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kwin/plugins/platforms/drm/drm_output.cpp

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/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#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 "cursor.h"
#include "logind.h"
#include "logging.h"
#include "main.h"
#include "screens_drm.h"
#include "wayland_server.h"
// KWayland
#include <KWaylandServer/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);
teardown();
}
void DrmOutput::teardown()
{
if (m_deleted) {
return;
}
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);
}
if (m_cursorPlane) {
m_cursorPlane->setOutput(nullptr);
}
m_crtc->setOutput(nullptr);
m_conn->setOutput(nullptr);
m_cursor[0].reset(nullptr);
m_cursor[1].reset(nullptr);
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()
{
if (m_deleted) {
return false;
}
if (Q_UNLIKELY(m_backend->usesSoftwareCursor())) {
qCCritical(KWIN_DRM) << "DrmOutput::showCursor should never be called when software cursor is enabled";
return true;
}
const bool ret = showCursor(m_cursor[m_cursorIndex].data());
if (!ret) {
return ret;
}
if (m_hasNewCursor) {
m_cursorIndex = (m_cursorIndex + 1) % 2;
m_hasNewCursor = false;
}
return ret;
}
// TODO: Do we need to handle the flipped cases differently?
int transformToRotation(DrmOutput::Transform transform)
{
switch (transform) {
case DrmOutput::Transform::Normal:
case DrmOutput::Transform::Flipped:
return 0;
case DrmOutput::Transform::Rotated90:
case DrmOutput::Transform::Flipped90:
return 90;
case DrmOutput::Transform::Rotated180:
case DrmOutput::Transform::Flipped180:
return 180;
case DrmOutput::Transform::Rotated270:
case DrmOutput::Transform::Flipped270:
return 270;
}
Q_UNREACHABLE();
return 0;
}
QMatrix4x4 DrmOutput::matrixDisplay(const QSize &s) const
{
QMatrix4x4 matrix;
const int angle = transformToRotation(transform());
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()
{
if (m_deleted) {
return;
}
QImage cursorImage = Cursors::self()->currentCursor()->image();
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(Cursor* cursor, const QPoint &globalPos)
{
const QMatrix4x4 hotspotMatrix = matrixDisplay(cursor->image().size());
const QPoint localPos = globalPos - AbstractWaylandOutput::globalPos();
QPoint pos = localPos;
// TODO: Do we need to handle the flipped cases differently?
switch (transform()) {
case Transform::Normal:
case Transform::Flipped:
break;
case Transform::Rotated90:
case Transform::Flipped90:
pos = QPoint(localPos.y(), pixelSize().width() / scale() - localPos.x());
break;
case Transform::Rotated270:
case Transform::Flipped270:
pos = QPoint(pixelSize().height() / scale() - localPos.y(), localPos.x());
break;
case Transform::Rotated180:
case Transform::Flipped180:
pos = QPoint(pixelSize().width() / scale() - localPos.x(),
pixelSize().height() / scale() - localPos.y());
break;
default:
Q_UNREACHABLE();
}
pos *= scale();
pos -= hotspotMatrix.map(cursor->hotspot());
drmModeMoveCursor(m_backend->fd(), m_crtc->id(), pos.x(), pos.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;
}
}
setInternal(connector->connector_type == DRM_MODE_CONNECTOR_LVDS || connector->connector_type == DRM_MODE_CONNECTOR_eDP
|| connector->connector_type == DRM_MODE_CONNECTOR_DSI);
setDpmsSupported(true);
initOutputDevice(connector);
if (!m_backend->atomicModeSetting() && !m_crtc->blank()) {
// We use legacy mode and the initial output blank failed.
