Summary:
This is the initial implementation of a DRM backend based on the EGLDevice,
EGLOutput, and EGLStream extensions, supporting NVIDIA graphics hardware using
their proprietary driver. The new backend will be used if the environment
variable KWIN_DRM_USE_EGL_STREAMS is set. On initialization, it will attempt to
create an EGLDevice based on the DRM device currently in use and create
EGLOutputs and EGLStreams for any attached displays. These are used to control
presentation of the final composited frame. Additionally, it will register the
wl_eglstream_controller Wayland interface so that native EGL windows created by
clients can be attached to an EGLStream allowing buffer contents to be shared
with the compositor as a GL texture.
At this time there are two known bugs in the NVIDIA driver's EGL implementation
affecting desktop functionality. The first can result in tooltip windows drawn
by plasmashell to contain incorrect contents. The second prevents KWayland from
being able to query the format of EGLStream-backed buffers which interferes
with the blur effect. Fixes for both of these are currently in development and
should appear in an upcoming NVIDIA driver release.
Additionally, hardware cursors are currently not supported with this backend.
Enabling them causes the desktop to intermittently hang for several seconds.
This is also likely a bug in the NVIDIA DRM-KMS implementation but the root
cause is still under investigation.
Test Plan:
On a system with an NVIDIA graphics card running a recent release of their
proprietary driver
* Ensure the nvidia_drm kernel module is loaded with the option "modeset=1"
("# cat /sys/module/nvidia_drm/parameters/modeset" should print "Y")
* Ensure EGL external platform support is installed
https://github.com/NVIDIA/eglexternalplatform
* Ensure KWin was build with the CMake option
KWIN_BUILD_EGL_STREAM_BACKEND=ON (this is the default)
* Start a plasma wayland session with the environment variable
KWIN_DRM_USE_EGL_STREAMS set
* Ensure output from KWin OpenGL initialization indicates the NVIDIA EGL
driver is in use (as opposed to Mesa / llvmpipe).
* Desktop should be fully functional and perform smoothly.
Reviewers: #kwin, romangg, davidedmundson
Reviewed By: #kwin, romangg, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D18570
Summary:
Currently there is no any good reason for keeping ScopedDrmPointer;
providing our own deleter for QScopedPointer would make more sense.
Given that we already have type that acts as a scoped pointer for drm
objects we can improve it a bit and make simpler, e.g.
DrmScopedPointer<drmModeConnector> connector;
is much simpler than
ScopedDrmPointer<_drmModeConnector, &drmModeFreeConnector> connector;
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: apol, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D19905
Summary: Like we do on inverted mode
Test Plan: Not much, because we don't support portrait mode on intel hardware just yet. I can see the cursor properly rotated before drm tells us to fall back to the previous configuration.
Reviewers: #kwin, #plasma, graesslin
Reviewed By: #kwin, #plasma, graesslin
Subscribers: zzag, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D19710
Summary:
The current refresh rate is stored in OutputInterface. Move the getter
therefore in the AbstractOutput class.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D16793
Summary: Removes unneeded includes and reorders the code in a sensible way.
Reviewers: #kwin
Subscribers: davidedmundson, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D16792
Summary:
Set the mode in AbstractOutput and call into the plugin
for final change on hardware.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: davidedmundson, kwin
Tags: #kwin
Maniphest Tasks: T10016
Differential Revision: https://phabricator.kde.org/D16786
Summary:
Wayland output is on protocol level and not dependent on the hardware
platform. Next steps are to do the same for output device and then let
the virtual output call into these initializing functions as well.
Test Plan: Manually and auto test.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: davidedmundson, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D16783
Summary:
With the new Output class we can set the gamma directly here. This is also
a stepping stone to adjust individual output gamma adjustment later on.
This means any future backend, which aims to support the color correction
frontend needs to use the Output class.
Test Plan: Night Color test still passes.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D11803
Summary:
In order to separate high-level properties of individual outputs from
hardware-specific ones and access these, introduce a new generic class Output.
Also make the DrmOutput class directly a child class of this generic class.
The long-term goal is to get rid of the Screens global object on Wayland and
instead directly work with Output objects on compositing level.
This should enable us long-term to do direct scanout to hardware planes, what
I predict needs this generic output representation at one point.
Test Plan: Manually.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D11781
Summary:
The kwin code was written to treat scale as non integers, we just need
to switch to the relevant float version of methods.
