When a window is unrealized, a pending frame callback may never be
called, which could result in repeatedly freezing until the frame timer
fires after a second.
Fixes these symptoms when switching from fullscreen to windowed mode in
sauerbraten.
There's no need to keep track of the window which last performed a
Present flip. This fixes crashes due to the assertion in
xwl_present_flips_stop failing. Fixes issue #10.
The damage generated by a flip only needs to be ignored once, then
xwl_window::present_flipped can be cleared. This may fix freezing in
the (hypothetical) scenario where Present flips are performed on a
window, followed by other drawing requests using the window as the
destination, but nothing triggering xwl_present_flips_stop. The damage
from the latter drawing requests would continue being ignored.
There are logically server state not screen state. Not that multiple
screens works, at the moment, but that's no excuse to be sloppy.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Completing them from xwl_present_sync_callback had at least two issues:
* It was before the MSC was incremented in xwl_present_frame_callback,
so the MSC value in the completion event could be lower than the
target specified by the client. This could cause hangs with the Mesa
Vulkan drivers.
* It allowed clients to run at a frame-rate higher than the Wayland
compositor's frame-rate, wasting energy on generating frames which
were never displayed. This isn't expected to happen unless the client
specified PresentOptionAsync (in which case flips are still completed
from xwl_present_sync_callback, allowing higher frame-rates).
v2:
* Make xwl_present_has_events return true when there's a pending
"synchronous" flip, so those complete after at most ~1 second even if
the Wayland server doesn't send a frame event.
Bugzilla: https://bugs.freedesktop.org/106713
This prevents multiple scroll events happening for wayland compositors
which send axis values other than 10. For example, libinput will
typically return 15 for each scroll wheel step, and if a wayland
compositor sends those to xwayland without normalising them, 2 scroll
wheel steps will end up as 3 xorg scroll events. By listening for the
discrete_axis event, this will now correctly send only 2 xorg scroll
events.
The wayland protocol gurantees that there will always be an axis event
following an axis_discrete event. However, it does not gurantee that
other events (including other axis_discrete+axis pairs) will not happen
in between them. So we must keep a list of outstanding axis_discrete
events.
Signed-off-by: Scott Anderson <scott@anderso.nz>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The API init_wl_registry() and has_wl_interfaces() are marked as being
optional, but both GBM And EGLStream backends implement them so there is
point in keeping those optional.
Suggested-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
When retrieving the Wayland buffer from a pixmap, if the buffer already
exists, the GBM backend will return that existing buffer.
However, as seen with the Present issues, if the call had previously
passed a wrong size, that buffer will remain at the wrong size for as
long as the buffer exists, which is error prone.
Considering that the width/height passed to get_wl_buffer() is always the
actual pixmap drawable size, and considering that the EGLStream backend
makes no use of the size either, there is really no point in passing the
width/height around.
Simplify the xwl_glamor_pixmap_get_wl_buffer() and EGL backends API by
removing the pixmap size, and use the drawable size instead.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
To be able to check for availability of the Wayland interfaces required
to run a given EGL backend (either GBM or EGLStream for now), we need
to have each backend structures and vfuncs in place before we enter the
Wayland registry dance.
That basically means that we should init all backends at first, connect
to the Wayland compositor and query the available interfaces and then
decide which backend is available and should be used (or none if either
the Wayland interfaces or the EGL extensions are not available).
For this purpose, hold an egl_backend struct for each backend we are to
consider prior to connect to the Wayland display so that, when we get to
query the Wayland interfaces, everything is in place for each backend to
handle the various Wayland interfaces.
Eventually, when we need to chose which EGL backend to use for glamor,
the available Wayland interfaces and EGL extensions available are all
known to Xwayland.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Move EGL backends initialization to its own function in
xwayland-glamor.c
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Introduces a new egl_backend function to let the EGL backend check for
the presence of the required Wayland interfaces.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
EGL backend availability requires both EGL extensions and Wayland
interfaces to be present, so we will need to consider multiple backends
during initialization.
