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kwin/plugins/platforms/drm/drm_output.cpp
Roman Gilg 331f5d7da7 Get output physical size from output device 
Summary:
Get the physical size directly from the always available output device
interface instead of saving an additional copy in the abstract wayland
output class.

There is some ambiguity with orientation and naming that needs to be
cleaned up when output orientation is reworked.

Test Plan: Nested Wayland, Drm, virtual backends tested.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Maniphest Tasks: T11459

Differential Revision: https://phabricator.kde.org/D23496
2019-08-28 14:56:26 +02:00

1071 lines
34 KiB
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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "drm_output.h"
#include "drm_backend.h"
#include "drm_object_plane.h"
#include "drm_object_crtc.h"
#include "drm_object_connector.h"
#include "composite.h"
#include "logind.h"
#include "logging.h"
#include "main.h"
#include "orientation_sensor.h"
#include "screens_drm.h"
#include "wayland_server.h"
// KWayland
#include <KWayland/Server/output_interface.h>
// KF5
#include <KConfigGroup>
#include <KLocalizedString>
#include <KSharedConfig>
// Qt
#include <QMatrix4x4>
#include <QCryptographicHash>
#include <QPainter>
// c++
#include <cerrno>
// drm
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <libdrm/drm_mode.h>
namespace KWin
{
DrmOutput::DrmOutput(DrmBackend *backend)
: AbstractWaylandOutput(backend)
, m_backend(backend)
{
}
DrmOutput::~DrmOutput()
{
Q_ASSERT(!m_pageFlipPending);
if (!m_deleted) {
teardown();
}
}
void DrmOutput::teardown()
{
m_deleted = true;
hideCursor();
m_crtc->blank();
if (m_primaryPlane) {
// TODO: when having multiple planes, also clean up these
m_primaryPlane->setOutput(nullptr);
if (m_backend->deleteBufferAfterPageFlip()) {
delete m_primaryPlane->current();
}
m_primaryPlane->setCurrent(nullptr);
}
m_crtc->setOutput(nullptr);
m_conn->setOutput(nullptr);
delete m_cursor[0];
delete m_cursor[1];
if (!m_pageFlipPending) {
deleteLater();
} //else will be deleted in the page flip handler
//this is needed so that the pageflipcallback handle isn't deleted
}
void DrmOutput::releaseGbm()
{
if (DrmBuffer *b = m_crtc->current()) {
b->releaseGbm();
}
if (m_primaryPlane && m_primaryPlane->current()) {
m_primaryPlane->current()->releaseGbm();
}
}
bool DrmOutput::hideCursor()
{
return drmModeSetCursor(m_backend->fd(), m_crtc->id(), 0, 0, 0) == 0;
}
bool DrmOutput::showCursor(DrmDumbBuffer *c)
{
const QSize &s = c->size();
return drmModeSetCursor(m_backend->fd(), m_crtc->id(), c->handle(), s.width(), s.height()) == 0;
}
bool DrmOutput::showCursor()
{
const bool ret = showCursor(m_cursor[m_cursorIndex]);
if (!ret) {
return ret;
}
if (m_hasNewCursor) {
m_cursorIndex = (m_cursorIndex + 1) % 2;
m_hasNewCursor = false;
}
return ret;
}
int orientationToRotation(Qt::ScreenOrientation orientation)
{
switch (orientation) {
case Qt::PrimaryOrientation:
case Qt::LandscapeOrientation:
return 0;
case Qt::InvertedPortraitOrientation:
return 90;
case Qt::InvertedLandscapeOrientation:
return 180;
case Qt::PortraitOrientation:
return 270;
}
Q_UNREACHABLE();
return 0;
}
QMatrix4x4 DrmOutput::matrixDisplay(const QSize &s) const
{
QMatrix4x4 matrix;
const int angle = orientationToRotation(orientation());
if (angle) {
const QSize center = s / 2;
matrix.translate(center.width(), center.height());
matrix.rotate(angle, 0, 0, 1);
