It was needed to work around visual glitches in the wobbly windows
effect. Since the wobbly windows effect renders the animated window into
an offscreen texture, we don't need this workaround anymore.
Furthermore, rather than using half-pixel correction, it is more
desirable to use an offscreen texture as it results in simpler design.
Performance-wise, it's not that bad that we need to start looking for
other ways to get rid of the seams between window contents and deco.
The backend can now optionally wait for the scene to be created before
it updates its outputs, which is necessary for better atomic tests in
the DRM backend.
Currently, the implementation of the DecoratedClient and the decoration
renderer are strongly coupled. This poses a problem with the item based
design as the ultimate goal is to have scene items construct paint nodes
which are then fed to the renderer. The DecorationItem has to have
control over the decoration texture. Another issue is that the scene
cannot smoothly cross-fade between two window states if the decoration
is removed, e.g. from fullscreen mode to normal and vice versa.
This change moves the decoration renderer to the decoration item. With
the introduction of a generic scene texture atlas, we hope to get rid of
the decoration renderer altogether.
attachStreamConsumer and resetOutput are not called as part of the scene
render and as such the context might not be set.
All credit goes to Simon Spinner for his investigation.
BUG: 437573
With high DPI we can't use the image size as a logical size directly.
The other change is use of QPainter::drawImage(QRect target, QImage
image, QRect source)
This slightly confusing method uses logical pixels for the target, but
the source rect is in native pixels of the source.
BUG: 422342
If the egl backend gets deleted this leaves a dangling pointer. In
order to prevent crashes with QPainter or EglStreams also don't try
to create dmabuf textures without a EglGbmBackend.
So far we had a composition setup within kwinrc and kscreen. This
produces flickering sometime and makes the state a bit more flimsy.
This patch changes the kwin's behaviour to use the files produced by
kscreen which are anyways available down the line.
THis simplifies our behaviour down to just one format that we write to
and feed from. This also allows us to leverage it further by using this
format for default setups (which consist in the right file in
~/.local/share/kscreen).
One of the scene redesign goals is to make wayland surface items
re-usable. So we have the same rendering path for drag-and-drop icons,
software cursors, and window surfaces.
The biggest issue at the moment is that window pixmaps are tightly
coupled with scene windows.
This change de-couples window pixmaps from scene windows. In order to
achieve that, some architecture changes were made.
The WindowPixmap class was replaced with the SurfacePixmap class. A
surface pixmap is created by a surface item.
Under the hood, a SurfacePixmap will create a PlatformSurfaceTexture
object, which contains all the information necessary for the renderer.
The SceneOpenGLTexture class was removed. However, the GLX and the EGL
on X11 backends still mess with GLTexture's internals.
As is, kwin with the drm backend results in the most pleasant user
experience on Wayland. Given that and the fbdev being about to be
dropped, making libdrm a required dependency seems a reasonable decision.
This feature was implemented in commit a66eb1a5b9 earlier
Double tap wake up is not a feature to be implemented at compositor
level but rather at the hardware/kernel level. Double tap timer here
means when screen is turned off, libinput will continue to poll the
touchscreen for new events.
double-tap-to-wakeup is generally interrupt at driver/hardware level
which have ability to wake system up even from the sleep.
Provide a option to disable the double tap timer on kwin side for
devices which makes use of suspend since when in suspend kwin can not
wake device up, and that provides confusing user experience.
When a GPU has no outputs attached we need to release all resources and
close the fd to allow the driver to completely power down the GPU. This
is also required to allow the driver to be unloaded for VFIO.
Platform::prepareShutdown() was introduced to work around the issue
where the platform accesses destroyed OutputDeviceInterface objects.
Since we no longer query OutputDeviceInterface for output info, the
Platform::prepareShutdown() function can be dropped.
When we release the buffers that also removes the drm fbs.
This causes failing atomic commits that the atomic code
doesn't (yet) handle correctly, the result is a black
screen when compositing is restarted.
Most wayland-native apps provide buffers that aren't suitable
for direct scanout; the message usually only spams the log full
without proper reason or useful information
In the few cases where the framebuffer is needed, we'd get problems
because ioctl(KWIN_FB_NO_VSYNC) fails.
This removes the code entirely to just use a timer to refresh.
BUG: 436053
QPainter::setWindow() doesn't work as we expect if the device pixel
ratio of the paint device is less than 1, for example 0.5 or 0.75.
QPainter only allows the effective device pixel ratios that are greater
than or equal to 1. This restriction probably has to be lifted.
For the time being, this change introduces a helper function that can be
used to determine the scale factor by which QPainter::window() must be
multiplied.
BUG: 432766
Instead of deleting all blob properties without a valid
blob check for the blob existing before using it. This is
necessary because some properties are needed even without
currently valid blobs.
BUG: 435786
While the session is inactive, the drm master permissions are revoked.
Therefore, we cannot perform things such as modesetting, etc. It also
makes no sense to create or destroy DrmOutput objects.
CCBUG: 435941
This reverts commit 5a22deda3b.
We still need more work to finish the DrmPipeline. At the moment, there
are a few major issues, e.g. some outputs not turning on, output
transforms not working correctly, a crash when changing dpms mode.
Let's merge this change back once all major issues are fixed and after
more testing.
We'd be relying on AbstractEglDrmBackend on calling cleanup but we'd be
doing it when cleanupSurfaces cannot be reached out anymore, turning it
into a half-baked cleanup.
Instead call cleanup from the leaf class destructors.
DrmPipeline is what now contains all the drm bits related to
modesetting and presentation, instead of that being in DrmOutput.
This gives a lot more freedom for managing drm resources and
enables far better usage of the atomic API with guaranteed
immutability for failed tests.
At the moment a streamed screen when the screen scale was differnt
buffer scale would render wrong. This change addresses it by
compensating it.
This change compensates it resizing the rendered viewport to their
difference.
BUG: 428594
The stream object was deleted from a slot connected to its stopStreaming
signal. This is unsafe and can lead to memory corruption and ultimately
crashes when PipWwire streaming is stopped. Use deleteLater instead.
BUG: 428268 435588
With the introduction of stripped down window items, the WindowPixmap
objects no longer form a hierarchy. WindowPixmap::children() method was
removed.
Surprisingly, the removal of the children() method didn't result in a
compilation error because the QObject class has a method with the same
name.
Currently, a window pixmap will have no QObject children even if the
associated wayland surface has child sub-surfaces. This may result in
blank thumbnails of apps that use sub-surfaces, e.g. Firefox. In order
to fix that issue, we need to check if there are child items instead.
Currently, output properties are looked up either on the wl_output
object or the output device object. This puts a hard dependency on the
wayland server in the platforms.
This change intends to fix some flaws in the current output
abstractions, and allow creating/destroying wayland-specific globals as
we wish.
With the work done in this patch, the need for the AbstractWaylandOutput
class is unclear, and it might be a good idea to merge it with the base
AbstractOutput class.
Currently, we inhibit renderloops when switching to another TTY, and unhibit
when switching back. When we hotplug a display while switched to another TTY,
its renderloop isn't inhibited by default, yet when we switch back, we try
to uninhibit the fresh renderloop, which triggers an assert.
Inhibiting newly created outputs while switched to another TTY fixes this crash.
BUG: 435388
FIXED-IN: 5.21
The connector name is not relevant to applications or
users - expectation is that the same physical monitor always gets the
same name, regardless of how it's connected. If no serial is available,
fall back to the old scheme to prevent multiple connected outputs from
having the same name.
The value that the DrmCrtc::resIndex() function returns is better known
as "pipe index." This change renames the method to match the terminology
used by kernel developers and other compositor developers.