As a preliminary work, move the egl_backend to its own struct so that we
can have more than one backend at any given time.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Both xwl_glamor_init_wl_registry() and the Wayland global registry
handler use the interface id/name in that order, using name/id in the
egl_backend vfunc makes things confusing and error prone.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Functions such as:
xwl_glamor_egl_supports_device_probing()
xwl_glamor_egl_get_devices()
xwl_glamor_egl_device_has_egl_extensions()
Are of no use outside of EGLStream support, move them to the relevant
source file.
Similarly, the other glamor functions such as:
xwl_glamor_init()
xwl_screen_set_drm_interface()
xwl_screen_set_dmabuf_interface()
xwl_glamor_pixmap_get_wl_buffer()
xwl_glamor_init_wl_registry()
xwl_glamor_post_damage()
xwl_glamor_allow_commits()
xwl_glamor_egl_make_current()
Are useless without glamor support enabled, move those within a
a "#ifdef XWL_HAS_GLAMOR" in xwayland.h
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Make xwl_output_get_xdg_output() private, it doesn't need to be
available elsewhere.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
We probably don't want a fake crtc to be visible to clients, and we
definitely don't want to generate events every time we create such a
fake (which would happen as a side effect from RRCrtcCreate hitting
RRTellChanged). As it happens we're not actually using that crtc for
anything because xwayland doesn't store any state on the crtc object,
so it suffices to use the real crtc for the screen.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Tested-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Roman Gilg <subdiff@gmail.com>
Instead of reusing xwl_window introduce a persistent window struct for every
window, that asks for Present flips.
This struct saves all relevant data and is only freed on window destroy.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Tested-by: Olivier Fourdan <ofourdan@redhat.com>
This adds initial support for displaying Xwayland applications through
the use of EGLStreams and nvidia's custom wayland protocol by adding
another egl_backend driver. This also adds some additional egl_backend
hooks that are required to make things work properly.
EGLStreams work a lot differently then the traditional way of handling
buffers with wayland. Unfortunately, there are also a LOT of various
pitfalls baked into it's design that need to be explained.
This has a very large and unfortunate implication: direct rendering is,
for the time being at least, impossible to do through EGLStreams. The
main reason being that the EGLStream spec mandates that we lose the
entire color buffer contents with each eglSwapBuffers(), which goes
against X's requirement of not losing data with pixmaps. no way to use
an allocated EGLSurface as the storage for glamor rendering like we do
with GBM, we have to rely on blitting each pixmap to it's respective
EGLSurface producer each frame. In order to pull this off, we add two
different additional egl_backend hooks that GBM opts out of
implementing:
- egl_backend.allow_commits for holding off displaying any EGLStream
backed pixmaps until the point where it's stream is completely
initialized and ready for use
- egl_backend.post_damage for blitting the content of the EGLStream
surface producer before Xwayland actually damages and commits the
wl_surface to the screen.
The other big pitfall here is that using nvidia's wayland-eglstreams
helper library is also not possible for the most part. All of it's API
for creating and destroying streams rely on being able to perform a
roundtrip in order to bring each stream to completion since the wayland
compositor must perform it's job of connecting a consumer to each
EGLstream. Because Xwayland has to potentially handle both responding to
the wayland compositor and it's own X clients, the situation of the
wayland compositor being one of our X clients must be considered. If we
perform a roundtrip with the Wayland compositor, it's possible that the
wayland compositor might currently be connected to us as an X client and
thus hang while both Xwayland and the wayland compositor await responses
from eachother. To avoid this, we work directly with the wayland
protocol and use wl_display_sync() events along with release() events to
set up and destroy EGLStreams asynchronously alongside handling X
clients.
Additionally, since setting up EGLStreams is not an atomic operation we
have to take into consideration the fact that an EGLStream can
potentially be created in response to a window resize, then immediately
deleted due to another pending window resize in the same X client's
pending reqests before Xwayland hits the part of it's event loop where
we read from the wayland compositor. To make this even more painful, we
also have to take into consideration that since EGLStreams are not
atomic that it's possible we could delete wayland resources for an
EGLStream before the compositor even finishes using them and thus run
into errors. So, we use quite a bit of tracking logic to keep EGLStream
objects alive until we know the compositor isn't using them (even if
this means the stream outlives the pixmap it backed).