matrix.translate(-center.width(), -center.height());
}
matrix.scale(scale());
return matrix;
}
void DrmOutput::updateCursor()
{
QImage cursorImage = m_backend->softwareCursor();
if (cursorImage.isNull()) {
return;
}
m_hasNewCursor = true;
QImage *c = m_cursor[m_cursorIndex]->image();
c->fill(Qt::transparent);
QPainter p;
p.begin(c);
p.setWorldTransform(matrixDisplay(QSize(cursorImage.width(), cursorImage.height())).toTransform());
p.drawImage(QPoint(0, 0), cursorImage);
p.end();
}
void DrmOutput::moveCursor(const QPoint &globalPos)
{
const QMatrix4x4 hotspotMatrix = matrixDisplay(m_backend->softwareCursor().size());
QPoint p = globalPos - AbstractWaylandOutput::globalPos();
switch (orientation()) {
case Qt::PrimaryOrientation:
case Qt::LandscapeOrientation:
break;
case Qt::PortraitOrientation:
p = QPoint(p.y(), pixelSize().height() - p.x());
break;
case Qt::InvertedPortraitOrientation:
p = QPoint(pixelSize().width() - p.y(), p.x());
break;
case Qt::InvertedLandscapeOrientation:
p = QPoint(pixelSize().width() - p.x(), pixelSize().height() - p.y());
break;
}
p *= scale();
p -= hotspotMatrix.map(m_backend->softwareCursorHotspot());
drmModeMoveCursor(m_backend->fd(), m_crtc->id(), p.x(), p.y());
}
static QHash<int, QByteArray> s_connectorNames = {
{DRM_MODE_CONNECTOR_Unknown, QByteArrayLiteral("Unknown")},
{DRM_MODE_CONNECTOR_VGA, QByteArrayLiteral("VGA")},
{DRM_MODE_CONNECTOR_DVII, QByteArrayLiteral("DVI-I")},
{DRM_MODE_CONNECTOR_DVID, QByteArrayLiteral("DVI-D")},
{DRM_MODE_CONNECTOR_DVIA, QByteArrayLiteral("DVI-A")},
{DRM_MODE_CONNECTOR_Composite, QByteArrayLiteral("Composite")},
{DRM_MODE_CONNECTOR_SVIDEO, QByteArrayLiteral("SVIDEO")},
{DRM_MODE_CONNECTOR_LVDS, QByteArrayLiteral("LVDS")},
{DRM_MODE_CONNECTOR_Component, QByteArrayLiteral("Component")},
{DRM_MODE_CONNECTOR_9PinDIN, QByteArrayLiteral("DIN")},
{DRM_MODE_CONNECTOR_DisplayPort, QByteArrayLiteral("DP")},
{DRM_MODE_CONNECTOR_HDMIA, QByteArrayLiteral("HDMI-A")},
{DRM_MODE_CONNECTOR_HDMIB, QByteArrayLiteral("HDMI-B")},
{DRM_MODE_CONNECTOR_TV, QByteArrayLiteral("TV")},
{DRM_MODE_CONNECTOR_eDP, QByteArrayLiteral("eDP")},
{DRM_MODE_CONNECTOR_VIRTUAL, QByteArrayLiteral("Virtual")},
{DRM_MODE_CONNECTOR_DSI, QByteArrayLiteral("DSI")},
#ifdef DRM_MODE_CONNECTOR_DPI
{DRM_MODE_CONNECTOR_DPI, QByteArrayLiteral("DPI")},
#endif
};
namespace {
quint64 refreshRateForMode(_drmModeModeInfo *m)
{
// Calculate higher precision (mHz) refresh rate
// logic based on Weston, see compositor-drm.c
quint64 refreshRate = (m->clock * 1000000LL / m->htotal + m->vtotal / 2) / m->vtotal;
if (m->flags & DRM_MODE_FLAG_INTERLACE) {
refreshRate *= 2;
}
if (m->flags & DRM_MODE_FLAG_DBLSCAN) {
refreshRate /= 2;
}
if (m->vscan > 1) {
refreshRate /= m->vscan;
}
return refreshRate;
}
}
bool DrmOutput::init(drmModeConnector *connector)
{
initEdid(connector);
initDpms(connector);
initUuid();
if (m_backend->atomicModeSetting()) {
if (!initPrimaryPlane()) {
return false;
}
} else if (!m_crtc->blank()) {
return false;
}
setInternal(connector->connector_type == DRM_MODE_CONNECTOR_LVDS || connector->connector_type == DRM_MODE_CONNECTOR_eDP);
setDpmsSupported(true);
if (isInternal()) {
connect(kwinApp(), &Application::screensCreated, this,
[this] {
connect(screens()->orientationSensor(), &OrientationSensor::orientationChanged, this, &DrmOutput::automaticRotation);
}
);
}
initOutputDevice(connector);
setEnabled(true);
return true;
}
void DrmOutput::initUuid()
{
