Qt 6.x
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Public Member Functions | List of all members
QRhiBackingStore Class Reference

#include <qrhibackingstore_p.h>

+ Inheritance diagram for QRhiBackingStore:
+ Collaboration diagram for QRhiBackingStore:

Public Member Functions

 QRhiBackingStore (QWindow *window)
 
 ~QRhiBackingStore ()
 
void flush (QWindow *window, const QRegion &region, const QPoint &offset) override
 Flushes the given region from the specified window.
 
- Public Member Functions inherited from QRasterBackingStore
 QRasterBackingStore (QWindow *window)
 
 ~QRasterBackingStore ()
 
void resize (const QSize &size, const QRegion &staticContents) override
 
bool scroll (const QRegion &area, int dx, int dy) override
 Scrolls the given area dx pixels to the right and dy downward; both dx and dy may be negative.
 
void beginPaint (const QRegion &region) override
 This function is called before painting onto the surface begins, with the region in which the painting will occur.
 
QPaintDevice * paintDevice () override
 Implement this function to return the appropriate paint device.
 
QImage toImage () const override
 Implemented in subclasses to return the content of the backingstore as a QImage.
 
- Public Member Functions inherited from QPlatformBackingStore
 QPlatformBackingStore (QWindow *window)
 Constructs an empty surface for the given top-level window.
 
virtual ~QPlatformBackingStore ()
 Destroys this surface.
 
QWindow * window () const
 Returns a pointer to the top-level window associated with this surface.
 
QBackingStore * backingStore () const
 Returns a pointer to the backing store associated with this surface.
 
virtual QPaintDevice * paintDevice ()=0
 Implement this function to return the appropriate paint device.
 
virtual void flush (QWindow *window, const QRegion &region, const QPoint &offset)
 Flushes the given region from the specified window.
 
virtual FlushResult rhiFlush (QWindow *window, qreal sourceDevicePixelRatio, const QRegion &region, const QPoint &offset, QPlatformTextureList *textures, bool translucentBackground)
 Flushes the given region from the specified window, and compositing it with the specified textures list.
 
virtual QImage toImage () const
 Implemented in subclasses to return the content of the backingstore as a QImage.
 
virtual QRhiTexture * toTexture (QRhiResourceUpdateBatch *resourceUpdates, const QRegion &dirtyRegion, TextureFlags *flags) const
 May be reimplemented in subclasses to return the content of the backingstore as an QRhiTexture.
 
virtual QPlatformGraphicsBuffer * graphicsBuffer () const
 Accessor for a backingstores graphics buffer abstraction.
 
virtual void resize (const QSize &size, const QRegion &staticContents)=0
 
virtual bool scroll (const QRegion &area, int dx, int dy)
 Scrolls the given area dx pixels to the right and dy downward; both dx and dy may be negative.
 
virtual void beginPaint (const QRegion &)
 This function is called before painting onto the surface begins, with the region in which the painting will occur.
 
virtual void endPaint ()
 This function is called after painting onto the surface has ended.
 
void setRhiConfig (const QPlatformBackingStoreRhiConfig &config)
 
QRhi * rhi () const
 
QRhiSwapChain * rhiSwapChain () const
 
void surfaceAboutToBeDestroyed ()
 
void graphicsDeviceReportedLost ()
 

Additional Inherited Members

- Public Types inherited from QPlatformBackingStore
enum  FlushResult { FlushSuccess , FlushFailed , FlushFailedDueToLostDevice }
 
enum  TextureFlag { TextureSwizzle = 0x01 , TextureFlip = 0x02 , TexturePremultiplied = 0x04 }
 
- Protected Member Functions inherited from QRasterBackingStore
virtual QImage::Format format () const
 
- Protected Attributes inherited from QRasterBackingStore
QImage m_image
 
QSize m_requestedSize
 

Detailed Description

Definition at line 22 of file qrhibackingstore_p.h.

Constructor & Destructor Documentation

◆ QRhiBackingStore()

QT_BEGIN_NAMESPACE QRhiBackingStore::QRhiBackingStore ( QWindow *  window)

Definition at line 8 of file qrhibackingstore.cpp.

◆ ~QRhiBackingStore()

QRhiBackingStore::~QRhiBackingStore ( )

Definition at line 13 of file qrhibackingstore.cpp.

Member Function Documentation

◆ flush()

void QRhiBackingStore::flush ( QWindow *  window,
const QRegion &  region,
const QPoint &  offset 
)
overridevirtual

Flushes the given region from the specified window.

Note
region is relative to the window which may not be top-level in case window corresponds to a native child widget. offset is the position of the native child relative to the top-level window.

Unlike rhiFlush(), this function's default implementation does nothing. It is expected that subclasses provide a platform-specific (non-QRhi-based) implementation, if applicable on the given platform.

See also
rhiFlush()

Reimplemented from QPlatformBackingStore.

Definition at line 17 of file qrhibackingstore.cpp.

References QImage::hasAlphaChannel(), QRasterBackingStore::m_image, QPlatformBackingStoreRhiConfig::Metal, QSurface::MetalSurface, QPlatformBackingStoreRhiConfig::OpenGL, QSurface::OpenGLSurface, Q_UNUSED, QPlatformBackingStore::rhi(), QPlatformBackingStore::rhiFlush(), QPlatformBackingStoreRhiConfig::setApi(), QPlatformBackingStoreRhiConfig::setEnabled(), QPlatformBackingStore::setRhiConfig(), QWindow::surfaceType(), and QPlatformBackingStore::window().

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