Rather than storing the shadow_image in the untransformed space
and rotating on copy to hw_buffer we store both on the transformed
space. This means a copy between them is a straight copy, and that
apps supplying correctly transformed surface buffers need not
change them.
We also correctly handle all output transform including the previously
unhandled flipped ones, as well as client supplied buffer_transforms (which
were previously ignored).
We also simplify the actual rendering by just converting any damage
region to output coordinates and set it on a clip and composite
the whole buffer, letting pixman do the rectangle handling. This
means we always do all the transforms, including the surface positioning
as a pixman_image transform. This simplifies the code and sets us up
for handling scaling at a later stage.
The transform looks complicated, but in practice it ends up being
an integer translation almost always, so it will hit the pixman
fastpaths.
We pick the window scale/tranform based on what the output uses, which means
we can avoid rotations in the compositor, and get sharper rendering
in scaled outputs.
We used to just store the buffer size here which is not right if the
surface has a buffer_transform or a buffer_scale. To fix this we pass
the transform and scale into the toysurface prepare and swap calls and
move both the surface to buffer and the buffer to surface size
conversion there.
Without this interactive resize on the top or left sides of a transformed
or scaled surface will not work correctly.
Apparently some compilers complain about set but not used variables
'available' and 'bufs', but I don't get the warning. Still, separate the
debugging code from shm_surface_buffer_release(), so that we only
compute 'bufs' when it is printed. This should fix the warnings.
The debugging code now prints the shm_surface buffer state before and
after, instead of just after.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
The shell_grab_start function sets up a destroy notification on the
shell surface such that when the shell surface is destroyed the pointer
on the grab to the shell surface is set to NULL.
We must therefore check whether the shell surface is NULL and end the
grab if it is.
https://bugs.freedesktop.org/show_bug.cgi?id=64689
Mention, that sub-surfaces are not clipped to the parent.
Be more accurate on surface commit vs. apply state.
Mention the initial stacking order.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This patch fixes a crash with the surface_pong when one of the
seats doesn't have a pointer. This was the case with the RDP compositor
that use a fake seat with no mouse or keyboard.
This patch brings back the user environment from the shell.
In the future, weston-launch could create the Wayland socket earlier, in
which case the user's shell could be used to run Wayland-specific tools
in the new Weston session.
Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
The only way to create a sub-surface loop by recursive nesting is to
make the main surface (which does not have a role) a sub-surface of any
of its sub-surfaces. All other cases should already be cought.
This change checks for that exact case, and sends a protocol error.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
It should not be possible to create a loop by nesting sub-surfaces.
Currently Weston fails this test.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
wl_subsurface.set_desync should apply the cached wl_surface state.
Otherwise, the sub-surface may be stuck: a commit on the parent surface,
if desynchronized, will not commit the sub-surface because it is
desynchronized, too. A commit on the sub-surface may not happen, if it
is waiting for the frame callback from the previous commit.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add a test for varying the object destruction order in a complex
sub-surface tree.
This test attemps to fuzz the destruction of a sub-surface tree to make
sure the server does not crash on any wl_surface or wl_subsurface
destruction sequence.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
surface-global-test and surface-test did not get updated to
the new module_init(...) signature when it changed in
a50e6e4c50. Thus, they
failed to compile. Simply running 'make check' shows the
problem. This patch fixes it.
fixes https://bugs.freedesktop.org/show_bug.cgi?id=64691
Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com>
The subsurface patches changed the center_on_output() behavior a bit.
Instead of using the buffer width and height, it now looks at surface
geometry. In lock_surface_configure() we haven't set up the geometry
when we call center_on_output() so the lock surface would never show
up.
Just the same as it is done in shell.c, if the input method process exits
for any reason, we relaunch it automatically, as it is not possible to
launch a standalone application outside of the weston process.
In v2:
- Proper error message when giving up.
Signed-off-by: Eduardo Lima (Etrunko) <eduardo.lima@intel.com>
This set of changes adds support for searching for a given config file
in the directories listed in $XDG_CONFIG_DIRS if it wasn't found in
$XDG_CONFIG_HOME or ~/.config. This allows packages to install custom
config files in /etc/xdg/weston, for example, thus allowing them to
avoid dealing with home directories.
To avoid a TOCTOU race the config file is actually open()ed during the
search. Its file descriptor is returned and stored in the compositor
for later use when performing subsequent config file parses.