QCryptographicHash hash(QCryptographicHash::Md5);
hash.addData(QByteArray::number(m_conn->id()));
hash.addData(m_edid.eisaId());
hash.addData(m_edid.monitorName());
hash.addData(m_edid.serialNumber());
m_uuid = hash.result().toHex().left(10);
}
void DrmOutput::initOutputDevice(drmModeConnector *connector)
{
QString manufacturer;
if (!m_edid.eisaId().isEmpty()) {
manufacturer = QString::fromLatin1(m_edid.eisaId());
}
QString connectorName = s_connectorNames.value(connector->connector_type, QByteArrayLiteral("Unknown"));
QString modelName;
if (!m_edid.monitorName().isEmpty()) {
QString m = QString::fromLatin1(m_edid.monitorName());
if (!m_edid.serialNumber().isEmpty()) {
m.append('/');
m.append(QString::fromLatin1(m_edid.serialNumber()));
}
modelName = m;
} else if (!m_edid.serialNumber().isEmpty()) {
modelName = QString::fromLatin1(m_edid.serialNumber());
} else {
modelName = i18n("unknown");
}
const QString model = connectorName + QStringLiteral("-") + QString::number(connector->connector_type_id) + QStringLiteral("-") + modelName;
// read in mode information
QVector<KWayland::Server::OutputDeviceInterface::Mode> modes;
for (int i = 0; i < connector->count_modes; ++i) {
// TODO: in AMS here we could read and store for later every mode's blob_id
// would simplify isCurrentMode(..) and presentAtomically(..) in case of mode set
auto *m = &connector->modes[i];
KWayland::Server::OutputDeviceInterface::ModeFlags deviceflags;
if (isCurrentMode(m)) {
deviceflags |= KWayland::Server::OutputDeviceInterface::ModeFlag::Current;
}
if (m->type & DRM_MODE_TYPE_PREFERRED) {
deviceflags |= KWayland::Server::OutputDeviceInterface::ModeFlag::Preferred;
}
KWayland::Server::OutputDeviceInterface::Mode mode;
mode.id = i;
mode.size = QSize(m->hdisplay, m->vdisplay);
mode.flags = deviceflags;
mode.refreshRate = refreshRateForMode(m);
modes << mode;
}
QSize physicalSize = !m_edid.physicalSize().isEmpty() ? m_edid.physicalSize() : QSize(connector->mmWidth, connector->mmHeight);
// the size might be completely borked. E.g. Samsung SyncMaster 2494HS reports 160x90 while in truth it's 520x292
// as this information is used to calculate DPI info, it's going to result in everything being huge
const QByteArray unknown = QByteArrayLiteral("unknown");
KConfigGroup group = kwinApp()->config()->group("EdidOverwrite").group(m_edid.eisaId().isEmpty() ? unknown : m_edid.eisaId())
.group(m_edid.monitorName().isEmpty() ? unknown : m_edid.monitorName())
.group(m_edid.serialNumber().isEmpty() ? unknown : m_edid.serialNumber());
if (group.hasKey("PhysicalSize")) {
const QSize overwriteSize = group.readEntry("PhysicalSize", physicalSize);
qCWarning(KWIN_DRM) << "Overwriting monitor physical size for" << m_edid.eisaId() << "/" << m_edid.monitorName() << "/" << m_edid.serialNumber() << " from " << physicalSize << "to " << overwriteSize;
physicalSize = overwriteSize;
}
initWaylandOutputDevice(model, manufacturer, m_uuid, physicalSize, modes);
}
bool DrmOutput::isCurrentMode(const drmModeModeInfo *mode) const
{
return mode->clock == m_mode.clock
&& mode->hdisplay == m_mode.hdisplay
&& mode->hsync_start == m_mode.hsync_start
&& mode->hsync_end == m_mode.hsync_end
&& mode->htotal == m_mode.htotal
&& mode->hskew == m_mode.hskew
&& mode->vdisplay == m_mode.vdisplay
&& mode->vsync_start == m_mode.vsync_start
&& mode->vsync_end == m_mode.vsync_end
&& mode->vtotal == m_mode.vtotal
&& mode->vscan == m_mode.vscan
&& mode->vrefresh == m_mode.vrefresh
&& mode->flags == m_mode.flags