return false;
}
updateDpms(KWaylandServer::OutputInterface::DpmsMode::On);
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.vendor().isEmpty()) {
manufacturer = QString::fromLatin1(m_edid.vendor());
} else if (!m_edid.eisaId().isEmpty()) {
manufacturer = QString::fromLatin1(m_edid.eisaId());
}
QString connectorName = s_connectorNames.value(connector->connector_type, QByteArrayLiteral("Unknown")) + QStringLiteral("-") + QString::number(connector->connector_type_id);
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("-") + modelName;
// read in mode information
QVector<KWaylandServer::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];
KWaylandServer::OutputDeviceInterface::ModeFlags deviceflags;
if (isCurrentMode(m)) {
deviceflags |= KWaylandServer::OutputDeviceInterface::ModeFlag::Current;
}
if (m->type & DRM_MODE_TYPE_PREFERRED) {
deviceflags |= KWaylandServer::OutputDeviceInterface::ModeFlag::Preferred;
}
KWaylandServer::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;
}
setName(connectorName);
initInterfaces(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].reset(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;
}
}
}
void DrmOutput::updateEnablement(bool enable)
{
if (enable) {
m_dpmsModePending = DpmsMode::On;
if (m_backend->atomicModeSetting()) {
atomicEnable();
} else {
if (dpmsLegacyApply()) {
m_backend->enableOutput(this, true);
}
}
} else {
m_dpmsModePending = DpmsMode::Off;
if (m_backend->atomicModeSetting()) {
atomicDisable();
} else {
if (dpmsLegacyApply()) {
m_backend->enableOutput(this, false);
}
}
}
}
void DrmOutput::atomicEnable()
{
m_modesetRequested = true;
if (m_atomicOffPending) {
Q_ASSERT(m_pageFlipPending);
m_atomicOffPending = false;
}
m_backend->enableOutput(this, true);
if (Compositor *compositor = Compositor::self()) {
compositor->addRepaintFull();
}
}
void DrmOutput::atomicDisable()
{
m_modesetRequested = true;
m_backend->enableOutput(this, false);
m_atomicOffPending = true;
if (!m_pageFlipPending) {
dpmsAtomicOff();
}
}
static DrmOutput::DpmsMode fromWaylandDpmsMode(KWaylandServer::OutputInterface::DpmsMode wlMode)
{
using namespace KWaylandServer;
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 KWaylandServer::OutputInterface::DpmsMode toWaylandDpmsMode(DrmOutput::DpmsMode mode)
{
using namespace KWaylandServer;
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(KWaylandServer::OutputInterface::DpmsMode mode)
{
if (m_dpms.isNull() || !isEnabled()) {
return;
}
const auto drmMode = fromWaylandDpmsMode(mode);
if (drmMode == m_dpmsModePending) {
qCDebug(KWIN_DRM) << "New DPMS mode equals old mode. DPMS unchanged.";
waylandOutput()->setDpmsMode(mode);
return;
}
m_dpmsModePending = drmMode;
if (m_backend->atomicModeSetting()) {
m_modesetRequested = true;
if (drmMode == DpmsMode::On) {
if (m_atomicOffPending) {
Q_ASSERT(m_pageFlipPending);
m_atomicOffPending = false;
}
dpmsFinishOn();
} else {
m_atomicOffPending = true;
if (!m_pageFlipPending) {
dpmsAtomicOff();
}
}
} else {
dpmsLegacyApply();
}
}
void DrmOutput::dpmsFinishOn()
{
qCDebug(KWIN_DRM) << "DPMS mode set for output" << m_crtc->id() << "to On.";
waylandOutput()->setDpmsMode(toWaylandDpmsMode(DpmsMode::On));
m_backend->checkOutputsAreOn();
if (!m_backend->atomicModeSetting()) {
m_crtc->blank();
}
if (Compositor *compositor = Compositor::self()) {
compositor->addRepaintFull();
}
}
void DrmOutput::dpmsFinishOff()
{
qCDebug(KWIN_DRM) << "DPMS mode set for output" << m_crtc->id() << "to Off.";
if (isEnabled()) {
waylandOutput()->setDpmsMode(toWaylandDpmsMode(m_dpmsModePending));
m_backend->createDpmsFilter();
} else {
waylandOutput()->setDpmsMode(toWaylandDpmsMode(DpmsMode::Off));
}
}
bool DrmOutput::dpmsLegacyApply()
{
if (drmModeConnectorSetProperty(m_backend->fd(), m_conn->id(),
m_dpms->prop_id, uint64_t(m_dpmsModePending)) < 0) {
m_dpmsModePending = m_dpmsMode;
qCWarning(KWIN_DRM) << "Setting DPMS failed";
return false;
}
if (m_dpmsModePending == DpmsMode::On) {
dpmsFinishOn();
} else {
dpmsFinishOff();
}
m_dpmsMode = m_dpmsModePending;
return true;
}
DrmPlane::Transformations outputToPlaneTransform(DrmOutput::Transform transform)
{
using OutTrans = DrmOutput::Transform;
using PlaneTrans = DrmPlane::Transformation;
// TODO: Do we want to support reflections (flips)?
