can be helpful for application developers, as previously it was not
trivial to check whether e.g. Wayland or X11 opaque regions where
properly set.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1372
In certain situations it's desirable to keep pipelines around for
the whole lifetime of the session. In order to not leak them and
properly clean them up on shutdown, introduce a new mechanism to
create named pipelines that are bound to their correstponding
context and may be used across file boundries.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1372
Analogous to `ClutterDrawDebugFlag` but intended for concepts that
are not present in Clutter, such as Wayland/X11 opaque regions.
Also add the first flag for the later.
To set the flag, run:
`Meta.add_debug_paint_flag(Meta.DebugPaintFlag.OPAQUE_REGION)`
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1372
This is no longer directly related to DBus messages, but our own event
queue. Change the wording and use CLUTTER_PRIORITY_EVENTS to make it
bolder, even though it's the same than G_PRIORITY_DEFAULT.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1286
We set an idle to coalesce multiple IM events together, as the protocol
requires us to send them in one frame, and unfortunately there is no
idea about whether more IM events are upcoming.
One good hint though are key events generated from the IM, we want to
apply all IM changes before the key event is processed, so make it sure
that the .done event is flushed before the key event is handled.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1286
These are not given directly to the input focus anymore, instead
queued up as events. This way, all actions triggered by the input
method (commit and preedit buffer ones, but also synthesized key
events) queue up the same way, and are thus processed in the exact
same order than they are given to us.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1286
The clutter_input_focus_filter_key_event() function has been made
a more generic filter_event(). Besides its old role about letting
key events go through the IM, it will also process the IM events
that are possibly injected as a result.
Users have been updated to these changes.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1286
When in the overview culling via `self->clip_region` is unavailable.
The region is `NULL` because the paint call has not originated from a
`WindowGroup`, because the overview does not use `WindowGroup`.
So the main wallpaper was being painted in full while in the overview.
That's a waste of effort because `redraw_clip` is going to be used to
stencil/scissor out only the parts that are changing. We don't need to
paint *most* of the wallpaper, only the parts behind anything changing.
For the overview this reduces GPU power usage (intel_gpu_top) roughly
10% and reduces render times almost as much.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1363
`meta_background_content_paint_content` was mixing two different
coordinate systems in `actor_pixel_rect`. It was initialized with
actor-local coordinates and then `if (self->clip_region)` would be
treated as stage coordinates. This worked because `self->clip_region`
was only non-NULL outside of the overview where both coordinate systems
were the same. So it always got the right answer, possibly by accident.
In order to enhance the function however we will need to know which
coordinate system we're working in, so now we make it explicit.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1363
Previously we only culled actors that didn't intersect the bounding box
of the redraw clip. Now we also cull those whose paint volume bounds don't
intersect the arbitrary shape of the redraw clip.
This was inspired by the activities overview where idle windows and
workspace previews were being needlessly repainted. In that particular
case this yields more than 10% reduction in render time. But it probably
helps in other situations too.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1359
There's no need to update the outputs recursively in case the actor gets
mapped or unmapped. That's because mapping happens recursively itself,
so if a window with multiple subsurfaces is shown, all subsurfaces will
receive a "notify::mapped" signal.
Since this was the only remaining user of
meta_wayland_surface_update_outputs_recursively(), we can now remove
that function.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1358
Since we now listen to the "stage-views-on-changed" signal (which
"catches" all the changes we want) on MetaWaylandActorSurfaces for
updating the wl_outputs the surface is on, we no longer need to call
meta_wayland_surface_update_outputs_recursively() on all geometry
changes, so remove that signal handler.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1358
ClutterActors new "stage-views-changed" signal fits pretty well for the
updating of wl_outputs a MetaWaylandActorSurface is on: With that signal
we get notified if the surface moved to a different CRTC, of which every
output has at least one.
So start listening to that signal, which fixes a bug where the wl_output
of a surface changes, but its allocation remains the same (which means
no signals triggering an update of the outputs will be emitted) and no
enter/leave events for the new wl_outputs are sent to the client. This
can happen when a monitor is hotplugged but the new allocation is
exactly the same as the old one even though it's on a different monitor.
Since the "stage-views-on-changed" signal will also get emitted when a
parent actor of the surface is moved, this means we can now remove the
call to meta_wayland_surface_update_outputs_recursively() on window
position changes or the completion of window-effects.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1358
QXL doesn't support mmap():ing a DMA buffer allocated in mutter inside
the PipeWire stream consumer process. To make screen casting work again
on QXL, disable DMA buffer based screen casting for QXL.