&& mode->type == m_mode.type
&& qstrcmp(mode->name, m_mode.name) == 0;
}
void DrmOutput::initEdid(drmModeConnector *connector)
{
DrmScopedPointer<drmModePropertyBlobRes> edid;
for (int i = 0; i < connector->count_props; ++i) {
DrmScopedPointer<drmModePropertyRes> property(drmModeGetProperty(m_backend->fd(), connector->props[i]));
if (!property) {
continue;
}
if ((property->flags & DRM_MODE_PROP_BLOB) && qstrcmp(property->name, "EDID") == 0) {
edid.reset(drmModeGetPropertyBlob(m_backend->fd(), connector->prop_values[i]));
}
}
if (!edid) {
return;
}
m_edid = Edid(edid->data, edid->length);
if (!m_edid.isValid()) {
qCWarning(KWIN_DRM, "Couldn't parse EDID for connector with id %d", m_conn->id());
}
}
bool DrmOutput::initPrimaryPlane()
{
for (int i = 0; i < m_backend->planes().size(); ++i) {
DrmPlane* p = m_backend->planes()[i];
if (!p) {
continue;
}
if (p->type() != DrmPlane::TypeIndex::Primary) {
continue;
}
if (p->output()) { // Plane already has an output
continue;
}
if (m_primaryPlane) { // Output already has a primary plane
continue;
}
if (!p->isCrtcSupported(m_crtc->resIndex())) {
continue;
}
p->setOutput(this);
m_primaryPlane = p;
qCDebug(KWIN_DRM) << "Initialized primary plane" << p->id() << "on CRTC" << m_crtc->id();
return true;
}
qCCritical(KWIN_DRM) << "Failed to initialize primary plane.";
return false;
}
bool DrmOutput::initCursorPlane() // TODO: Add call in init (but needs layer support in general first)
{
for (int i = 0; i < m_backend->planes().size(); ++i) {
DrmPlane* p = m_backend->planes()[i];
if (!p) {
continue;
}
if (p->type() != DrmPlane::TypeIndex::Cursor) {
continue;
}
if (p->output()) { // Plane already has an output
continue;
}
if (m_cursorPlane) { // Output already has a cursor plane
continue;
}
if (!p->isCrtcSupported(m_crtc->resIndex())) {
continue;
}
p->setOutput(this);
m_cursorPlane = p;
qCDebug(KWIN_DRM) << "Initialized cursor plane" << p->id() << "on CRTC" << m_crtc->id();
return true;
}
return false;
}
bool DrmOutput::initCursor(const QSize &cursorSize)
{
auto createCursor = [this, cursorSize] (int index) {
m_cursor[index] = m_backend->createBuffer(cursorSize);
if (!m_cursor[index]->map(QImage::Format_ARGB32_Premultiplied)) {
return false;
}
return true;
};
if (!createCursor(0) || !createCursor(1)) {
return false;
}
return true;
}
void DrmOutput::initDpms(drmModeConnector *connector)
{
for (int i = 0; i < connector->count_props; ++i) {
DrmScopedPointer<drmModePropertyRes> property(drmModeGetProperty(m_backend->fd(), connector->props[i]));
if (!property) {
continue;
}
if (qstrcmp(property->name, "DPMS") == 0) {
m_dpms.swap(property);
break;
}
}
}
static DrmOutput::DpmsMode fromWaylandDpmsMode(KWayland::Server::OutputInterface::DpmsMode wlMode)
{
using namespace KWayland::Server;
switch (wlMode) {
case OutputInterface::DpmsMode::On:
return DrmOutput::DpmsMode::On;
case OutputInterface::DpmsMode::Standby:
return DrmOutput::DpmsMode::Standby;
case OutputInterface::DpmsMode::Suspend:
return DrmOutput::DpmsMode::Suspend;
case OutputInterface::DpmsMode::Off:
return DrmOutput::DpmsMode::Off;
default:
Q_UNREACHABLE();
}
}
static KWayland::Server::OutputInterface::DpmsMode toWaylandDpmsMode(DrmOutput::DpmsMode mode)
{
using namespace KWayland::Server;
switch (mode) {
case DrmOutput::DpmsMode::On:
return OutputInterface::DpmsMode::On;
case DrmOutput::DpmsMode::Standby:
return OutputInterface::DpmsMode::Standby;
case DrmOutput::DpmsMode::Suspend:
