diff options
Diffstat (limited to 'src/plugins/platforms/eglfs/deviceintegration/eglfs_kms')
4 files changed, 66 insertions, 14 deletions
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.cpp index 503419cf91..ff18b43a3d 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.cpp +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.cpp @@ -83,7 +83,13 @@ bool QEglFSKmsGbmDevice::open() setFd(fd); - m_eventReader.create(this); + if (usesEventReader()) { + qCDebug(qLcEglfsKmsDebug, "Using dedicated drm event reading thread"); + m_eventReader.create(this); + } else { + qCDebug(qLcEglfsKmsDebug, "Not using dedicated drm event reading thread; " + "threaded multi-screen setups may experience problems"); + } return true; } @@ -92,7 +98,8 @@ void QEglFSKmsGbmDevice::close() { // Note: screens are gone at this stage. - m_eventReader.destroy(); + if (usesEventReader()) + m_eventReader.destroy(); if (m_gbm_device) { gbm_device_destroy(m_gbm_device); @@ -169,4 +176,10 @@ void QEglFSKmsGbmDevice::registerScreen(QPlatformScreen *screen, m_globalCursor->reevaluateVisibilityForScreens(); } +bool QEglFSKmsGbmDevice::usesEventReader() const +{ + static const bool eventReaderThreadDisabled = qEnvironmentVariableIntValue("QT_QPA_EGLFS_KMS_NO_EVENT_READER_THREAD"); + return !eventReaderThreadDisabled; +} + QT_END_NAMESPACE diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.h b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.h index f1476f8ffa..01dc86309e 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.h +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmdevice.h @@ -44,6 +44,7 @@ #include "qeglfskmsgbmcursor.h" #include <qeglfskmsdevice.h> +#include <qeglfskmseventreader.h> #include <gbm.h> @@ -75,11 +76,14 @@ public: const QPoint &virtualPos, const QList<QPlatformScreen *> &virtualSiblings) override; + bool usesEventReader() const; + QEglFSKmsEventReader *eventReader() { return &m_eventReader; } + private: Q_DISABLE_COPY(QEglFSKmsGbmDevice) gbm_device *m_gbm_device; - + QEglFSKmsEventReader m_eventReader; QEglFSKmsGbmCursor *m_globalCursor; }; diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp index 95b51c9601..31cf5f0353 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.cpp @@ -56,6 +56,8 @@ QT_BEGIN_NAMESPACE Q_DECLARE_LOGGING_CATEGORY(qLcEglfsKmsDebug) +QMutex QEglFSKmsGbmScreen::m_nonThreadedFlipMutex; + static inline uint32_t drmFormatToGbmFormat(uint32_t drmFormat) { Q_ASSERT(DRM_FORMAT_XRGB8888 == GBM_FORMAT_XRGB8888); @@ -262,6 +264,20 @@ void QEglFSKmsGbmScreen::ensureModeSet(uint32_t fb) } } +void QEglFSKmsGbmScreen::nonThreadedPageFlipHandler(int fd, + unsigned int sequence, + unsigned int tv_sec, + unsigned int tv_usec, + void *user_data) +{ + Q_UNUSED(fd); + Q_UNUSED(sequence); + Q_UNUSED(tv_sec); + Q_UNUSED(tv_usec); + QEglFSKmsGbmScreen *screen = static_cast<QEglFSKmsGbmScreen *>(user_data); + screen->flipFinished(); +} + void QEglFSKmsGbmScreen::waitForFlip() { if (m_headless || m_cloneSource) @@ -271,12 +287,24 @@ void QEglFSKmsGbmScreen::waitForFlip() if (!m_gbm_bo_next) return; - m_flipMutex.lock(); - device()->eventReader()->startWaitFlip(this, &m_flipMutex, &m_flipCond); - m_flipCond.wait(&m_flipMutex); - m_flipMutex.unlock(); - - flipFinished(); + QEglFSKmsGbmDevice *dev = static_cast<QEglFSKmsGbmDevice *>(device()); + if (dev->usesEventReader()) { + m_flipMutex.lock(); + dev->eventReader()->startWaitFlip(this, &m_flipMutex, &m_flipCond); + m_flipCond.wait(&m_flipMutex); + m_flipMutex.unlock(); + flipFinished(); + } else { + QMutexLocker lock(&m_nonThreadedFlipMutex); + while (m_gbm_bo_next) { + drmEventContext drmEvent; + memset(&drmEvent, 0, sizeof(drmEvent)); + drmEvent.version = 2; + drmEvent.vblank_handler = nullptr; + drmEvent.page_flip_handler = nonThreadedPageFlipHandler; + drmHandleEvent(device()->fd(), &drmEvent); + } + } #if QT_CONFIG(drm_atomic) device()->threadLocalAtomicReset(); @@ -359,20 +387,21 @@ void QEglFSKmsGbmScreen::flip() if (d.screen != this) { d.screen->ensureModeSet(fb->fb); d.cloneFlipPending = true; + QKmsOutput &destOutput(d.screen->output()); if (device()->hasAtomicSupport()) { #if QT_CONFIG(drm_atomic) drmModeAtomicReq *request = device()->threadLocalAtomicRequest(); if (request) { - drmModeAtomicAddProperty(request, d.screen->output().eglfs_plane->id, - d.screen->output().eglfs_plane->framebufferPropertyId, fb->fb); - drmModeAtomicAddProperty(request, d.screen->output().eglfs_plane->id, - d.screen->output().eglfs_plane->crtcPropertyId, op.crtc_id); + drmModeAtomicAddProperty(request, destOutput.eglfs_plane->id, + destOutput.eglfs_plane->framebufferPropertyId, fb->fb); + drmModeAtomicAddProperty(request, destOutput.eglfs_plane->id, + destOutput.eglfs_plane->crtcPropertyId, destOutput.crtc_id); } #endif } else { int ret = drmModePageFlip(fd, - d.screen->output().crtc_id, + destOutput.crtc_id, fb->fb, DRM_MODE_PAGE_FLIP_EVENT, d.screen); diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.h b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.h index 69feeee703..b00d338b43 100644 --- a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.h +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmscreen.h @@ -75,6 +75,11 @@ private: void ensureModeSet(uint32_t fb); void cloneDestFlipFinished(QEglFSKmsGbmScreen *cloneDestScreen); void updateFlipStatus(); + static void nonThreadedPageFlipHandler(int fd, + unsigned int sequence, + unsigned int tv_sec, + unsigned int tv_usec, + void *user_data); gbm_surface *m_gbm_surface; @@ -84,6 +89,7 @@ private: QMutex m_flipMutex; QWaitCondition m_flipCond; + static QMutex m_nonThreadedFlipMutex; QScopedPointer<QEglFSKmsGbmCursor> m_cursor; |