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kwin/plugins/platforms/drm/drm_output.cpp
David Edmundson add93b3e36 drm cursor scaling 
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
2017-03-29 20:53:22 +01:00

944 lines
31 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 <errno.h>
#include "composite.h"
#include "logind.h"
#include "logging.h"
#include "main.h"
#include "screens_drm.h"
#include "wayland_server.h"
// KWayland
#include <KWayland/Server/display.h>
#include <KWayland/Server/output_interface.h>
#include <KWayland/Server/outputchangeset.h>
#include <KWayland/Server/outputdevice_interface.h>
#include <KWayland/Server/outputmanagement_interface.h>
#include <KWayland/Server/outputconfiguration_interface.h>
// KF5
#include <KConfigGroup>
#include <KLocalizedString>
#include <KSharedConfig>
// Qt
#include <QCryptographicHash>
// drm
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <libdrm/drm_mode.h>
namespace KWin
{
DrmOutput::DrmOutput(DrmBackend *backend)
: QObject()
, m_backend(backend)
{
}
DrmOutput::~DrmOutput()
{
hideCursor();
cleanupBlackBuffer();
delete m_crtc;
delete m_conn;
delete m_waylandOutput.data();
delete m_waylandOutputDevice.data();
}
void DrmOutput::cleanup()
{
if (m_currentBuffer) {
m_currentBuffer->releaseGbm();
}
if (m_nextBuffer) {
m_nextBuffer->releaseGbm();
}
if (m_primaryPlane) {
if (m_primaryPlane->current()) {
m_primaryPlane->current()->releaseGbm();
}
if (m_primaryPlane->next()) {
m_primaryPlane->next()->releaseGbm();
}
}
}
void DrmOutput::hideCursor()
{
drmModeSetCursor(m_backend->fd(), m_crtcId, 0, 0, 0);
}
void DrmOutput::restoreSaved()
{
if (!m_savedCrtc.isNull()) {
drmModeSetCrtc(m_backend->fd(), m_savedCrtc->crtc_id, m_savedCrtc->buffer_id,
m_savedCrtc->x, m_savedCrtc->y, &m_connector, 1, &m_savedCrtc->mode);
}
}
void DrmOutput::showCursor(DrmBuffer *c)
{
const QSize &s = c->size();
drmModeSetCursor(m_backend->fd(), m_crtcId, c->handle(), s.width(), s.height());
}
void DrmOutput::moveCursor(const QPoint &globalPos)
{
const QPoint p = (globalPos - m_globalPos) * m_scale;
drmModeMoveCursor(m_backend->fd(), m_crtcId, p.x(), p.y());
}
QSize DrmOutput::pixelSize() const
{
return QSize(m_mode.hdisplay, m_mode.vdisplay);
}
QRect DrmOutput::geometry() const
{
return QRect(m_globalPos, pixelSize() / scale());
}
qreal DrmOutput::scale() const
{
return m_scale;
}
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();
}
}
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 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")}
};
bool DrmOutput::init(drmModeConnector *connector)
{
initEdid(connector);
initDpms(connector);
initUuid();
if (m_backend->atomicModeSetting()) {
if (!initPrimaryPlane()) {
return false;
}
}
m_savedCrtc.reset(drmModeGetCrtc(m_backend->fd(), m_crtcId));
if (!blank()) {
return false;
}
setDpms(DpmsMode::On);
if (!m_waylandOutput.isNull()) {
delete m_waylandOutput.data();
m_waylandOutput.clear();
}
m_waylandOutput = waylandServer()->display()->createOutput();
if (!m_waylandOutputDevice.isNull()) {
delete m_waylandOutputDevice.data();
m_waylandOutputDevice.clear();
}
m_waylandOutputDevice = waylandServer()->display()->createOutputDevice();
m_waylandOutputDevice->setUuid(m_uuid);
if (!m_edid.eisaId.isEmpty()) {
m_waylandOutput->setManufacturer(QString::fromLatin1(m_edid.eisaId));
} else {