return OutputInterface::DpmsMode::Suspend;
case DrmOutput::DpmsMode::Off:
return OutputInterface::DpmsMode::Off;
default:
Q_UNREACHABLE();
}
}
void DrmOutput::updateDpms(KWayland::Server::OutputInterface::DpmsMode mode)
{
if (m_dpms.isNull()) {
return;
}
const auto drmMode = fromWaylandDpmsMode(mode);
if (drmMode == m_dpmsModePending) {
qCDebug(KWIN_DRM) << "New DPMS mode equals old mode. DPMS unchanged.";
return;
}
m_dpmsModePending = drmMode;
if (m_backend->atomicModeSetting()) {
m_modesetRequested = true;
if (drmMode == DpmsMode::On) {
if (m_pageFlipPending) {
m_pageFlipPending = false;
Compositor::self()->bufferSwapComplete();
}
dpmsOnHandler();
} else {
m_dpmsAtomicOffPending = true;
if (!m_pageFlipPending) {
dpmsAtomicOff();
}
}
} else {
if (drmModeConnectorSetProperty(m_backend->fd(), m_conn->id(), m_dpms->prop_id, uint64_t(drmMode)) < 0) {
m_dpmsModePending = m_dpmsMode;
qCWarning(KWIN_DRM) << "Setting DPMS failed";
return;
}
if (drmMode == DpmsMode::On) {
dpmsOnHandler();
} else {
dpmsOffHandler();
}
m_dpmsMode = m_dpmsModePending;
}
}
void DrmOutput::dpmsOnHandler()
{
qCDebug(KWIN_DRM) << "DPMS mode set for output" << m_crtc->id() << "to On.";
auto wlOutput = waylandOutput();
if (wlOutput) {
wlOutput->setDpmsMode(toWaylandDpmsMode(m_dpmsModePending));
}
emit dpmsChanged();
m_backend->checkOutputsAreOn();
if (!m_backend->atomicModeSetting()) {
m_crtc->blank();
}
if (Compositor *compositor = Compositor::self()) {
compositor->addRepaintFull();
}
}
void DrmOutput::dpmsOffHandler()
{
qCDebug(KWIN_DRM) << "DPMS mode set for output" << m_crtc->id() << "to Off.";
auto wlOutput = waylandOutput();
if (wlOutput) {
wlOutput->setDpmsMode(toWaylandDpmsMode(m_dpmsModePending));
}
emit dpmsChanged();
m_backend->outputWentOff();
}
void DrmOutput::transform(KWayland::Server::OutputDeviceInterface::Transform transform)
{
waylandOutputDevice()->setTransform(transform);
using KWayland::Server::OutputDeviceInterface;
using KWayland::Server::OutputInterface;
auto wlOutput = waylandOutput();
switch (transform) {
case OutputDeviceInterface::Transform::Normal:
if (m_primaryPlane) {
m_primaryPlane->setTransformation(DrmPlane::Transformation::Rotate0);
}
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Normal);
}
setOrientation(Qt::PrimaryOrientation);
break;
case OutputDeviceInterface::Transform::Rotated90:
if (m_primaryPlane) {
m_primaryPlane->setTransformation(DrmPlane::Transformation::Rotate90);
}
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Rotated90);
}
setOrientation(Qt::PortraitOrientation);
break;
case OutputDeviceInterface::Transform::Rotated180:
if (m_primaryPlane) {
m_primaryPlane->setTransformation(DrmPlane::Transformation::Rotate180);
}
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Rotated180);
}
setOrientation(Qt::InvertedLandscapeOrientation);
break;
case OutputDeviceInterface::Transform::Rotated270:
if (m_primaryPlane) {
m_primaryPlane->setTransformation(DrmPlane::Transformation::Rotate270);
}
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Rotated270);
}
setOrientation(Qt::InvertedPortraitOrientation);
break;
case OutputDeviceInterface::Transform::Flipped:
// TODO: what is this exactly?
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Flipped);
}
break;
case OutputDeviceInterface::Transform::Flipped90:
// TODO: what is this exactly?
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Flipped90);
}
break;
case OutputDeviceInterface::Transform::Flipped180:
// TODO: what is this exactly?