While the default backend for glamor remains GBM, this patch exists for
users who have had to deal with the reprecussion of their GPU
manufacturers ignoring the advice of upstream and the standardization of
GBM across most major GPU manufacturers. It is not intended to be a
final solution to the GBM debate, but merely a baindaid so our users
don't have to suffer from the consequences of companies avoiding working
upstream. New drivers are strongly encouraged not to use this as a
backend, and use GBM like everyone else. We even spit this out as an
error from Xwayland when using the eglstream backend.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Just a small autogenerated header that will soon contain more then just
one macro.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This takes all of the gbm related code in wayland-glamor.c and moves it
into it's own EGL backend for Xwayland, xwayland-glamor-gbm.c.
Additionally, we add the egl_backend struct into xwl_screen in order to
provide hooks for alternative EGL backends such as nvidia's EGLStreams.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
xwl_unrealize_window() would use freed xwl_window which can lead to
various memory corruption and crashes, as reported by valgrind:
Invalid read of size 8
at 0x42C802: xwl_present_cleanup (xwayland-present.c:84)
by 0x42BA67: xwl_unrealize_window (xwayland.c:601)
by 0x541EE9: compUnrealizeWindow (compwindow.c:285)
by 0x57E1FA: UnrealizeTree (window.c:2816)
by 0x581189: UnmapWindow (window.c:2874)
by 0x54EB26: ProcUnmapWindow (dispatch.c:879)
by 0x554B7D: Dispatch (dispatch.c:479)
by 0x558BE5: dix_main (main.c:276)
by 0x7C4B1BA: (below main) (libc-start.c:308)
Address 0xf520f60 is 96 bytes inside a block of size 184 free'd
at 0x4C2EDAC: free (vg_replace_malloc.c:530)
by 0x42B9FB: xwl_unrealize_window (xwayland.c:624)
by 0x541EE9: compUnrealizeWindow (compwindow.c:285)
by 0x57E1FA: UnrealizeTree (window.c:2816)
by 0x581189: UnmapWindow (window.c:2874)
by 0x54EB26: ProcUnmapWindow (dispatch.c:879)
by 0x554B7D: Dispatch (dispatch.c:479)
by 0x558BE5: dix_main (main.c:276)
by 0x7C4B1BA: (below main) (libc-start.c:308)
Block was alloc'd at
at 0x4C2FB06: calloc (vg_replace_malloc.c:711)
by 0x42B307: xwl_realize_window (xwayland.c:488)
by 0x541E59: compRealizeWindow (compwindow.c:268)
by 0x57DA40: RealizeTree (window.c:2617)
by 0x580B28: MapWindow (window.c:2694)
by 0x54EA2A: ProcMapWindow (dispatch.c:845)
by 0x554B7D: Dispatch (dispatch.c:479)
by 0x558BE5: dix_main (main.c:276)
by 0x7C4B1BA: (below main) (libc-start.c:308)
This is because UnrealizeTree() traverses the tree from top to bottom,
which invalidates the assumption that if the Window doesn't feature an
xwl_window on its own, it's the xwl_window of its first ancestor with
one.
This reverts commit 82df2ce3
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Present support in Xwayland relies on glamor, make sure Xwayland can
be built without glamor by moving references to Present code inside
the conditional GLAMOR_HAS_GBM.
Reported-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Roman Gilg <subdiff@gmail.com>
Queue present events to msc values. Fake msc events with a refresh rate of
about 60fps when flips are not possible. When flips are executed rely on
frame callbacks with a slow updating timer as fallback.
This is important for applications, that want to limit their framerate.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
When the compositor is not sending frame callbacks while we still wait
on buffer release events fake a continuous msc counter with a timer.
Having this timer is a prerequisite for queuing events.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Introduce support for Present's window flip mode. The support is not yet
complete, but works reasonable well for the most important use case, that
is fullscreen applications.
We take a Present flip and if the xwl_window->window has the same dimensions
as the presenting window, the flip is represented by a wl_buffer and attached
to the main wl_surface of the xwl_window.
After commit we are listening for the sync callback in order to tell Present,
that the pixmap flip is not longer pending, for the frame callback in order
to update the msc counter and for the buffer release callback in order to tell
Present that the pixmap is idle again.