Test Plan:
Used kscreen-doctor to change this
Konsole resized as appropriate
Plasmashell was all broken, but that's expected until QScreen::size is based on the
xdg-output virtual size
Reviewers: #kwin, mart, graesslin, romangg
Reviewed By: #kwin, mart, graesslin
Subscribers: romangg, zzag, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D13616
Summary:
To do so leaves a dangling pointer on our pageFlipHandler
BUG: 396272
Test Plan: Wobbled a window whilst plugging a monitor in and out
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D14210
Summary:
We pass the buffer scale of the cursor through QImage::devicePixelRatio.
When copying the cursor with QPainter use Qt's in-built functionality to
handle resizing the cursor pixmap as necessary to match the screen.
As we're now resizing the cursor, the hotspot needs translating from
logical to device co-ordinates.
Test Plan: Used with associated patches
Reviewers: #kwin, graesslin
Reviewed By: #kwin, graesslin
Subscribers: graesslin, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D13605
Test Plan:
Very minimal expansion of unit tests which uses WaylandScreens
Wrote mini app to debug actual output of xdg-output for testing the DRM code
Main relevant user of this is xwayland > 1.20 which I don't have, so that
part remains untested
Reviewers: #plasma, graesslin
Reviewed By: #plasma, graesslin
Subscribers: romangg, graesslin, bshah, kwin
Tags: #kwin
Maniphest Tasks: T8501
Differential Revision: https://phabricator.kde.org/D12243
Summary:
We need to keep the DrmOutput object to still have the
WaylandOutputDevice.
Screens currently start off enabled as before.
In order to keep KWin to have a correct index based list of screens we
need to store a second vector of currently enabled outputs for the
screens interface.
Test Plan:
Had dual screens.
Disabled/Enabled each one through the kscreen KCM
Reviewers: #plasma, graesslin
Reviewed By: #plasma, graesslin
Subscribers: ngraham, luebking, broulik, graesslin, plasma-devel, kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8796
Summary:
This is a tiny refactor so that DrmOutput can have WaylandOutput
dynamically
deleted and recreated at runtime as we disable outptuts.
Reviewers: #plasma, graesslin
Reviewed By: #plasma, graesslin
Subscribers: plasma-devel, kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8794
Summary:
This change introduces an OrientationSensor class which wraps a
QOrientationSensor. The OrientationSensor is hold by Screens and gets
enabled if Screens knows about an internal (e.g. LVDS) display which
supports rotation. In addition the OrientationSensor holds an KSni to
enable/disable the automatic rotation support.
The drm platform plugin is adjusted to make use of the OrientationSensor.
The API is defined in a way that this can also be implemented on other
platforms supporting rotation. Most important are hwcomposer and X11
standalone. The latter should be straight forward as rotation is provided
through XRandR. The former needs addition for rotation support first.
Test Plan: Rotated my Yoga 12
Reviewers: #kwin, #plasma, sebas
Subscribers: plasma-devel
Tags: #plasma
Differential Revision: https://phabricator.kde.org/D8699
Summary:
While KWin gained support for changing modes it did not yet forward it
to the Wayland OutputInterface. This change implements this missing todo
by finding the matching mode and marking it as current.
Test Plan: Run kinfocenter to verify the current mode is properly set.
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8578
Summary:
This change fixes the hotspot calculation by introducing a dedicated
matrix to map the hotspot.
To better test the hotspot a small test application is added. The app
renders a red point at the cursor position and uses a cross for cursor
with the hotspot position being transparent. So if KWin renders the
cursor at the correct position a red point is visible in the center of
the cross. The test app supports several cursor hotspot positions:
* center (default)
* top left
* top right
* bottom right
* bottom left
To switch between the variants press the space key.
Test Plan:
Rotated screen, used test app to verify the hotspot is
correct. Also scaled display, still correct
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8668
Summary:
So far all outputs shared the same dumb buffer for the cursor image.
This doesn't work any more when screen rotation is enabled. For rotated
screens the cursor image per output is different. On some it might be
rotated, on some not.
To solve this problem the dumb buffers are moved from the DrmBackend to
the DrmOutput. The DrmOutput now creates the cursor images itself and
can rotate them if needed. Thus we get nicely transformed cursors.