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Flipped180);
}
break;
case OutputDeviceInterface::Transform::Flipped270:
// TODO: what is this exactly?
if (wlOutput) {
wlOutput->setTransform(OutputInterface::Transform::Flipped270);
}
break;
}
m_modesetRequested = true;
// the cursor might need to get rotated
updateCursor();
showCursor();
// TODO: are these calls not enough in updateMode already?
setWaylandMode();
}
void DrmOutput::updateMode(int modeIndex)
{
// get all modes on the connector
DrmScopedPointer<drmModeConnector> connector(drmModeGetConnector(m_backend->fd(), m_conn->id()));
if (connector->count_modes <= modeIndex) {
// TODO: error?
return;
}
if (isCurrentMode(&connector->modes[modeIndex])) {
// nothing to do
return;
}
m_mode = connector->modes[modeIndex];
m_modesetRequested = true;
setWaylandMode();
}
void DrmOutput::setWaylandMode()
{
AbstractWaylandOutput::setWaylandMode(QSize(m_mode.hdisplay, m_mode.vdisplay),
refreshRateForMode(&m_mode));
}
void DrmOutput::pageFlipped()
{
m_pageFlipPending = false;
if (m_deleted) {
deleteLater();
return;
}
if (!m_crtc) {
return;
}
// Egl based surface buffers get destroyed, QPainter based dumb buffers not
// TODO: split up DrmOutput in two for dumb and egl/gbm surface buffer compatible subclasses completely?
if (m_backend->deleteBufferAfterPageFlip()) {
if (m_backend->atomicModeSetting()) {
if (!m_primaryPlane->next()) {
// on manual vt switch
// TODO: when we later use overlay planes it might happen, that we have a page flip with only
// damage on one of these, and therefore the primary plane has no next buffer
// -> Then we don't want to return here!
if (m_primaryPlane->current()) {
m_primaryPlane->current()->releaseGbm();
}
return;
}
for (DrmPlane *p : m_nextPlanesFlipList) {
p->flipBufferWithDelete();
}
m_nextPlanesFlipList.clear();
} else {
if (!m_crtc->next()) {
// on manual vt switch
if (DrmBuffer *b = m_crtc->current()) {
b->releaseGbm();
}
}
m_crtc->flipBuffer();
}
} else {
if (m_backend->atomicModeSetting()){
for (DrmPlane *p : m_nextPlanesFlipList) {
p->flipBuffer();
}
m_nextPlanesFlipList.clear();
} else {
m_crtc->flipBuffer();
}
m_crtc->flipBuffer();
}
}
bool DrmOutput::present(DrmBuffer *buffer)
{
if (m_backend->atomicModeSetting()) {
return presentAtomically(buffer);
} else {
return presentLegacy(buffer);
}
}
bool DrmOutput::dpmsAtomicOff()
{
m_dpmsAtomicOffPending = false;
// TODO: With multiple planes: deactivate all of them here
delete m_primaryPlane->next();
m_primaryPlane->setNext(nullptr);
m_nextPlanesFlipList << m_primaryPlane;
if (!doAtomicCommit(AtomicCommitMode::Test)) {
qCDebug(KWIN_DRM) << "Atomic test commit to Dpms Off failed. Aborting.";
return false;
}
if (!doAtomicCommit(AtomicCommitMode::Real)) {
qCDebug(KWIN_DRM) << "Atomic commit to Dpms Off failed. This should have never happened! Aborting.";
return false;
}
m_nextPlanesFlipList.clear();
dpmsOffHandler();
return true;
}
bool DrmOutput::presentAtomically(DrmBuffer *buffer)
{
if (!LogindIntegration::self()->isActiveSession()) {
qCWarning(KWIN_DRM) << "Logind session not active.";
return false;
}
if (m_pageFlipPending) {
qCWarning(KWIN_DRM) << "Page not yet flipped.";
return false;
}
#if HAVE_EGL_STREAMS
if (m_backend->useEglStreams() && !m_modesetRequested) {
// EglStreamBackend queues normal page flips through EGL,
// modesets are still performed through DRM-KMS
m_pageFlipPending = true;
return true;
}
#endif
m_primaryPlane->setNext(buffer);
m_nextPlanesFlipList << m_primaryPlane;
if (!doAtomicCommit(AtomicCommitMode::Test)) {
//TODO: When we use planes for layered rendering, fallback to renderer instead. Also for direct scanout?