switch (transform) {
case OutTrans::Normal:
case OutTrans::Flipped:
return PlaneTrans::Rotate0;
case OutTrans::Rotated90:
case OutTrans::Flipped90:
return PlaneTrans::Rotate90;
case OutTrans::Rotated180:
case OutTrans::Flipped180:
return PlaneTrans::Rotate180;
case OutTrans::Rotated270:
case OutTrans::Flipped270:
return PlaneTrans::Rotate270;
default:
Q_UNREACHABLE();
}
}
bool DrmOutput::hardwareTransforms() const
{
if (!m_primaryPlane) {
return false;
}
return m_primaryPlane->transformation() == outputToPlaneTransform(transform());
}
int DrmOutput::rotation() const
{
return transformToRotation(transform());
}
void DrmOutput::updateTransform(Transform transform)
{
const auto planeTransform = outputToPlaneTransform(transform);
if (m_primaryPlane) {
// At the moment we have to exclude hardware transforms for vertical buffers.
// For that we need to support other buffers and graceful fallback from atomic tests.
// Reason is that standard linear buffers are not suitable.
const bool isPortrait = transform == Transform::Rotated90
|| transform == Transform::Flipped90
|| transform == Transform::Rotated270
|| transform == Transform::Flipped270;
if (!qEnvironmentVariableIsSet("KWIN_DRM_SW_ROTATIONS_ONLY") &&
(m_primaryPlane->supportedTransformations() & planeTransform) &&
!isPortrait) {
m_primaryPlane->setTransformation(planeTransform);
} else {
m_primaryPlane->setTransformation(DrmPlane::Transformation::Rotate0);
}
}
m_modesetRequested = true;
// show cursor only if is enabled, i.e if pointer device is presentP
if (m_backend->isCursorEnabled() && !m_backend->usesSoftwareCursor()) {
// the cursor might need to get rotated
updateCursor();
showCursor();
}
}
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()
{
// In legacy mode we might get a page flip through a blank.
Q_ASSERT(m_pageFlipPending || !m_backend->atomicModeSetting());
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();
}
if (m_atomicOffPending) {
dpmsAtomicOff();
}
}
bool DrmOutput::present(DrmBuffer *buffer)
{
if (m_dpmsModePending != DpmsMode::On) {
return false;
}
if (m_backend->atomicModeSetting()) {
return presentAtomically(buffer);
} else {
return presentLegacy(buffer);
}
}
bool DrmOutput::dpmsAtomicOff()
{
m_atomicOffPending = 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();
dpmsFinishOff();
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;
setTransform(m_lastWorkingState.transform);
setGlobalPos(m_lastWorkingState.globalPos);
if (m_primaryPlane) {
m_primaryPlane->setTransformation(m_lastWorkingState.planeTransformations);
}
m_modesetRequested = true;
if (m_backend->isCursorEnabled()) {
// 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.transform = transform();
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;
}
// 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) {
dpmsFinishOff();
}
}
// 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) {
const QSize mSize = modeSize();
const QSize sourceSize = hardwareTransforms() ? pixelSize() : mSize;
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcX), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcY), 0);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcW), sourceSize.width() << 16);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::SrcH), sourceSize.height() << 16);
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcW), mSize.width());
m_primaryPlane->setValue(int(DrmPlane::PropertyIndex::CrtcH), mSize.height());
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);
}
int DrmOutput::gammaRampSize() const
{
return m_crtc->gammaRampSize();
}
bool DrmOutput::setGammaRamp(const GammaRamp &gamma)
{
return m_crtc->setGammaRamp(gamma);
}
}
QDebug& operator<<(QDebug& s, const KWin::DrmOutput* output)
{
if (!output)
return s.nospace() << "DrmOutput()";
return s.nospace() << "DrmOutput(" << output->name() << ", crtc:" << output->crtc() << ", connector:" << output->connector() << ", geometry:" << output->geometry() << ')';
}