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Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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Public Member Functions | Public Attributes | List of all members
QSGSoftwareRenderContext Class Reference

#include <qsgsoftwarecontext_p.h>

+ Inheritance diagram for QSGSoftwareRenderContext:
+ Collaboration diagram for QSGSoftwareRenderContext:

Public Member Functions

 QSGSoftwareRenderContext (QSGContext *ctx)
 
void initializeIfNeeded ()
 
void invalidate () override
 
void renderNextFrame (QSGRenderer *renderer) override
 
QSGTexture * createTexture (const QImage &image, uint flags=CreateTexture_Alpha) const override
 
QSGRenderer * createRenderer (QSGRendererInterface::RenderMode) override
 
int maxTextureSize () const override
 
- Public Member Functions inherited from QSGRenderContext
 QSGRenderContext (QSGContext *context)
 
 ~QSGRenderContext () override
 
QSGContext * sceneGraphContext () const
 
virtual bool isValid () const
 
virtual void initialize (const InitParams *params)
 
virtual void prepareSync (qreal devicePixelRatio, QRhiCommandBuffer *cb, const QQuickGraphicsConfiguration &config)
 
virtual void beginNextFrame (QSGRenderer *renderer, const QSGRenderTarget &renderTarget, RenderPassCallback mainPassRecordingStart, RenderPassCallback mainPassRecordingEnd, void *callbackUserData)
 
virtual void endNextFrame (QSGRenderer *renderer)
 
virtual void endSync ()
 
virtual void preprocess ()
 Do necessary preprocessing before the frame.
 
virtual void invalidateGlyphCaches ()
 
virtual QSGDistanceFieldGlyphCache * distanceFieldGlyphCache (const QRawFont &font, int renderTypeQuality)
 Factory function for scene graph backends of the distance-field glyph cache.
 
virtual QSGCurveGlyphAtlas * curveGlyphAtlas (const QRawFont &font)
 Factory function for curve atlases that can be used to provide geometry for the curve renderer for a given font.
 
QSGTexture * textureForFactory (QQuickTextureFactory *factory, QQuickWindow *window)
 Factory function for the scene graph renderers.
 
virtual QSGTexture * compressedTextureForFactory (const QSGCompressedTextureFactory *) const
 Return the texture corresponding to a texture factory.
 
void unregisterFontengineForCleanup (QFontEngine *engine)
 
void registerFontengineForCleanup (QFontEngine *engine)
 
virtual QRhi * rhi () const
 
- Public Member Functions inherited from QObject
Q_INVOKABLE QObject (QObject *parent=nullptr)
 Constructs an object with parent object parent.
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects.
 
virtual bool event (QEvent *event)
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 Filters events if this object has been installed as an event filter for the watched object.
 
QString objectName () const
 
Q_WEAK_OVERLOAD void setObjectName (const QString &name)
 Sets the object's name to name.
 
void setObjectName (QAnyStringView name)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
QBindable< QString > bindableObjectName ()
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false.
 
bool isWindowType () const
 Returns true if the object is a window; otherwise returns false.
 
bool isQuickItemType () const
 Returns true if the object is a QQuickItem; otherwise returns false.
 
bool signalsBlocked () const noexcept
 Returns true if signals are blocked; otherwise returns false.
 
bool blockSignals (bool b) noexcept
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
 
QThread * thread () const
 Returns the thread in which the object lives.
 
bool moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
 Changes the thread affinity for this object and its children and returns true on success.
 
int startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
 This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
 
int startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
 
void killTimer (int id)
 Kills the timer with timer identifier, id.
 
void killTimer (Qt::TimerId id)
 
template<typename T >
T findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
 
template<typename T >
QList< T > findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
 
template<typename T >
T findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
template<typename T >
QList< T > findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
const QObjectList & children () const
 Returns a list of child objects.
 
void setParent (QObject *parent)
 Makes the object a child of parent.
 
void installEventFilter (QObject *filterObj)
 Installs an event filter filterObj on this object.
 
void removeEventFilter (QObject *obj)
 Removes an event filter object obj from this object.
 
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const
 
bool disconnect (const QObject *receiver, const char *member=nullptr) const
 
void dumpObjectTree () const
 Dumps a tree of children to the debug output.
 
void dumpObjectInfo () const
 Dumps information about signal connections, etc.
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value.
 
bool setProperty (const char *name, QVariant &&value)
 
QVariant property (const char *name) const
 Returns the value of the object's name property.
 
QList< QByteArray > dynamicPropertyNames () const
 
QBindingStorage * bindingStorage ()
 
const QBindingStorage * bindingStorage () const
 
QObject * parent () const
 Returns a pointer to the parent object.
 
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false.
 