m_waylandOutput->setManufacturer(i18n("unknown"));
}
m_waylandOutputDevice->setManufacturer(m_waylandOutput->manufacturer());
QString connectorName = s_connectorNames.value(connector->connector_type, QByteArrayLiteral("Unknown"));
QString modelName;
if (!m_edid.monitorName.isEmpty()) {
QString model = QString::fromLatin1(m_edid.monitorName);
if (!m_edid.serialNumber.isEmpty()) {
model.append('/');
model.append(QString::fromLatin1(m_edid.serialNumber));
}
modelName = model;
} else if (!m_edid.serialNumber.isEmpty()) {
modelName = QString::fromLatin1(m_edid.serialNumber);
} else {
modelName = i18n("unknown");
}
m_waylandOutput->setModel(connectorName + QStringLiteral("-") + QString::number(connector->connector_type_id) + QStringLiteral("-") + modelName);
m_waylandOutputDevice->setModel(m_waylandOutput->model());
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("unkown");
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;
}
m_waylandOutput->setPhysicalSize(physicalSize);
m_waylandOutputDevice->setPhysicalSize(physicalSize);
// read in mode information
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::OutputInterface::ModeFlags flags;
KWayland::Server::OutputDeviceInterface::ModeFlags deviceflags;
if (isCurrentMode(m)) {
flags |= KWayland::Server::OutputInterface::ModeFlag::Current;
deviceflags |= KWayland::Server::OutputDeviceInterface::ModeFlag::Current;
}
if (m->type & DRM_MODE_TYPE_PREFERRED) {
flags |= KWayland::Server::OutputInterface::ModeFlag::Preferred;
deviceflags |= KWayland::Server::OutputDeviceInterface::ModeFlag::Preferred;
}
// 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;
}
m_waylandOutput->addMode(QSize(m->hdisplay, m->vdisplay), flags, refreshRate);
KWayland::Server::OutputDeviceInterface::Mode mode;
mode.id = i;
mode.size = QSize(m->hdisplay, m->vdisplay);
mode.flags = deviceflags;
mode.refreshRate = refreshRate;
qCDebug(KWIN_DRM) << "Adding mode: " << i << mode.size;
m_waylandOutputDevice->addMode(mode);
}
// set dpms
if (!m_dpms.isNull()) {
m_waylandOutput->setDpmsSupported(true);
m_waylandOutput->setDpmsMode(toWaylandDpmsMode(m_dpmsMode));
connect(m_waylandOutput.data(), &KWayland::Server::OutputInterface::dpmsModeRequested, this,
[this] (KWayland::Server::OutputInterface::DpmsMode mode) {
setDpms(fromWaylandDpmsMode(mode));
}, Qt::QueuedConnection
);
}
m_waylandOutput->create();
qCDebug(KWIN_DRM) << "Created OutputDevice";
m_waylandOutputDevice->create();
return true;
}
void DrmOutput::initUuid()
{
QCryptographicHash hash(QCryptographicHash::Md5);
hash.addData(QByteArray::number(m_connector));
hash.addData(m_edid.eisaId);
hash.addData(m_edid.monitorName);
hash.addData(m_edid.serialNumber);
m_uuid = hash.result().toHex().left(10);
}
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;
}
static bool verifyEdidHeader(drmModePropertyBlobPtr edid)
{
const uint8_t *data = reinterpret_cast<uint8_t*>(edid->data);
if (data[0] != 0x00) {
return false;
}
for (int i = 1; i < 7; ++i) {
if (data[i] != 0xFF) {
return false;
}
}
if (data[7] != 0x00) {
return false;
}
return true;
}
static QByteArray extractEisaId(drmModePropertyBlobPtr edid)
{
/*
* From EDID standard section 3.4:
* The ID Manufacturer Name field, shown in Table 3.5, contains a 2-byte representation of the monitor's
* manufacturer. This is the same as the EISA ID. It is based on compressed ASCII, “0001=A” ... “11010=Z”.