The following functionality is missing from this patch:
* (slowed down) flips in case the compositor is not sending frame callbacks,
* queuing events to MSC times,
* per window flips for child windows with smaller size than the xwl_window.
To make use of this functionality Xwayland must run rootless and with
Glamor/GBM.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Add arguments to give the caller more information and control
over the creation of a wl_buffer with GBM, in particular let
the caller determine the size of the buffer.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Implement function added in DRI3 v1.1.
A newest version of libepoxy (>= 1.4.4) is required as earlier
versions use a problematic version of Khronos
EXT_image_dma_buf_import_modifiers spec.
v4: Only send scanout-supported modifiers if flipping is possible
v5: Fix memory corruption in XWayland (uninitialized pointer)
Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
It relies on GBM >= 17.1.0 where we can import BO with multiple
planes and a format modifier (GBM_BO_IMPORT_FD_MODIFIER).
v2: Properly free fds in Xwayland
[Also add glamor_egl_ext.h to Makefile.am for distcheck's sake - ajax]
Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
The xdg-output protocol aims at describing outputs in way which is
more in line with the concept of an output on desktop oriented systems.
For now it just features the position and logical size which describe
the output position and size in the global compositor space.
This is however much useful for Xwayland to advertise the output size
and position to X11 clients which need this to configure their surfaces
in the global compositor space as the compositor may apply a different
scale from what is advertised by the output scaling property (to achieve
fractional scaling, for example).
This was added in wayland-protocols 1.10.
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
The tablet/stylus interfaces reused xwl_seat->focus_window, which
would leave a somewhat inconsistent state of that variable for
wl_pointer purposes (basically, everything) if the pointer happened
to lay on the same surface than the stylus while proximity_out
happens.
We just want the stylus xwl_window to correctly determine we have
stylus focus, and to correctly translate surface-local coordinates
to root coordinates, this can be done using a different variable.
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
Tested-by: Olivier Fourdan <ofourdan@redhat.com>
Calling xwl_window_from_window means looping through the window ancestor
chain whenever it is called on a child window or on an automatically
redirected window.
Since these properties and the potential ancestor's xwl_window are constant
between window realization and unrealization, we can omit the looping by
always putting the respective xwl_window in the Window's private field on
its realization. If the Window doesn't feature an xwl_window on its own,
it's the xwl_window of its first ancestor with one.
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
The keyboard grabbing protocol for Xwayland is included in
wayland-protocol 1.9.
Update the wayland-protocol required version in both configure and meson
builds and add support for this new protocol in Xwayland.
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The 'tablet_tool_wheel' function for tablet scrolling was added back in
8a1defcc63 but left unimplemented. This commit fills in the necessary
details, using the "clicks" count as the number of discrete scroll up/down
events to send.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Xwayland doesn't override these, so we don't need defining those
in the xwl_screen struct.
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Hooked up a bit differently to the other tools. Those tools can be static for
all and be re-used. The wacom driver initializes the pad with the correct
number of buttons though and we can't do this until we have the pad done event.
If the tablet is removed and we plug a different one in, we should initialize
that correctly, so unlike the other tools the pad is properly removed and
re-initialized on plug.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
Each xwl_tablet_tool gets a xwl_cursor, as on wayland each of those
will get an independent cursor that can be set through
zwp_tablet_tool.set_cursor.
However, all tools (and the pointer) share conceptually the same VCP
on Xwayland, so have cursor changes trigger a xwl_cursor update on
every tool (and the pointer, again). Maybe Xwayland could keep track
of the most recent device and only update that cursor to get better
visual results, but this is simpler, and it's going to be odd
anyway...
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
This struct takes away the cursor info in xwl_seat, and has
an update function so we can share the frame handling code
across several xwl_cursors.
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
Make sure the button events are sent after the motion events into the new
position.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
Translates Wayland tablet events into corresponding X11 tablet events. As
with the prior commit, these events are modeled after those created by the
xf86-input-wacom driver to maximize compatibility with existing applications.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
Creates and maintains the canonical trio of X devices (stylus, eraser,
and cursor) to be shared by all connected tablets. A per-tablet trio
could be created instead, but there are very few benefits to such a
configuration since all tablets still ultimately share control of a
single master pointer.
