QNullRenderBuffer Struct Reference

#include <qrhinull_p.h>

Inheritance diagram for QNullRenderBuffer:

Collaboration diagram for QNullRenderBuffer:

Public Member Functions
	QNullRenderBuffer (QRhiImplementation *rhi, Type type, const QSize &pixelSize, int sampleCount, QRhiRenderBuffer::Flags flags, QRhiTexture::Format backingFormatHint)
	~QNullRenderBuffer ()
void	destroy () override
	Releases (or requests deferred releasing of) the underlying native graphics resources.
bool	create () override
	Creates the corresponding native graphics resources.
QRhiTexture::Format	backingFormat () const override
Public Member Functions inherited from QRhiRenderBuffer
QRhiResource::Type	resourceType () const override
Type	type () const
void	setType (Type t)
	Sets the type to t.
QSize	pixelSize () const
void	setPixelSize (const QSize &sz)
	Sets the size (in pixels) to sz.
int	sampleCount () const
void	setSampleCount (int s)
	Sets the sample count to s.
Flags	flags () const
void	setFlags (Flags f)
	Sets the flags to f.
virtual bool	create ()=0
	Creates the corresponding native graphics resources.
virtual bool	createFrom (NativeRenderBuffer src)
	Similar to create() except that no new native renderbuffer objects are created.
virtual QRhiTexture::Format	backingFormat () const =0
Public Member Functions inherited from QRhiResource
virtual	~QRhiResource ()
	Destructor.
virtual Type	resourceType () const =0
virtual void	destroy ()=0
	Releases (or requests deferred releasing of) the underlying native graphics resources.
void	deleteLater ()
	When called without a frame being recorded, this function is equivalent to deleting the object.
QByteArray	name () const
void	setName (const QByteArray &name)
	Sets a name for the object.
quint64	globalResourceId () const
QRhi *	rhi () const

Public Attributes
bool	valid = false
uint	generation = 0

Additional Inherited Members
Public Types inherited from QRhiRenderBuffer
enum	Type { DepthStencil , Color }
	Specifies the type of the renderbuffer. More...
enum	Flag { UsedWithSwapChainOnly = 1 << 0 }
	\variable QRhiRenderBuffer::NativeRenderBuffer::object More...
Public Types inherited from QRhiResource
enum	Type {   Buffer , Texture , Sampler , RenderBuffer ,   RenderPassDescriptor , SwapChainRenderTarget , TextureRenderTarget , ShaderResourceBindings ,   GraphicsPipeline , SwapChain , ComputePipeline , CommandBuffer }
	Specifies type of the resource. More...
Protected Member Functions inherited from QRhiRenderBuffer
	QRhiRenderBuffer (QRhiImplementation *rhi, Type type_, const QSize &pixelSize_, int sampleCount_, Flags flags_, QRhiTexture::Format backingFormatHint_)
Protected Member Functions inherited from QRhiResource
	QRhiResource (QRhiImplementation *rhi)
Protected Attributes inherited from QRhiRenderBuffer
Type	m_type
QSize	m_pixelSize
int	m_sampleCount
Flags	m_flags
QRhiTexture::Format	m_backingFormatHint
Protected Attributes inherited from QRhiResource
QRhiImplementation *	m_rhi = nullptr
quint64	m_id
QByteArray	m_objectName

Detailed Description

Definition at line 33 of file qrhinull_p.h.

Constructor & Destructor Documentation

QNullRenderBuffer()

QNullRenderBuffer::QNullRenderBuffer	(	QRhiImplementation *	rhi,
		Type	type,
		const QSize &	pixelSize,
		int	sampleCount,
		QRhiRenderBuffer::Flags	flags,
		QRhiTexture::Format	backingFormatHint
	)

Definition at line 604 of file qrhinull.cpp.

~QNullRenderBuffer()

QNullRenderBuffer::~QNullRenderBuffer

(

)

Definition at line 611 of file qrhinull.cpp.

References destroy().

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Member Function Documentation

backingFormat()

QRhiTexture::Format QNullRenderBuffer::backingFormat ( ) const

overridevirtual

Implements QRhiRenderBuffer.

Definition at line 639 of file qrhinull.cpp.

References QRhiRenderBuffer::Color, QRhiRenderBuffer::m_type, QRhiTexture::RGBA8, and QRhiTexture::UnknownFormat.

create()

bool QNullRenderBuffer::create ( )

overridevirtual

Creates the corresponding native graphics resources.

If there are already resources present due to an earlier create() with no corresponding destroy(), then destroy() is called implicitly first.

Returns

true when successful, false when a graphics operation failed. Regardless of the return value, calling destroy() is always safe.

Implements QRhiRenderBuffer.

Definition at line 625 of file qrhinull.cpp.

References destroy(), generation, QRHI_RES_RHI, and valid.

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destroy()

void QNullRenderBuffer::destroy ( )

overridevirtual

Releases (or requests deferred releasing of) the underlying native graphics resources.

Safe to call multiple times, subsequent invocations will be a no-op then.

Once destroy() is called, the QRhiResource instance can be reused, by calling create() again. That will then result in creating new native graphics resources underneath.

Note

Resources referenced by commands for the current frame should not be released until the frame is submitted by QRhi::endFrame().

The QRhiResource destructor also performs the same task, so calling this function is not necessary before deleting a QRhiResource.

See also

deleteLater()

Implements QRhiResource.

Definition at line 616 of file qrhinull.cpp.

References QRHI_RES_RHI, and valid.

Referenced by ~QNullRenderBuffer(), and create().

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Member Data Documentation

generation

uint QNullRenderBuffer::generation = 0

Definition at line 44 of file qrhinull_p.h.

Referenced by create().

valid

bool QNullRenderBuffer::valid = false

Definition at line 43 of file qrhinull_p.h.

Referenced by create(), and destroy().

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

• qtbase/src/gui/rhi/qrhinull_p.h
• qtbase/src/gui/rhi/qrhinull.cpp