Public Attributes

bool m_initialized
 
QPainter * m_activePainter
 

Additional Inherited Members

- Public Types inherited from QSGRenderContext
enum  CreateTextureFlags { CreateTexture_Alpha = 0x1 , CreateTexture_Atlas = 0x2 , CreateTexture_Mipmap = 0x4 }
 
using RenderPassCallback = void (*)(void *)
 
- Public Slots inherited from QSGRenderContext
void textureFactoryDestroyed (QObject *o)
 
- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 
- Signals inherited from QSGRenderContext
void initialized ()
 
void invalidated ()
 
void releaseCachedResourcesRequested ()
 
- Signals inherited from QObject
void destroyed (QObject *=nullptr)
 This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
 
void objectNameChanged (const QString &objectName, QPrivateSignal)
 This signal is emitted after the object's name has been changed.
 
- Static Public Member Functions inherited from QObject
static QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 \threadsafe
 
static QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
template<typename Func1 , typename Func2 >
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
 
template<typename Func1 , typename Func2 >
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 \threadsafe
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static bool disconnect (const QMetaObject::Connection &)
 Disconnect a connection.
 
template<typename Func1 , typename Func2 >
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot)
 
template<typename Func1 >
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero)
 
- Protected Member Functions inherited from QObject
QObject * sender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
 
int senderSignalIndex () const
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal.
 
bool isSignalConnected (const QMetaMethod &signal) const
 
virtual void timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object.
 
virtual void childEvent (QChildEvent *event)
 This event handler can be reimplemented in a subclass to receive child events.
 
virtual void customEvent (QEvent *event)
 This event handler can be reimplemented in a subclass to receive custom events.
 
virtual void connectNotify (const QMetaMethod &signal)
 
virtual void disconnectNotify (const QMetaMethod &signal)
 
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)
 
- Protected Attributes inherited from QSGRenderContext
QPointer< QSGContext > m_sg
 
QMutex m_mutex
 
QHash< QObject *, QSGTexture * > m_textures
 
QSet< QSGTexture * > m_texturesToDelete
 
QHash< FontKey, QSGDistanceFieldGlyphCache * > m_glyphCaches
 
QHash< QFontEngine *, int > m_fontEnginesToClean
 
- Protected Attributes inherited from QObject
QScopedPointer< QObjectData > d_ptr
 
- Properties inherited from QObject
QString objectName
 the name of this object
 
- Related Symbols inherited from QObject
 Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
 
 
 
 \macro Q_CLASSINFO(Name, Value)
 

Detailed Description

Definition at line 32 of file qsgsoftwarecontext_p.h.

Constructor & Destructor Documentation

◆ QSGSoftwareRenderContext()

QT_BEGIN_NAMESPACE QSGSoftwareRenderContext::QSGSoftwareRenderContext ( QSGContext * ctx)

Definition at line 50 of file qsgsoftwarecontext.cpp.

Member Function Documentation

◆ createRenderer()

QSGRenderer * QSGSoftwareRenderContext::createRenderer ( QSGRendererInterface::RenderMode )
overridevirtual

Implements QSGRenderContext.

Definition at line 130 of file qsgsoftwarecontext.cpp.

◆ createTexture()

QSGTexture * QSGSoftwareRenderContext::createTexture ( const QImage & image,
uint flags = CreateTexture_Alpha ) const
overridevirtual

Implements QSGRenderContext.

Definition at line 125 of file qsgsoftwarecontext.cpp.

◆ initializeIfNeeded()

void QSGSoftwareRenderContext::initializeIfNeeded ( )

Definition at line 100 of file qsgsoftwarecontext.cpp.

References emit, QSGRenderContext::initialized(), and m_initialized.

Referenced by QSGSoftwareRenderLoop::renderWindow().

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◆ invalidate()

void QSGSoftwareRenderContext::invalidate ( )
overridevirtual

Reimplemented from QSGRenderContext.

Definition at line 108 of file qsgsoftwarecontext.cpp.

References QSet< T >::clear(), QHash< Key, T >::clear(), emit, QSGRenderContext::invalidated(), QHash< Key, T >::isEmpty(), QSGRenderContext::m_fontEnginesToClean, QSGRenderContext::m_glyphCaches, QSGRenderContext::m_sg, QSGRenderContext::m_textures, QSGRenderContext::m_texturesToDelete, Q_ASSERT, qDeleteAll(), and QSGContext::renderContextInvalidated().

Referenced by QSGSoftwareRenderThread::event().

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◆ maxTextureSize()

int QSGSoftwareRenderContext::maxTextureSize ( ) const
overridevirtual

Implements QSGRenderContext.

Definition at line 141 of file qsgsoftwarecontext.cpp.

◆ renderNextFrame()

void QSGSoftwareRenderContext::renderNextFrame ( QSGRenderer * renderer)
overridevirtual

Implements QSGRenderContext.

Definition at line 136 of file qsgsoftwarecontext.cpp.

References renderer.

Member Data Documentation

◆ m_activePainter

QPainter* QSGSoftwareRenderContext::m_activePainter

Definition at line 45 of file qsgsoftwarecontext_p.h.

◆ m_initialized

bool QSGSoftwareRenderContext::m_initialized

Definition at line 44 of file qsgsoftwarecontext_p.h.

Referenced by initializeIfNeeded().

The documentation for this class was generated from the following files: