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backends/drm: port away from mode indices

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They're error prone and don't really work for changing modes. Having
a current mode in DrmConnector also doesn't work well together with
the transactional style of how DrmPipeline operates
This commit is contained in:
Xaver Hugl 2022-02-03 18:23:05 +01:00
parent 03efdabf26
commit e8eb55ad2e
6 changed files with 74 additions and 109 deletions
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78
src/backends/drm/drm_object_connector.cpp
View file

@ -23,6 +23,22 @@
namespace KWin
{
static bool checkIfEqual(const drmModeModeInfo *one, const drmModeModeInfo *two)
{
return one->clock == two->clock
&& one->hdisplay == two->hdisplay
&& one->hsync_start == two->hsync_start
&& one->hsync_end == two->hsync_end
&& one->htotal == two->htotal
&& one->hskew == two->hskew
&& one->vdisplay == two->vdisplay
&& one->vsync_start == two->vsync_start
&& one->vsync_end == two->vsync_end
&& one->vtotal == two->vtotal
&& one->vscan == two->vscan
&& one->vrefresh == two->vrefresh;
}
static quint64 refreshRateForMode(_drmModeModeInfo *m)
{
// Calculate higher precision (mHz) refresh rate
@ -81,6 +97,11 @@ uint32_t DrmConnectorMode::blobId()
return m_blobId;
}
bool DrmConnectorMode::operator==(const DrmConnectorMode &otherMode)
{
return checkIfEqual(&m_nativeMode, &otherMode.m_nativeMode);
}
DrmConnector::DrmConnector(DrmGpu *gpu, uint32_t connectorId)
: DrmObject(gpu, connectorId, {
PropertyDefinition(QByteArrayLiteral("CRTC_ID"), Requirement::Required),
@ -124,11 +145,6 @@ DrmConnector::DrmConnector(DrmGpu *gpu, uint32_t connectorId)
}
}
DrmConnector::~DrmConnector()
{
qDeleteAll(m_modes);
}
bool DrmConnector::init()
{
return m_conn && initProps();
@ -197,51 +213,17 @@ QSize DrmConnector::physicalSize() const
return m_physicalSize;
}
DrmConnectorMode *DrmConnector::currentMode() const
{
return m_modes[m_modeIndex];
}
int DrmConnector::currentModeIndex() const
{
return m_modeIndex;
}
QVector<DrmConnectorMode *> DrmConnector::modes() const
QVector<QSharedPointer<DrmConnectorMode>> DrmConnector::modes() const
{
return m_modes;
}
void DrmConnector::setModeIndex(int index)
QSharedPointer<DrmConnectorMode> DrmConnector::findMode(const drmModeModeInfo &modeInfo) const
{
m_modeIndex = index;
}
static bool checkIfEqual(const drmModeModeInfo *one, const drmModeModeInfo *two)
{
return one->clock == two->clock
&& one->hdisplay == two->hdisplay
&& one->hsync_start == two->hsync_start
&& one->hsync_end == two->hsync_end
&& one->htotal == two->htotal
&& one->hskew == two->hskew
&& one->vdisplay == two->vdisplay
&& one->vsync_start == two->vsync_start
&& one->vsync_end == two->vsync_end
&& one->vtotal == two->vtotal
&& one->vscan == two->vscan
&& one->vrefresh == two->vrefresh;
}
void DrmConnector::findCurrentMode(drmModeModeInfo currentMode)
{
for (int i = 0; i < m_modes.count(); i++) {
if (checkIfEqual(m_modes[i]->nativeMode(), &currentMode)) {
m_modeIndex = i;
return;
}
}
m_modeIndex = 0;
const auto it = std::find_if(m_modes.constBegin(), m_modes.constEnd(), [&modeInfo](const auto &mode) {
return checkIfEqual(mode->nativeMode(), &modeInfo);
});
return it == m_modes.constEnd() ? nullptr : *it;
}
AbstractWaylandOutput::SubPixel DrmConnector::subpixel() const
@ -322,12 +304,11 @@ bool DrmConnector::needsModeset() const
void DrmConnector::updateModes()
{
qDeleteAll(m_modes);
m_modes.clear();
// reload modes
for (int i = 0; i < m_conn->count_modes; i++) {
m_modes.append(new DrmConnectorMode(this, m_conn->modes[i]));
m_modes.append(QSharedPointer<DrmConnectorMode>::create(this, m_conn->modes[i]));
}
}
@ -408,6 +389,9 @@ bool DrmConnector::updateProperties()
// init modes
updateModes();
if (!m_modes.isEmpty() && !m_pipeline->pending.mode) {
m_pipeline->pending.mode = m_modes.constFirst();
}
return true;
}

13
src/backends/drm/drm_object_connector.h
View file

@ -41,6 +41,8 @@ public:
QSize size() const;
uint32_t refreshRate() const;
bool operator==(const DrmConnectorMode &otherMode);
private:
DrmConnector *m_connector;
drmModeModeInfo m_nativeMode;
@ -53,7 +55,6 @@ class DrmConnector : public DrmObject
{
public:
DrmConnector(DrmGpu *gpu, uint32_t connectorId);
~DrmConnector() override;
enum class PropertyIndex : uint32_t {
CrtcId = 0,
@ -97,11 +98,8 @@ public:
QString modelName() const;
QSize physicalSize() const;
DrmConnectorMode *currentMode() const;
int currentModeIndex() const;
QVector<DrmConnectorMode *> modes() const;
void setModeIndex(int index);
void findCurrentMode(drmModeModeInfo currentMode);
QVector<QSharedPointer<DrmConnectorMode>> modes() const;
QSharedPointer<DrmConnectorMode> findMode(const drmModeModeInfo &modeInfo) const;
void updateModes();
AbstractWaylandOutput::SubPixel subpixel() const;
@ -118,8 +116,7 @@ private:
DrmScopedPointer<drmModeConnector> m_conn;
Edid m_edid;
QSize m_physicalSize = QSize(-1, -1);
QVector<DrmConnectorMode *> m_modes;
int m_modeIndex = 0;
QVector<QSharedPointer<DrmConnectorMode>> m_modes;
uint32_t m_possibleCrtcs = 0;
friend QDebug& operator<<(QDebug& s, const KWin::DrmConnector *obj);

63
src/backends/drm/drm_output.cpp
View file

@ -46,8 +46,8 @@ DrmOutput::DrmOutput(DrmPipeline *pipeline)
, m_connector(pipeline->connector())
{
m_pipeline->setOutput(this);
auto conn = m_pipeline->connector();
m_renderLoop->setRefreshRate(conn->currentMode()->refreshRate());
const auto conn = m_pipeline->connector();
m_renderLoop->setRefreshRate(m_pipeline->pending.mode->refreshRate());
setSubPixelInternal(conn->subpixel());
setInternal(conn->isInternal());
setCapabilityInternal(DrmOutput::Capability::Dpms);
@ -177,13 +177,13 @@ QVector<AbstractWaylandOutput::Mode> DrmOutput::getModes() const
{
bool modeFound = false;
QVector<Mode> modes;
auto conn = m_pipeline->connector();
QVector<DrmConnectorMode *> modelist = conn->modes();
const auto modelist = m_pipeline->connector()->modes();
modes.reserve(modelist.count());
for (int i = 0; i < modelist.count(); ++i) {
Mode mode;
if (i == conn->currentModeIndex()) {
// compare the actual mode objects, not the pointers!
if (*modelist[i] == *m_pipeline->pending.mode) {
mode.flags |= ModeFlag::Current;
modeFound = true;
}
@ -298,34 +298,24 @@ DrmPlane::Transformations outputToPlaneTransform(DrmOutput::Transform transform)
void DrmOutput::updateModes()
{
auto conn = m_pipeline->connector();
conn->updateModes();
const auto modes = getModes();
setModes(modes);
auto it = std::find_if(modes.constBegin(), modes.constEnd(),
[](const AbstractWaylandOutput::Mode &mode){
return mode.flags.testFlag(ModeFlag::Current);
}
);
Q_ASSERT(it != modes.constEnd());
AbstractWaylandOutput::Mode mode = *it;
// mode changed
if (mode.size != modeSize() || mode.refreshRate != refreshRate()) {
m_pipeline->pending.modeIndex = mode.id;
if (DrmPipeline::commitPipelines({m_pipeline}, DrmPipeline::CommitMode::Test)) {
m_pipeline->connector()->updateModes();
setModes(getModes());
if (m_pipeline->pending.crtc) {
const auto currentMode = m_pipeline->connector()->findMode(m_pipeline->pending.crtc->queryCurrentMode());
if (currentMode != m_pipeline->pending.mode) {
// DrmConnector::findCurrentMode might fail
m_pipeline->pending.mode = currentMode ? currentMode : m_pipeline->connector()->modes().constFirst();
if (DrmPipeline::commitPipelines(m_gpu->pipelines(), DrmPipeline::CommitMode::Test)) {
m_pipeline->applyPendingChanges();
auto mode = m_pipeline->connector()->currentMode();
setCurrentModeInternal(mode->size(), mode->refreshRate());
m_renderLoop->setRefreshRate(mode->refreshRate());
setCurrentModeInternal(m_pipeline->pending.mode->size(), m_pipeline->pending.mode->refreshRate());
m_renderLoop->setRefreshRate(m_pipeline->pending.mode->refreshRate());
} else {
qCWarning(KWIN_DRM) << "Setting changed mode failed!";
m_pipeline->revertPendingChanges();
}
}
}
}
bool DrmOutput::needsSoftwareTransformation() const
{
@ -409,21 +399,17 @@ bool DrmOutput::queueChanges(const WaylandOutputConfig &config)
static bool valid;
static int envOnlySoftwareRotations = qEnvironmentVariableIntValue("KWIN_DRM_SW_ROTATIONS_ONLY", &valid) == 1 || !valid;
auto props = config.constChangeSet(this);
const auto props = config.constChangeSet(this);
m_pipeline->pending.active = props->enabled;
auto modelist = m_connector->modes();
int index = -1;
for (int i = 0; i < modelist.size(); i++) {
if (modelist[i]->size() == props->modeSize && modelist[i]->refreshRate() == props->refreshRate) {
index = i;
break;
}
}
if (index == -1) {
const auto modelist = m_connector->modes();
const auto it = std::find_if(modelist.begin(), modelist.end(), [&props](const auto &mode) {
return mode->size() == props->modeSize && mode->refreshRate() == props->refreshRate;
});
if (it == modelist.end()) {
qCWarning(KWIN_DRM).nospace() << "Could not find mode " << props->modeSize << "@" << props->refreshRate << " for output " << this;
return false;
}
m_pipeline->pending.modeIndex = index;
m_pipeline->pending.mode = *it;
m_pipeline->pending.overscan = props->overscan;
m_pipeline->pending.rgbRange = props->rgbRange;
m_pipeline->pending.sourceTransformation = outputToPlaneTransform(props->transform);
@ -448,8 +434,7 @@ void DrmOutput::applyQueuedChanges(const WaylandOutputConfig &config)
setScale(props->scale);
setTransformInternal(props->transform);
m_connector->setModeIndex(m_pipeline->pending.modeIndex);
auto mode = m_connector->currentMode();
const auto &mode = m_pipeline->pending.mode;
setCurrentModeInternal(mode->size(), mode->refreshRate());
m_renderLoop->setRefreshRate(mode->refreshRate());
setOverscanInternal(m_pipeline->pending.overscan);