//TODO: Probably should undo setNext and reset the flip list
qCDebug(KWIN_DRM) << "Atomic test commit failed. Aborting present.";
// go back to previous state
if (m_lastWorkingState.valid) {
m_mode = m_lastWorkingState.mode;
setOrientation(m_lastWorkingState.orientation);
setGlobalPos(m_lastWorkingState.globalPos);
if (m_primaryPlane) {
m_primaryPlane->setTransformation(m_lastWorkingState.planeTransformations);
}
m_modesetRequested = true;
// the cursor might need to get rotated
updateCursor();
showCursor();
// TODO: forward to OutputInterface and OutputDeviceInterface
setWaylandMode();
emit screens()->changed();
}
return false;
}
const bool wasModeset = m_modesetRequested;
if (!doAtomicCommit(AtomicCommitMode::Real)) {
qCDebug(KWIN_DRM) << "Atomic commit failed. This should have never happened! Aborting present.";
//TODO: Probably should undo setNext and reset the flip list
return false;
}
if (wasModeset) {
// store current mode set as new good state
m_lastWorkingState.mode = m_mode;
m_lastWorkingState.orientation = orientation();
m_lastWorkingState.globalPos = globalPos();
if (m_primaryPlane) {
m_lastWorkingState.planeTransformations = m_primaryPlane->transformation();
}
m_lastWorkingState.valid = true;
}
m_pageFlipPending = true;
return true;
}
bool DrmOutput::presentLegacy(DrmBuffer *buffer)
{
if (m_crtc->next()) {
return false;
}
if (!LogindIntegration::self()->isActiveSession()) {
m_crtc->setNext(buffer);
return false;
}
if (m_dpmsMode != DpmsMode::On) {
return false;
}
// Do we need to set a new mode first?
if (!m_crtc->current() || m_crtc->current()->needsModeChange(buffer)) {
if (!setModeLegacy(buffer)) {
return false;
}
}
const bool ok = drmModePageFlip(m_backend->fd(), m_crtc->id(), buffer->bufferId(), DRM_MODE_PAGE_FLIP_EVENT, this) == 0;
if (ok) {
m_crtc->setNext(buffer);
} else {
qCWarning(KWIN_DRM) << "Page flip failed:" << strerror(errno);
}
return ok;
}
bool DrmOutput::setModeLegacy(DrmBuffer *buffer)
{
uint32_t connId = m_conn->id();
if (drmModeSetCrtc(m_backend->fd(), m_crtc->id(), buffer->bufferId(), 0, 0, &connId, 1, &m_mode) == 0) {
return true;
} else {
qCWarning(KWIN_DRM) << "Mode setting failed";
return false;
}
}
bool DrmOutput::doAtomicCommit(AtomicCommitMode mode)
{
drmModeAtomicReq *req = drmModeAtomicAlloc();
auto errorHandler = [this, mode, req] () {
if (mode == AtomicCommitMode::Test) {
// TODO: when we later test overlay planes, make sure we change only the right stuff back
}
if (req) {
drmModeAtomicFree(req);
}
if (m_dpmsMode != m_dpmsModePending) {
qCWarning(KWIN_DRM) << "Setting DPMS failed";
m_dpmsModePending = m_dpmsMode;
if (m_dpmsMode != DpmsMode::On) {
dpmsOffHandler();
}
}
// TODO: see above, rework later for overlay planes!
for (DrmPlane *p : m_nextPlanesFlipList) {
p->setNext(nullptr);
}
m_nextPlanesFlipList.clear();
};
if (!req) {
qCWarning(KWIN_DRM) << "DRM: couldn't allocate atomic request";
errorHandler();
return false;
}
uint32_t flags = 0;
// Do we need to set a new mode?
if (m_modesetRequested) {
if (m_dpmsModePending == DpmsMode::On) {
if (drmModeCreatePropertyBlob(m_backend->fd(), &m_mode, sizeof(m_mode), &m_blobId) != 0) {
qCWarning(KWIN_DRM) << "Failed to create property blob";
errorHandler();
return false;
}
}
if (!atomicReqModesetPopulate(req, m_dpmsModePending == DpmsMode::On)){
qCWarning(KWIN_DRM) << "Failed to populate Atomic Modeset";
errorHandler();
return false;
}
flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
}
if (mode == AtomicCommitMode::Real) {
if (m_dpmsModePending == DpmsMode::On) {
if (!(flags & DRM_MODE_ATOMIC_ALLOW_MODESET)) {
// TODO: Evaluating this condition should only be necessary, as long as we expect older kernels than 4.10.
flags |= DRM_MODE_ATOMIC_NONBLOCK;
}
#if HAVE_EGL_STREAMS
if (!m_backend->useEglStreams())
// EglStreamBackend uses the NV_output_drm_flip_event EGL extension
// to register the flip event through eglStreamConsumerAcquireAttribNV
#endif
flags |= DRM_MODE_PAGE_FLIP_EVENT;
}
} else {
flags |= DRM_MODE_ATOMIC_TEST_ONLY;
}
bool ret = true;
// TODO: Make sure when we use more than one plane at a time, that we go through this list in the right order.