*
* The table:
* | Byte | Bit |
* | | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
* ----------------------------------------
* | 1 | 0)| (4| 3 | 2 | 1 | 0)| (4| 3 |
* | | * | Character 1 | Char 2|
* ----------------------------------------
* | 2 | 2 | 1 | 0)| (4| 3 | 2 | 1 | 0)|
* | | Character2| Character 3 |
* ----------------------------------------
**/
const uint8_t *data = reinterpret_cast<uint8_t*>(edid->data);
static const uint offset = 0x8;
char id[4];
if (data[offset] >> 7) {
// bit at position 7 is not a 0
return QByteArray();
}
// shift two bits to right, and with 7 right most bits
id[0] = 'A' + ((data[offset] >> 2) & 0x1f) -1;
// for first byte: take last two bits and shift them 3 to left (000xx000)
// for second byte: shift 5 bits to right and take 3 right most bits (00000xxx)
// or both together
id[1] = 'A' + (((data[offset] & 0x3) << 3) | ((data[offset + 1] >> 5) & 0x7)) - 1;
// take five right most bits
id[2] = 'A' + (data[offset + 1] & 0x1f) - 1;
id[3] = '\0';
return QByteArray(id);
}
static void extractMonitorDescriptorDescription(drmModePropertyBlobPtr blob, DrmOutput::Edid &edid)
{
// see section 3.10.3
const uint8_t *data = reinterpret_cast<uint8_t*>(blob->data);
static const uint offset = 0x36;
static const uint blockLength = 18;
for (int i = 0; i < 5; ++i) {
const uint co = offset + i * blockLength;
// Flag = 0000h when block used as descriptor
if (data[co] != 0) {
continue;
}
if (data[co + 1] != 0) {
continue;
}
// Reserved = 00h when block used as descriptor
if (data[co + 2] != 0) {
continue;
}
/*
* FFh: Monitor Serial Number - Stored as ASCII, code page # 437, ≤ 13 bytes.
* FEh: ASCII String - Stored as ASCII, code page # 437, ≤ 13 bytes.
* FDh: Monitor range limits, binary coded
* FCh: Monitor name, stored as ASCII, code page # 437
* FBh: Descriptor contains additional color point data
* FAh: Descriptor contains additional Standard Timing Identifications
* F9h - 11h: Currently undefined
* 10h: Dummy descriptor, used to indicate that the descriptor space is unused
* 0Fh - 00h: Descriptor defined by manufacturer.
*/
if (data[co + 3] == 0xfc && edid.monitorName.isEmpty()) {
edid.monitorName = QByteArray((const char *)(&data[co + 5]), 12).trimmed();
}
if (data[co + 3] == 0xfe) {
const QByteArray id = QByteArray((const char *)(&data[co + 5]), 12).trimmed();
if (!id.isEmpty()) {
edid.eisaId = id;
}
}
if (data[co + 3] == 0xff) {
edid.serialNumber = QByteArray((const char *)(&data[co + 5]), 12).trimmed();
}
}
}
static QByteArray extractSerialNumber(drmModePropertyBlobPtr edid)
{
// see section 3.4
const uint8_t *data = reinterpret_cast<uint8_t*>(edid->data);
static const uint offset = 0x0C;
/*
* The ID serial number is a 32-bit serial number used to differentiate between individual instances of the same model
* of monitor. Its use is optional. When used, the bit order for this field follows that shown in Table 3.6. The EDID
* structure Version 1 Revision 1 and later offer a way to represent the serial number of the monitor as an ASCII string
* in a separate descriptor block.
*/
uint32_t serialNumber = 0;
serialNumber = (uint32_t) data[offset + 0];
serialNumber |= (uint32_t) data[offset + 1] << 8;
serialNumber |= (uint32_t) data[offset + 2] << 16;
serialNumber |= (uint32_t) data[offset + 3] << 24;
if (serialNumber == 0) {
return QByteArray();
}
return QByteArray::number(serialNumber);
}
static QSize extractPhysicalSize(drmModePropertyBlobPtr edid)
{
const uint8_t *data = reinterpret_cast<uint8_t*>(edid->data);
return QSize(data[0x15], data[0x16]) * 10;
}
void DrmOutput::initEdid(drmModeConnector *connector)
{
ScopedDrmPointer<_drmModePropertyBlob, &drmModeFreePropertyBlob> edid;
for (int i = 0; i < connector->count_props; ++i) {
ScopedDrmPointer<_drmModeProperty, &drmModeFreeProperty> 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;
}
// for documentation see: http://read.pudn.com/downloads110/ebook/456020/E-EDID%20Standard.pdf
if (edid->length < 128) {
return;
}
if (!verifyEdidHeader(edid.data())) {
return;
}
m_edid.eisaId = extractEisaId(edid.data());
m_edid.serialNumber = extractSerialNumber(edid.data());
// parse monitor descriptor description
extractMonitorDescriptorDescription(edid.data(), m_edid);
m_edid.physicalSize = extractPhysicalSize(edid.data());
}
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_crtcId)) {
continue;
}
p->setOutput(this);
m_primaryPlane = p;
qCDebug(KWIN_DRM) << "Initialized primary plane" << p->id() << "on CRTC" << m_crtcId;
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_crtcId)) {
continue;
}
p->setOutput(this);
m_cursorPlane = p;
qCDebug(KWIN_DRM) << "Initialized cursor plane" << p->id() << "on CRTC" << m_crtcId;
return true;
}
return false;
}
void DrmOutput::initDpms(drmModeConnector *connector)
{
for (int i = 0; i < connector->count_props; ++i) {
ScopedDrmPointer<_drmModeProperty, &drmModeFreeProperty> property(drmModeGetProperty(m_backend->fd(), connector->props[i]));
if (!property) {
continue;
}
if (qstrcmp(property->name, "DPMS") == 0) {
m_dpms.swap(property);
break;
}
}
}
void DrmOutput::setDpms(DrmOutput::DpmsMode mode)
{
if (m_dpms.isNull()) {
return;
}
if (mode == m_dpmsMode) {
qCDebug(KWIN_DRM) << "New DPMS mode equals old mode. DPMS unchanged.";
return;
}
if (m_backend->atomicModeSetting()) {
drmModeAtomicReq *req = drmModeAtomicAlloc();
if (atomicReqModesetPopulate(req, mode == DpmsMode::On) == DrmObject::AtomicReturn::Error) {
qCWarning(KWIN_DRM) << "Failed to populate atomic request for output" << m_crtcId;
return;
}
if (drmModeAtomicCommit(m_backend->fd(), req, DRM_MODE_ATOMIC_ALLOW_MODESET, this)) {
qCWarning(KWIN_DRM) << "Failed to commit atomic request for output" << m_crtcId;
} else {
qCDebug(KWIN_DRM) << "DPMS set for output" << m_crtcId;
}
drmModeAtomicFree(req);
} else {
if (drmModeConnectorSetProperty(m_backend->fd(), m_connector, m_dpms->prop_id, uint64_t(mode)) < 0) {
qCWarning(KWIN_DRM) << "Setting DPMS failed";
return;
}
}
m_dpmsMode = mode;
if (m_waylandOutput) {
m_waylandOutput->setDpmsMode(toWaylandDpmsMode(m_dpmsMode));
}
emit dpmsChanged();
if (m_dpmsMode != DpmsMode::On) {
m_backend->outputWentOff();
} else {
m_backend->checkOutputsAreOn();
blank();
if (Compositor *compositor = Compositor::self()) {
compositor->addRepaintFull();
}
}
}
QString DrmOutput::name() const
{
if (!m_waylandOutput) {
return i18n("unknown");
}
return QStringLiteral("%1 %2").arg(m_waylandOutput->manufacturer()).arg(m_waylandOutput->model());
}
int DrmOutput::currentRefreshRate() const
{
if (!m_waylandOutput) {
return 60000;
}
return m_waylandOutput->refreshRate();
}
void DrmOutput::setGlobalPos(const QPoint &pos)
{
m_globalPos = pos;
if (m_waylandOutput) {
m_waylandOutput->setGlobalPosition(pos);
}
if (m_waylandOutputDevice) {
m_waylandOutputDevice->setGlobalPosition(pos);
}
}
void DrmOutput::setScale(qreal scale)
{
m_scale = scale;
if (m_waylandOutput) {
m_waylandOutput->setScale(scale);
}
if (m_waylandOutputDevice) {
m_waylandOutputDevice->setScale(scale);
}
}
void DrmOutput::setChanges(KWayland::Server::OutputChangeSet *changes)
{
m_changeset = changes;
qCDebug(KWIN_DRM) << "set changes in DrmOutput";
commitChanges();
}
bool DrmOutput::commitChanges()
{
Q_ASSERT(!m_waylandOutputDevice.isNull());
Q_ASSERT(!m_waylandOutput.isNull());
if (m_changeset.isNull()) {
qCDebug(KWIN_DRM) << "no changes";
// No changes to an output is an entirely valid thing
return true;
}
if (m_changeset->enabledChanged()) {
qCDebug(KWIN_DRM) << "Setting enabled:";
m_waylandOutputDevice->setEnabled(m_changeset->enabled());
}
if (m_changeset->modeChanged()) {
qCDebug(KWIN_DRM) << "Setting new mode:" << m_changeset->mode();
m_waylandOutputDevice->setCurrentMode(m_changeset->mode());
// FIXME: implement for wl_output
}
if (m_changeset->transformChanged()) {
qCDebug(KWIN_DRM) << "Server setting transform: " << (int)(m_changeset->transform());
m_waylandOutputDevice->setTransform(m_changeset->transform());
// FIXME: implement for wl_output
}
if (m_changeset->positionChanged()) {
qCDebug(KWIN_DRM) << "Server setting position: " << m_changeset->position();
m_waylandOutput->setGlobalPosition(m_changeset->position());
m_waylandOutputDevice->setGlobalPosition(m_changeset->position());
setGlobalPos(m_changeset->position());
// may just work already!