Test Plan: Rotated screens, moved cursor around, image properly rotated
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8664
Summary:
This change refactors the way how the cursor position on a screen is
calculated. It is changed to a matrix multiplication with the
adjustments for the rotated screen just being additional steps added to
the matrix.
With this calculation I got correct positions for all variants of
scaled, rotated and differently positioned outputs.
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8627
Summary:
When KWin successfully presents a new mode, it stores the current state
as the last working mode. If a new modeset is requested and the atomic
test fails, all is undone and reverted to this last knowing mode.
Currently included are:
* the mode
* global position
* transformation
This is only done on a modeset not when going to DPMS.
Test Plan:
Selected the not working vertical rotation and nothing bad
happened.
Reviewers: #kwin, #plasma, subdiff
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8602
Summary:
This change hooks up the drm plane rotate with the rotation requests
from KScreen. Our requests support more than what KScreen exposes in the
UI, that is all the flipped variants. I do not really understand what
the flip means, so this is not implemented yet.
Furthermore this only implements the visual rotation and not the input
rotation. This means mouse movement and touch input is currently broken
on a rotated screen.
Please note that the hardware I used seems to not support the vertical
rotation. I'm not sure whether my code works. On my system it just
results in atomic commit errors and we need to go back to a previous
working state. This is not yet implemented. I need to test the vertical
rotation on my notebook, which should (in theory) support it.
Reviewers: #kwin, #plasma, subdiff, sebas
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8594
Summary:
This change hooks up the bits for changing the mode when a request to
change mode from kscreen is received. This includes:
* setting new mode in DrmOutput
* creating new buffers in SceneQPainter backend
* creating new GbmSurface in SceneOpenGL backend
Room for improvement:
* detect whether the new mode works and go back to old one if it fails
Test Plan:
Started both a QPainter/OpenGL session. Used kcmshell5 kscreen
to modify the resolution. Saw that it got applied, maximized a window to
verify it's correct. Changed back to original resolution. Verified it looked
good by maximizing a window.
Reviewers: #kwin, #plasma, subdiff, sebas
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8398
Summary:
Allows to share the implementation in a better way and is a requirement
to get the Screen implementation in the QPA plugin to be based on
KWin::Screens instead of KWayland::Output.
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8344
Summary:
In the DRM plugin the cursor is currently is drawn at the native size
given.
Therefore we don't want to scale the icon offset as that leads to it
being drawn every so slightly off-sync.
BUG: 384769
Fixed-in: 5.11.0
Test Plan:
Kate now selects lines based on the middle of the cursor, not the top left.
I'd previously gotten so used to it, I hadn't realised it was actually a bug :/
Reviewers: #plasma, graesslin
Reviewed By: #plasma, graesslin
Subscribers: plasma-devel, kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D7868
Summary:
When returning early in DrmOutput::present() because of some error KWin
didn't delete the proposed buffer, therefore not releasing the surface
lock of the GBM buffer to the EGL surface.
This patch makes sure that on any error in present we cleanup the proposed
DrmBuffer.
Reviewers: #kwin
Subscribers: #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D6660
This patch makes the AMS execution path work with the new DrmCrtc and
DrmBuffer structure and solves major issues about:
* VT switching
* DPMS
* Hot plugging
* Logout
* Memory leaks
Test Plan:
Tested with Gl and QPainter.
Reviewers: #kwin
Subscribers: kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D5191
Split off GBM based buffers to a separate file, which gets only included,
when GBM is available.
Note, that this also removes the gbmCallback, since already before this
patch we did delete the buffers always without it.
The plan is to later use this file for via GBM directly imported Wayland
buffers as well.
Test Plan:
Tested with Gl and QPainter backends.
Reviewers: #kwin
Subscribers: kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D5179
To get an image from KWin to the screen in the DRM pipeline we combine a CRTC,
an encoder and a connector. These objects are static in the sense, that they
represent real hardware on the graphics card, which doesn't change in a
session. See here for more details:
https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-kms.html
Until now we used DrmOutput as the main representation for such an active
rendering pipeline. I.e. it gets created and destroyed on hot plug events of
displays. On the other side we had no fixed representation of the static kernel
objects throughout the lifetime of KWin. This has several disadvantages:
* We always need to query all available static objects on an hot plug event.