for (int i = m_nextPlanesFlipList.size() - 1; 0 <= i; i-- ) {
DrmPlane *p = m_nextPlanesFlipList[i];
ret &= p->atomicPopulate(req);
}
if (!ret) {
qCWarning(KWIN_DRM) << "Failed to populate atomic planes. Abort atomic commit!";
errorHandler();
return false;
}
if (drmModeAtomicCommit(m_backend->fd(), req, flags, this)) {
qCWarning(KWIN_DRM) << "Atomic request failed to commit:" << strerror(errno);
errorHandler();
return false;
}
if (mode == AtomicCommitMode::Real && (flags & DRM_MODE_ATOMIC_ALLOW_MODESET)) {
qCDebug(KWIN_DRM) << "Atomic Modeset successful.";
m_modesetRequested = false;
m_dpmsMode = m_dpmsModePending;
}
drmModeAtomicFree(req);
return true;
}
bool DrmOutput::atomicReqModesetPopulate(drmModeAtomicReq *req, bool enable)
{
if (enable) {
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcX), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcY), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcW), m_mode.hdisplay << 16);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcH), m_mode.vdisplay << 16);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcW), m_mode.hdisplay);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcH), m_mode.vdisplay);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcId), m_crtc->id());
} else {
if (m_backend->deleteBufferAfterPageFlip()) {
delete m_primaryPlane->current();
delete m_primaryPlane->next();
}
m_primaryPlane->setCurrent(nullptr);
m_primaryPlane->setNext(nullptr);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcX), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcY), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcW), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcH), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcW), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcH), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcId), 0);
}
m_conn->setValue(int(DrmConnector::PropertyIndex::CrtcId), enable ? m_crtc->id() : 0);
m_crtc->setValue(int(DrmCrtc::PropertyIndex::ModeId), enable ? m_blobId : 0);
m_crtc->setValue(int(DrmCrtc::PropertyIndex::Active), enable);
bool ret = true;
ret &= m_conn->atomicPopulate(req);
ret &= m_crtc->atomicPopulate(req);
return ret;
}
bool DrmOutput::supportsTransformations() const
{
if (!m_primaryPlane) {
return false;
}
const auto transformations = m_primaryPlane->supportedTransformations();
return transformations.testFlag(DrmPlane::Transformation::Rotate90)
|| transformations.testFlag(DrmPlane::Transformation::Rotate180)
|| transformations.testFlag(DrmPlane::Transformation::Rotate270);
}
void DrmOutput::automaticRotation()
{
if (!m_primaryPlane) {
return;
}
const auto supportedTransformations = m_primaryPlane->supportedTransformations();
const auto requestedTransformation = screens()->orientationSensor()->orientation();
using KWayland::Server::OutputDeviceInterface;
OutputDeviceInterface::Transform newTransformation = OutputDeviceInterface::Transform::Normal;
switch (requestedTransformation) {
case OrientationSensor::Orientation::TopUp:
newTransformation = OutputDeviceInterface::Transform::Normal;
break;
case OrientationSensor::Orientation::TopDown:
if (!supportedTransformations.testFlag(DrmPlane::Transformation::Rotate180)) {
return;
}
newTransformation = OutputDeviceInterface::Transform::Rotated180;
break;
case OrientationSensor::Orientation::LeftUp:
if (!supportedTransformations.testFlag(DrmPlane::Transformation::Rotate90)) {
return;
}
newTransformation = OutputDeviceInterface::Transform::Rotated90;
break;
case OrientationSensor::Orientation::RightUp:
if (!supportedTransformations.testFlag(DrmPlane::Transformation::Rotate270)) {
return;
}
newTransformation = OutputDeviceInterface::Transform::Rotated270;
break;
case OrientationSensor::Orientation::FaceUp:
case OrientationSensor::Orientation::FaceDown:
case OrientationSensor::Orientation::Undefined:
// unsupported
return;
}
transform(newTransformation);
emit screens()->changed();
}
int DrmOutput::gammaRampSize() const
{
return m_crtc->gammaRampSize();
}
bool DrmOutput::setGammaRamp(const GammaRamp &gamma)
{
return m_crtc->setGammaRamp(gamma);
}
}
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