}
if (m_changeset->scaleChanged()) {
qCDebug(KWIN_DRM) << "Setting scale:" << m_changeset->scale();
setScale(m_changeset->scale());
}
return true;
}
void DrmOutput::pageFlipped()
{
if (m_backend->atomicModeSetting()){
foreach (DrmPlane *p, m_planesFlipList) {
pageFlippedBufferRemover(p->current(), p->next());
p->setCurrent(p->next());
p->setNext(nullptr);
}
m_planesFlipList.clear();
} else {
if (!m_nextBuffer) {
// on manual vt switch
if (m_currentBuffer) {
m_currentBuffer->releaseGbm();
}
return;
}
pageFlippedBufferRemover(m_currentBuffer, m_nextBuffer);
m_currentBuffer = m_nextBuffer;
m_nextBuffer = nullptr;
}
cleanupBlackBuffer();
}
void DrmOutput::pageFlippedBufferRemover(DrmBuffer *oldbuffer, DrmBuffer *newbuffer)
{
if (oldbuffer && oldbuffer->deleteAfterPageFlip() && oldbuffer != newbuffer) {
delete oldbuffer;
}
}
void DrmOutput::cleanupBlackBuffer()
{
if (m_blackBuffer) {
delete m_blackBuffer;
m_blackBuffer = nullptr;
}
}
bool DrmOutput::blank()
{
if (!m_blackBuffer) {
m_blackBuffer = m_backend->createBuffer(pixelSize());
if (!m_blackBuffer->map()) {
cleanupBlackBuffer();
return false;
}
m_blackBuffer->image()->fill(Qt::black);
}
// TODO: Do this atomically
return setModeLegacy(m_blackBuffer);
}
bool DrmOutput::present(DrmBuffer *buffer)
{
if (!buffer || buffer->bufferId() == 0) {
return false;
}
if (m_backend->atomicModeSetting()) {
return presentAtomically(buffer);
} else {
return presentLegacy(buffer);
}
}
bool DrmOutput::presentAtomically(DrmBuffer *buffer)
{
if (!LogindIntegration::self()->isActiveSession()) {
qCWarning(KWIN_DRM) << "Logind session not active.";
return false;
}
if (m_dpmsMode != DpmsMode::On) {
qCWarning(KWIN_DRM) << "No present() while screen off.";
return false;
}
if (m_primaryPlane->next()) {
qCWarning(KWIN_DRM) << "Page not yet flipped.";
return false;
}
DrmObject::AtomicReturn ret;
uint32_t flags = DRM_MODE_ATOMIC_NONBLOCK | DRM_MODE_PAGE_FLIP_EVENT;
// TODO: throwing an exception would be really handy here! (would mean change of compile options)
drmModeAtomicReq *req = drmModeAtomicAlloc();
if (!req) {
qCWarning(KWIN_DRM) << "DRM: couldn't allocate atomic request";
delete buffer;
return false;
}
// Do we need to set a new mode first?
bool doModeset = !m_primaryPlane->current();
if (doModeset) {
qCDebug(KWIN_DRM) << "Atomic Modeset requested";
if (drmModeCreatePropertyBlob(m_backend->fd(), &m_mode, sizeof(m_mode), &m_blobId)) {
qCWarning(KWIN_DRM) << "Failed to create property blob";
delete buffer;
return false;
}
ret = atomicReqModesetPopulate(req, true);
if (ret == DrmObject::AtomicReturn::Error){
drmModeAtomicFree(req);
delete buffer;
return false;
}
if (ret == DrmObject::AtomicReturn::Success) {
flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
}
}
m_primaryPlane->setNext(buffer); // TODO: Later not only use the primary plane for the buffer!