Signed-off-by: Ossama Othman <ossama.othman@intel.com>
The function drm_output_start_repaint_loop() unconditionally issues a
page flip, even if the crtc for that output has not been enabled yet.
That causes the page flip to fail, and drm_output_repaint() is never
called.
Solve this by bypassing the initial page flip if the output needs a
mode set.
This has the caveat of affecting latency predictability for that first
frame and when a "driver" mode fullscreen surface causes a mode set.
However, on both cases the mode set would take an unpredictable amount
of time anyway.
https://bugs.freedesktop.org/show_bug.cgi?id=63812https://bugs.freedesktop.org/show_bug.cgi?id=64183
This allows users to change the assigned display profile in GNOME (using
gnome-control-center) or KDE (using colord-kde) and also allows the profiling
tools to correctly inhibit the calibration state whilst measuring the native
screen response.
The subsurface-server-protocol.h header should not be included
by any headers that are part of the SDK since it is not exported.
Otherwise, SDK consumers will break during compilation.
Move this include from compositor.h to compositor.c.
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=64537
Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com>
In case a toytoolkit application manages to schedule resizes constantly,
throttle them to the main surface display.
When resizing, all surfaces are updated synchronously, so it also makes
sense to synchronize on the main surface's frame callback particularly.
Rendering any faster will not make sense.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Mesa's eglSwapBuffers() waits for the frame event from the previous
swapBuffers, before it returns. Apparently eglSwapInterval(), which
should be able to disable the wait, is unimplemented for now.
When a sub-surface contains an EGL widget, and the commit mode is
synchronized, the frame events will not be delivered to EGL until the
parent surface gets committed. Therefore rendering the EGL widget twice
would lead to a deadlock.
When the window is being resized, we need to force a repaint of the EGL
widget, too, to make the whole window consistent. For that, we need to
make sure the frame event from the previous eglSwapBuffers() actually
arrives.
This patch adds an extra wl_surface.commit(parent), when the window is
being resized, which should guarantee, that the previous eglSwapBuffers
gets its event.
To properly handle an EGL widget in a sub-surface, running in its own
thread, the EGL widget's automatic updates should be paused before
sending the extra wl_surface.commit(parent). A natural place for the
pause would be in the widget's resize hook. However, wl_surface.commit
cannot be called right after resize hooks, because it would commit new,
incomplete surface state. Therefore this patch is not enough for
threaded toytoolkit applications. Luckily those do not exist yet.
When eglSwapInterval() gets implemented, this patch should be reverted.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add a demo program with:
- a main surface (green)
- a Cairo-image sub-surface (red)
- a raw GLESv2 widget (triangle)
Sub-surface input region is set empty to avoid problems in toytoolkit.
If Cairo links to libGL, then we will end up with also libGLESv2 linked
to subsurfaces program, and both libs getting really used, which leads
to disaster.
Do not build subsurfaces demo, if Cairo links to libGL and cairo-egl is
usable.
The GL rendering loop is not tied to the toytoolkit or the widget, but
runs directly from its own frame callback. Therefore it runs
independent of the rest of the application. This also relies on one of
two things:
- eglSwapInterval(0) is implemented, and therefore eglSwapBuffers never
blocks indefinitely, or
- toytoolkit has a workaround, that guarantees that eglSwapBuffers will
return soon, when we force a repaint on resize.
Otherwise the demo will deadlock.
The code is separated into three sections:
1. The library component, using only EGL, GLESv2, and libwayland-client
APIs, and not aware of any toolkit details of the parent application.
This runs independently until the parent application tells otherwise.
2. The glue code: a toytoolkit application widget, who has its own
rendering machinery.
3. The application written in toytoolkit.
This patch also adds new toytoolkit interfaces:
- widget_get_wl_surface()
- widget_get_last_time()
- widget_input_region_add()
Toytoolkit applications have not had a possibility to change the input
region. The frame widget (decorations) set the input region on its own
when used, otherwise the default input region of everything has been
used. If a window does not have a frame widget, it can now use
widget_input_region_add() to set a custom input region.
These are not window methods, because a widget may lie on a different
wl_surface (sub-surface) than the window.