15
src/backends/drm/drm_pipeline.cpp
View file

@ -191,7 +191,7 @@ bool DrmPipeline::populateAtomicValues(drmModeAtomicReq *req, uint32_t &flags)
if (pending.crtc) {
pending.crtc->setPending(DrmCrtc::PropertyIndex::VrrEnabled, pending.syncMode == RenderLoopPrivate::SyncMode::Adaptive);
pending.crtc->setPending(DrmCrtc::PropertyIndex::Gamma_LUT, pending.gamma ? pending.gamma->blobId() : 0);
auto modeSize = m_connector->modes().at(pending.modeIndex)->size();
const auto modeSize = pending.mode->size();
pending.crtc->primaryPlane()->set(QPoint(0, 0), m_primaryBuffer ? m_primaryBuffer->size() : bufferSize(), QPoint(0, 0), modeSize);
pending.crtc->primaryPlane()->setBuffer(activePending() ? m_primaryBuffer.get() : nullptr);
@ -224,7 +224,6 @@ void DrmPipeline::prepareAtomicModeset()
m_connector->setPending(DrmConnector::PropertyIndex::CrtcId, 0);
return;
}
auto mode = m_connector->modes().at(pending.modeIndex);
m_connector->setPending(DrmConnector::PropertyIndex::CrtcId, activePending() ? pending.crtc->id() : 0);
if (const auto &prop = m_connector->getProp(DrmConnector::PropertyIndex::Broadcast_RGB)) {
@ -235,7 +234,7 @@ void DrmPipeline::prepareAtomicModeset()
}
pending.crtc->setPending(DrmCrtc::PropertyIndex::Active, activePending());
pending.crtc->setPending(DrmCrtc::PropertyIndex::ModeId, activePending() ? mode->blobId() : 0);
pending.crtc->setPending(DrmCrtc::PropertyIndex::ModeId, activePending() ? pending.mode->blobId() : 0);
pending.crtc->primaryPlane()->setPending(DrmPlane::PropertyIndex::CrtcId, activePending() ? pending.crtc->id() : 0);
pending.crtc->primaryPlane()->setTransformation(pending.bufferTransformation);
@ -400,7 +399,7 @@ void DrmPipeline::applyPendingChanges()
QSize DrmPipeline::bufferSize() const
{
const auto modeSize = m_connector->modes().at(pending.modeIndex)->size();
const auto modeSize = pending.mode->size();
if (pending.bufferTransformation & (DrmPlane::Transformation::Rotate90 | DrmPlane::Transformation::Rotate270)) {
return modeSize.transposed();
}
@ -409,7 +408,7 @@ QSize DrmPipeline::bufferSize() const
QSize DrmPipeline::sourceSize() const
{
const auto modeSize = m_connector->modes().at(pending.modeIndex)->size();
const auto modeSize = pending.mode->size();
if (pending.sourceTransformation & (DrmPlane::Transformation::Rotate90 | DrmPlane::Transformation::Rotate270)) {
return modeSize.transposed();
}
@ -418,7 +417,7 @@ QSize DrmPipeline::sourceSize() const
bool DrmPipeline::isCursorVisible() const
{
const QRect mode = QRect(QPoint(), m_connector->modes().at(pending.modeIndex)->size());
const QRect mode = QRect(QPoint(), pending.mode->size());
return pending.cursorBo && QRect(pending.cursorPos, pending.cursorBo->size()).intersects(mode);
}
@ -500,7 +499,7 @@ bool DrmPipeline::needsModeset() const
{
return pending.crtc != m_current.crtc
|| pending.active != m_current.active
|| pending.modeIndex != m_current.modeIndex
|| pending.mode != m_current.mode
|| pending.rgbRange != m_current.rgbRange
|| pending.bufferTransformation != m_current.bufferTransformation
|| m_connector->linkStatus() == DrmConnector::LinkStatus::Bad
@ -509,7 +508,7 @@ bool DrmPipeline::needsModeset() const
bool DrmPipeline::activePending() const
{
return pending.crtc && pending.active;
return pending.crtc && pending.mode && pending.active;
}
void DrmPipeline::revertPendingChanges()

3
src/backends/drm/drm_pipeline.h
View file

@ -30,6 +30,7 @@ class DrmCrtc;
class DrmBuffer;
class DrmDumbBuffer;
class GammaRamp;
class DrmConnectorMode;
class DrmGammaRamp
{
@ -97,7 +98,7 @@ public:
DrmCrtc *crtc = nullptr;
bool active = true; // whether or not the pipeline should be currently used
bool enabled = true;// whether or not the pipeline needs a crtc
int modeIndex = 0;
QSharedPointer<DrmConnectorMode> mode;
uint32_t overscan = 0;
AbstractWaylandOutput::RgbRange rgbRange = AbstractWaylandOutput::RgbRange::Automatic;
RenderLoopPrivate::SyncMode syncMode = RenderLoopPrivate::SyncMode::Fixed;

3
src/backends/drm/drm_pipeline_legacy.cpp
View file

@ -33,9 +33,8 @@ bool DrmPipeline::presentLegacy()
bool DrmPipeline::legacyModeset()
{
auto mode = m_connector->modes().at(pending.modeIndex);
uint32_t connId = m_connector->id();
if (!checkTestBuffer() || drmModeSetCrtc(gpu()->fd(), pending.crtc->id(), m_primaryBuffer->bufferId(), 0, 0, &connId, 1, mode->nativeMode()) != 0) {
if (!checkTestBuffer() || drmModeSetCrtc(gpu()->fd(), pending.crtc->id(), m_primaryBuffer->bufferId(), 0, 0, &connId, 1, pending.mode->nativeMode()) != 0) {
qCWarning(KWIN_DRM) << "Modeset failed!" << strerror(errno);
pending = m_next;
m_primaryBuffer = m_oldTestBuffer;