The three X devices are modeled after those created by xf86-input-wacom
but use a generic maximum X and Y that should be large enough to
accurately represent values from even the largest currently-available
tablets.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
The wp_tablet_seat interface provides us with notifications as tablets,
tools, and pads are connected to the system. Add listener functions and
store references to the obtained devices.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
If we're notified about the existence of the wp_tablet_manager interface,
we bind to it so that we can make use of any tablets that are (or later
become) available. For each seat that exists or comes into existance at
a later point, obtain the associated tablet_seat.
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Ping Cheng <ping.cheng@wacom.com>
The X11 window manager (XWM) of a Wayland compositor can use the
_XWAYLAND_ALLOW_COMMITS property to control when Xwayland sends
wl_surface.commit requests. If the property is not set, the behaviour
remains what it was.
XWM uses the property to inhibit commits until the window is ready to be
shown. This gives XWM time to set up the window decorations and internal
state before Xwayland does the first commit. XWM can use this to ensure
the first commit carries fully drawn decorations and the window
management state is correct when the window becomes visible.
Setting the property to zero inhibits further commits, and setting it to
non-zero allows commits. Deleting the property allows commits.
When the property is changed from zero to non-zero, there will be a
commit on next block_handler() call provided that some damage has been
recorded.
Without this patch (i.e. with the old behaviour) Xwayland can and will
commit the surface very soon as the application window has been realized
and drawn into. This races with XWM and may cause visible glitches.
v3:
- introduced a simple setter for xwl_window::allow_commits
- split xwl_window_property_allow_commits() out of
xwl_property_callback()
- check MakeAtom(_XWAYLAND_ALLOW_COMMITS)
v2:
- use PropertyStateCallback instead of XACE, based on the patch
"xwayland: Track per-window support for netwm frame sync" by
Adam Jackson
- check property type is XA_CARDINAL
- drop a useless memcpy()
Weston Bug: https://phabricator.freedesktop.org/T7622
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Emulate pointer warps by locking the pointer and sending relative
motion events instead of absolute. X will keep track of the "fake"
pointer cursor position given the relative motion events, and the
client warping the cursor will warp the faked cursor position.
Various requirements need to be met for the pointer warp emulator to
enable:
The cursor must be invisible: since it would not be acceptable that a
fake cursor position would be different from the visual representation
of the cursor, emulation can only be done when there is no visual
representation done by the Wayland compositor. Thus, for the emulator
to enable, the cursor must be hidden, and would the cursor be displayed
while the emulator is active, the emulator would be destroyed.
The window that is warped within must be likely to have pointer focus.
For example, warping outside of the window region will be ignored.
The pointer warp emulator will disable itself once the fake cursor
position leaves the window region, or the cursor is made visible.
This makes various games depending on pointer warping (such as 3D
first-person shooters and stategy games using click-to-drag-map like
things) work.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Translate grabbing a pointer device with confineTo set to a window into
confining the Wayland pointer using the pointer constraints protocol.
This makes clients that depend on the pointer not going outside of the
window region, such as certain games and virtual machines viewers, to
function more properly.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
If there was an relative pointer motion within the same frame as an
absolute pointer motion, provide both the absolute coordinate and the
unaccelerated delta when setting the valuator mask.
If a frame contained only a relative motion, queue an absolute motion
with an unchanged position, but still pass the unaccelerated motion
event.
If the wl_seat advertised by the compositor is not new enough, assume
each relative and absolute pointer motion arrives within their own
separate frames.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Wait until wl_pointer.frame with dispatching the pointer motion event,
if wl_pointer.frame is supported by the compositor. This will later be
used to combine unaccelerated motion deltas with the absolute motion
delta.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Generating relative and absolute movement events from the same input
device is problematic, because an absolute pointer device doesn't
expect to see any relative motion events. To be able to generate
relative pointer motion events including unaccelerated deltas, create a
secondary pointer device 'xwayland-relative-pointer', and use that for
emitting relative motion events.
Signed-off-by: Krzysztof Sobiecki <sobkas@gmail.com>
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Will be used for getting unaccelerated motion events and later for
relative motions used by a pointer warp emulator.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