Changes in v3:
- replace set_commit_mode with set_sync and set_desync
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add redraw_needed flag to all surfaces, in addition to having one in
window. The window redraw_needed flag is changed to force a redraw of
the whole window, regardless of frame events.
widget_schedule_redraw() now schedules the redraw only for the surface,
where the widget is on. window_schedule_redraw() is equivalent to
scheduling a redraw for all (sub-)surfaces of the window.
We still use only one deferred task for all redraws.
surface_redraw() will skip the redraw, if the window does not force a
redraw and the surface does not need a redraw. It will also skip the
redraw, if the frame callback from the previous redraw has not triggered
yet. When the frame callback later arrives, the redraw task will be
scheduled, if the surface still needs a redraw.
If the window forces a redraw, the redraw is executed even if there is a
pending frame callback. This is for resizing: resizing should trigger a
window repaint, as it really wants to update all surfaces in one go, to
apply possible sub-surface size and position changes. Resizing is the
only thing that makes a window force a redraw.
With this change, subsurfaces demo can avoid repainting the cairo
sub-surface while still animating the GL sub-surface.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
The new application API window_add_subsurface() will create a plain
widget that is on a new sub-surface.
The sub-surface position is taken from the surface's root widget
allocation. This way widget allocations are always in the main surface
(i.e. window) coordinates. However, Cairo drawing coordinates will now
be different to widget coordinates for sub-surfaces. Cairo coordinates
are fixed by applying a translation in widget_cairo_create(), so that
widget drawing code can simply use the widget allocation as before.
Sub-surfaces are hooked up into resize, window flush, redraw, and
find_widget. Window maintains a list of sub-surfaces in top-first order.
Add a client settable default commit mode, and toggle the mode when
resizing to guarantee in-sync updates of a window and its sub-surfaces.
Changes in v3:
- replaced set_commit_mode with set_sync and set_desync
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Increase the maximum number of shm "leaves" to three, and rewrite the
leaf release and pick algorithms. The new algorithms hopefully improve
on buffer re-use while freeing unused buffers.
The goal of the new release algorithm is to always leave one free leaf
with storage allocated, so that the next redraw could start straight on
it.
The new leaf picking algorithm will prefer a free leaf that already has
some storage allocated, instead of just picking the first free leaf that
may need to allocate a new buffer.
Triple-buffering is especially for sub-surfaces, where the compositor
may have one wl_buffer busy on screen, and another wl_buffer busy in the
sub-surface cached state due to the synchronized commit mode. To be
able to forcibly repaint at that situation for e.g. resize, we need a
third buffer.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
We must calculate the bounding box of the surface + subsurfaces set and use
that when maximizing the window or going fullscreen.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
[pq: changed to weston_surface_get_main_surface(), and used a temporary
variable to clean up the expressions.]
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
The shell needs to redirect some actions to the parent surface, when
they originally target a sub-surface. This patch implements the
following:
- Move, resize, and rotate bindings always target the parent surface.
- Opacity (full-surface alpha) binding targets the parent surface. This
is broken, because it should change the opacity of the whole compound
window, which is difficult to implement in the renderer.
- click_to_activate_binding() needs to check the shell surface type from
the main surface, because sub-surface would produce SHELL_SURFACE_NONE
and prevent activation.
- Also activate() needs to check the type from the main surface, and
restack the main surface. Keyboard focus is assigned to the original
(sub-)surface.
- focus_state_surface_destroy() needs to handle sub-surfaces: only the
main surface will be in a layer list. If the destroyed surface is
indeed a sub-surface, activate the main surface next. This way a
client that destroys a focused sub-surface still retains focus in the
same window.
- The workspace_manager.move_surface request can accept also
sub-surfaces, and it will move the corresponding main surface.
Changes in v2:
- do not special-case keyboard focus for sub-surfaces
- fix surface type checks for sub-surfaces in shell, fix restacking of
sub-surfaces in shell, fix focus_state_surface_destroy()
Changes in v3:
- Renamed weston_surface_get_parent() to
weston_surface_get_main_surface() to be more explicit that this is
about sub-surfaces
- Fixed move_surface_to_workspace() to handle keyboard focus on a
sub-surface.
- Used a temporary variable in several places to clarify code, instead
of reassigning a variable.