Eventually, it should be the client that renegotiates the supported
buffer types, but until then we need this list.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1318
The X server, including Xwayland, can be compiled with different X11
extensions enabled at build time.
When an X11 extension is built in the X server, it's usually also
enabled at run time. Users can chose to disable those extensions at run
time using the X server command line option "-extension".
However, in the case of Xwayland, it is spawned automatically by the
Wayland compositor, and the command line options are not configurable
by users.
Add a new setting to disable a selected set of X extension in Xwayland
at startup, without needing to rebuild Xwayland.
Of course, if Xwayland is not built with a given extension support in
the first place (which is the default for the security extension for
example), that option has no effect.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1405
Delay the addition and removal of devices using ClutterDeviceEvent's so that
they are processed following the libinput event order, and that we don't
have to flush the events on removal.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1371
When a device is removed from the seat the events that this device may have
emitted just before being removed might still be in the stage events queue,
this may lead a to a crash because:
Once the device is removed, we dispose it and the staling event is
kept in queue and sent for processing at next loop.
During event processing we ask the backend to update the last device
with the disposed device
The device is disposed once the events referencing it, are free'd
The actual last device emission happens in an idle, but at this point
the device may have been free'd, and in any case will be still disposed
and so not providing useful informations.
To avoid this, once a device has been added/removed from the seat, we queue
ClutterDeviceEvent events to inform the stack that the device state has
changed, preserving the order with the other actual generated device events.
In this way it can't happen that we emit another event before that the
device has been added or after that it has been removed.
Fixes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1345
Clutter device events are special events coming from the backend when an
input device is added or removed.
When such events are processed, we should make the seat to handle them by
calling vfunc that can be implemented by each backend and eventually
emitting the appropriate signal.
If a device is removed, we can also safely dispose it, as it can be
considered stale at this point.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1371
Add clutter device added and removed events to allow processing of them as
it happens in the backends, queuing them and performing actions in order.
This allows not to loose any event that is performed just before removing or
disabling a device, and still process the events in order in the event
queue.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1371
When removing a device that has been just marked as the last in use, we may
try to notify that a NULL device is the last one.
This is not supported, as both update_last_device() and the clients of the
"::last-device-changed" signal are assuming that the last device is always
a valid ClutterInputDevice.
So let's avoid erroring, and stop the idle when clearing the current device.
Related to: https://gitlab.gnome.org/GNOME/mutter/-/issues/1345https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1371
A GAppInfo is not guaranteed to have a filename or an application (or
rather a desktop ID). Add a check for application_id to be non-NULL
before trying to call sn_launcher_set_application_id, which would crash
otherwise.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1392
PipeWire reuses buffers, and buffer metadatas, when streaming. When
the cursor is moved to outside the stream, the cursor meta also needs
to be updated, otherwise it'll use the cursor position of whatever is
in the buffer.
Don't bail out when cursor is outside the stream, and ensure to record
a metadata-only frame. This only applies to metadata streams.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1417
If we returned early in one of the checks but already assigned the
surface role, we'd later run into a double-free and crash. Just do
the checks at the beginning.
Also add a missing return statement that was left out in commit
88ff196fe3 and tighten the parent surface check.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1415
The spec allows `parent_resource` to be `NULL`, requiring the parent
surface to get specified by some other protocol. Send a protocol error
with some meaningful explanation instead of crashing.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1408
Currently, the maximum size for a mouse pointer bitmap for screen
casting is 64x64 pixels.
However, this limit is hit way too often as it is way too low and
results in crashes in either gnome-remote-desktop or mutter.
For example: The a11y settings in g-c-c allow setting a larger pointer
bitmap in order to increase the visibility of the mouse pointer.
With the current limit of 64x64 pixels it is not possible to use the
larger variants of the default mouse pointer bitmap, without
experiencing any crash.
Another way to hit the limit is when display scaling is used or some
game uses a custom (large) mouse pointer bitmap.
The VNC backend in gnome-remote-desktop does not seem to have a maximum
pointer bitmap size.
The RDP backend on the other hand has a maximum pointer bitmap size at
384x384.
Use this size (384x384) as maximum size instead of the current 64x64
size for mouse pointer bitmaps to avoid crashes in mutter and
gnome-remote-desktop and to ensure that bigger mouse pointer bitmaps
can be used.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1414