* We can't manipulate the frame buffer of a CRTC after an output has been
disconnected
* Adding functionality for driving multiple displays on a single CRTC (i.e.
cloning) would be difficult
* We can't destroy the last frame buffer on display disconnect because the CRTC
still accesses it and have therefore a memory leak on every display disconnect
This patch solves these issues by storing representations of all available CRTC
and Connector objects in DrmBackend on init via DrmCrtc and DrmConnector
instances. On an hotplug event these vectors are looped for a fitting CRTC and
Connector combinations. Buffer handling is moved to the respective CRTC
instance. All changes in overview:
* Query all available CRTCs and Connectors and save for subsequent hotplug
events
* Fix logic errors in `queryResources()`
* Move framebuffers, buffer flip and blank logic in DrmCrtc
* Remove `restoreSaved()`. It isn't necessary and is dangerous if the old
framebuffer was deleted in the meantime. Also could reveal sensitive user
info from old session.
Test Plan:
Login, logout, VT switching, connect and disconnect external monitor, energy
saving mode.
Reviewers: #kwin
Subscribers: kwin, #kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D5118
Summary:
Cursors are drawn low level, so need to go from global compositor space
to device space
(multiplied by the out scale)
Test Plan: Elements interacted underneath where the mouse was
Reviewers: #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D3499
Test Plan:
For the first time, actually plugged in my high DPI laptop.
Tested both 1x and 2x windows on 2 real displays one high DPI, one normal
Reviewers: #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D3498
The logic on page flips was inconsistent in the sense, that it should never
release a GBM buffer before it's not used (i.e. viewable on the display)
anymore. This happened unintended until now (on page flip we never really
did something useful in the else statement, because if we're here it's not
a GBM buffer anyway).
With this patch we:
* delete on page flips always only the old buffer, which is not used anymore
* release the buffer earlier on interrupts like display disconnect in order
to be able to destroy the EGL context
Test Plan:
Tested in non atomic mode (atomic mode is obsolete right now until my other
WIP patch D4539 is ready to be merged): Login, logout, suspend, normal use.
Reviewers: #kwin, graesslin
Reviewed By: #kwin, graesslin
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D5060
Summary:
to uniquely identify screens (in QScreen::name()) add the conenctor
name and id (such as HDMI-A-1) to the model identification
Test Plan: tested a full plasma session
Reviewers: #plasma, graesslin
Reviewed By: #plasma, graesslin
Subscribers: graesslin, plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D3341
This is Milestone 1 of full support of Atomic Mode Setting (AMS) and
Universal Planes in the KWin DRM backend.
With Milestone 1 we can use the primary plane of a DRM output and do an
AMS commit (this means mode setting aswell as page flipping), if the
driver supports it. Until now the functionality is only tested on Intel
graphics. You need the drm-next kernel for most recent DRM kernel
developments. As boot option set "i915.nuclear_pageflip". Additionally
at the moment AMS is still hidden behind the environment variable
KWIN_DRM_AMS. Set it, if you want to try out AMS.
What needs to be done next: Make it possible to transfer EGL buffers
directly to planes and implement logic for deciding about using a plane
or not for a specific buffer.
You can read more about it on LWN:
https://lwn.net/Articles/653071
And on Martin's blog:
https://blog.martin-graesslin.com/blog/2015/08/layered-compositing/
I used as model previous work by Daniel Stone for Weston:
https://git.collabora.com/cgit/user/daniels/weston.git
Reviewed-by: mgraesslin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2370
Summary:
If it's not possible to create a buffer to blank the output, KWin won't
be able to render to the output. In that case the output should not be
added to the list of outputs.
To support this DrmOutput::blank and DrmOutput::init return bool to
indicate whether they succeeded. DrmBackend handles this situation and
doesn't add the output to the list of outputs if init failed.
If after init there are no outputs KWin is in a state where it won't
be functional. Thus the platform emits the initFailed signal to
terminate.
BUG: 365242
FIXED-IN: 5.7.2
Test Plan: No hardware to reproduce the condition
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2135
Summary:
When we get a configuration request, we also need to update the global
position on the DrmOutput, otherwise Wayland will know about the new
position, but KWin internally does not.
In addition we also need to trigger the changed signal on KWin::Screens,
so that internally code can react on the change.
With this change configuring layout of connected screens in KScreen
does work also in KWin.
Reviewers: #kwin, #plasma_on_wayland, sebas
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D1858