// i.e.: Assign planes
bool anyDamage = false;
foreach (DrmPlane* p, m_backend->planes()){
if (p->output() != this) {
continue;
}
ret = p->atomicReqPlanePopulate(req);
if (ret == DrmObject::AtomicReturn::Error) {
drmModeAtomicFree(req);
m_primaryPlane->setNext(nullptr);
m_planesFlipList.clear();
delete buffer;
return false;
}
if (ret == DrmObject::AtomicReturn::Success) {
anyDamage = true;
m_planesFlipList << p;
}
}
// no damage but force flip for atleast the primary plane anyway
if (!anyDamage) {
m_primaryPlane->setPropsValid(0);
if (m_primaryPlane->atomicReqPlanePopulate(req) == DrmObject::AtomicReturn::Error) {
drmModeAtomicFree(req);
m_primaryPlane->setNext(nullptr);
m_planesFlipList.clear();
delete buffer;
return false;
}
m_planesFlipList << m_primaryPlane;
}
if (drmModeAtomicCommit(m_backend->fd(), req, flags, this)) {
qCWarning(KWIN_DRM) << "Atomic request failed to commit:" << strerror(errno);
drmModeAtomicFree(req);
m_primaryPlane->setNext(nullptr);
m_planesFlipList.clear();
delete buffer;
return false;
}
if (doModeset) {
m_crtc->setPropsValid(m_crtc->propsValid() | m_crtc->propsPending());
m_conn->setPropsValid(m_conn->propsValid() | m_conn->propsPending());
}
foreach (DrmPlane* p, m_planesFlipList) {
p->setPropsValid(p->propsValid() | p->propsPending());
}
drmModeAtomicFree(req);
return true;
}
bool DrmOutput::presentLegacy(DrmBuffer *buffer)
{
if (m_nextBuffer) {
return false;
}
if (!LogindIntegration::self()->isActiveSession()) {
m_nextBuffer = buffer;
return false;
}
if (m_dpmsMode != DpmsMode::On) {
return false;
}
// Do we need to set a new mode first?
if (m_lastStride != buffer->stride() || m_lastGbm != buffer->isGbm()){
if (!setModeLegacy(buffer))
return false;
}
int errno_save = 0;
const bool ok = drmModePageFlip(m_backend->fd(), m_crtcId, buffer->bufferId(), DRM_MODE_PAGE_FLIP_EVENT, this) == 0;
if (ok) {
m_nextBuffer = buffer;
} else {
errno_save = errno;
qCWarning(KWIN_DRM) << "Page flip failed:" << strerror(errno);
delete buffer;
}
return ok;
}
bool DrmOutput::setModeLegacy(DrmBuffer *buffer)
{
if (drmModeSetCrtc(m_backend->fd(), m_crtcId, buffer->bufferId(), 0, 0, &m_connector, 1, &m_mode) == 0) {
m_lastStride = buffer->stride();
m_lastGbm = buffer->isGbm();
return true;
} else {
qCWarning(KWIN_DRM) << "Mode setting failed";
return false;
}
}
DrmObject::AtomicReturn DrmOutput::atomicReqModesetPopulate(drmModeAtomicReq *req, bool enable)
{
if (enable) {
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::SrcW), m_mode.hdisplay << 16);
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::SrcH), m_mode.vdisplay << 16);
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::CrtcW), m_mode.hdisplay);
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::CrtcH), m_mode.vdisplay);
} else {
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::SrcW), 0);
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::SrcH), 0);
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::CrtcW), 0);
m_primaryPlane->setPropValue(int(DrmPlane::PropertyIndex::CrtcH), 0);
}
bool ret = true;
m_crtc->setPropsPending(0);
m_conn->setPropsPending(0);
ret &= m_conn->atomicAddProperty(req, int(DrmConnector::PropertyIndex::CrtcId), enable ? m_crtc->id() : 0);
ret &= m_crtc->atomicAddProperty(req, int(DrmCrtc::PropertyIndex::ModeId), enable ? m_blobId : 0);
ret &= m_crtc->atomicAddProperty(req, int(DrmCrtc::PropertyIndex::Active), enable);
if (!ret) {
qCWarning(KWIN_DRM) << "Failed to populate atomic modeset";
return DrmObject::AtomicReturn::Error;
}
if (!m_crtc->propsPending() && !m_conn->propsPending()) {
return DrmObject::AtomicReturn::NoChange;
}
return DrmObject::AtomicReturn::Success;
}
}
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