- Fixed workspace_manager_move_surface() to deal with sub-surfaces.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
For testing the protocol behaviour only:
- linking a surface to a parent does not fail
- position and placement requests do not fail
- bad linking and arguments do fail
- passing a surface as a sibling from a different set fails
- different destruction sequences do not crash
- setting a surface as its own parent fails
- nesting succeeds
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Implement the basic protocol for sub-surfaces:
- expose wl_subcompositor global interface
- error checking on protocol calls
- associate a parent wl_surface to a sub-surface
- introduce the sub-surface role, which is exclusive
- an implementation of the wl_subsurface interface
- allow nesting of sub-surfaces
- proper surface transformation inheritance from parent to sub-surfaces
- two different modes of wl_surface.commit for sub-surfaces
- hook sub-surfaces up to repaint by modifying the repaint list code
Struct weston_subsurface is dynamically allocated. For sub-surfaces, it
is completely populated.
For parent surfaces, weston_subsurface acts only as a link for stacking
order purposes. The wl_resource is unused, parent_destroy_listener is
not registered, the transform is not linked, etc.
Sub-surfaces are not added directly into layers for display or input.
Instead, they are hooked up via the sub-surface list present in parent
weston_surface. This way sub-surfaces are inherently linked to the
parent surface, and cannot be displayed unless the parent is mapped,
too. This also eases restacking, as only the parent will be in a layer
list. Also, only the main surface should be subject to shell actions.
The surface list rebuilding in weston_output_repaint() is modified to
process sub-surface lists, if they are non-empty. The sub-surface list
always contains the parent, too, unless empty. The collection of
frame_callback_list is moved to a later loop, to streamline the surface
list rebuild functions.
Features still lacking are:
- full-surface alpha support for compound windows
Changes in v2:
- fix a bug in surface mapping: commit a sub-surface would cause the
main surface to never be mapped.
- remove debug printfs
- detect attempt of making a surface its own parent
- always zero-alloc weston_subsurface
- apply wl_subsurface.set_position in commit, not immediately
- add weston_surface_to_subsurface()
- implement sub-surface commit modes parent-cached and independent
- implement wl_subcompositor.destroy and wl_subsurface.destroy
Changes in v3:
- rebased, and use the new transform inheritance code
- squashed the commit "add sub-surfaces to repaint list"
- fixed a buffer reference leak in commit_from_cache()
- Rewrite the sub-surface destructor code, and make it leave the
wl_subsurface protocol object inert, if one destroys the corresponding
wl_surface.
- replaced set_commit_mode with set_sync and set_desync
- allowed sub-surface nesting, and fixed repaint accordingly
- implemented nested sub-surface commit modes
- Made the sub-surface order changes from wl_subsurface.place_above and
.place_below to be applied when the parent surface state is applied,
instead of immediately. This conforms with the protocol specification
now.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add protocol for sub-surfaces, wl_subcompositor as the global interface,
and wl_subsurface as the per-surface interface extension.
This patch is meant to be reverted, once sub-surfaces are moved into
Wayland core.
Changes in v2:
- Rewrite wl_subcompositor.get_subsurface description, and move mapping
and commit details into wl_subsurface description. Check the wording
in wl_subsurface.set_position description.
- Add wl_subsurface.set_commit_mode request, and document it, with the
commit_mode enum. Add bad_value error code for wl_subsurface.
- Moved the protocol into Weston repository so we can land it upstream
sooner for public exposure. It is to be moved into Wayland core later.
- Add destroy requests to both wl_subcompositor and wl_subsurface, and
document them. Experience has showed, that interfaces should always
have a destructor unless there is a good and future-proof reason to not
have it.
Changes in v3:
- Specify, that wl_subsurface will become inert, if the corresponding
wl_surface is destroyed, instead of requiring a certain destruction
order.
- Replaced wl_subsurface.set_commit_mode with wl_subsurface.set_sync and
wl_subsurface.set_desync. Parent-cached commit mode is now called
synchronized, and independent mode is desynchronized. Removed
commit_mode enum, and bad_value error.
- Added support for nested sub-surfaces.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Alexander Larsson
Pekka Paalanen
Kristian Høgsberg
Mun Gwan-gyeong
Rob Bradford
Pekka Paalanen
Hardening
Quentin Glidic
U. Artie Eoff
Ander Conselvan de Oliveira
Dima Ryazanov
Richard Hughes
Eduardo Lima (Etrunko)
Ossama Othman
Giulio Camuffo