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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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QNullSwapChainRenderTarget Struct Reference

#include <qrhinull_p.h>

Inheritance diagram for QNullSwapChainRenderTarget:
Collaboration diagram for QNullSwapChainRenderTarget:

Public Member Functions

 QNullSwapChainRenderTarget (QRhiImplementation *rhi, QRhiSwapChain *swapchain)
 ~QNullSwapChainRenderTarget ()
void destroy () override
 Releases (or requests deferred releasing of) the underlying native graphics resources.
QSize pixelSize () const override
float devicePixelRatio () const override
int sampleCount () const override
Public Member Functions inherited from QRhiSwapChainRenderTarget
QRhiResource::Type resourceType () const override
QRhiSwapChain * swapChain () const
Public Member Functions inherited from QRhiRenderTarget
QRhiRenderPassDescriptor * renderPassDescriptor () const
void setRenderPassDescriptor (QRhiRenderPassDescriptor *desc)
 Sets the QRhiRenderPassDescriptor desc for use with this render target.
Public Member Functions inherited from QRhiResource
virtual ~QRhiResource ()
 Destructor.
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

QNullRenderTargetData d

Additional Inherited Members

Public Types inherited from QRhiResource
enum  Type {
  Buffer , Texture , Sampler , RenderBuffer ,
  RenderPassDescriptor , SwapChainRenderTarget , TextureRenderTarget , ShaderResourceBindings ,
  GraphicsPipeline , SwapChain , ComputePipeline , CommandBuffer ,
  ShadingRateMap
}
 Specifies type of the resource. More...
Protected Member Functions inherited from QRhiSwapChainRenderTarget
 QRhiSwapChainRenderTarget (QRhiImplementation *rhi, QRhiSwapChain *swapchain_)
Protected Member Functions inherited from QRhiRenderTarget
 QRhiRenderTarget (QRhiImplementation *rhi)
Protected Member Functions inherited from QRhiResource
 QRhiResource (QRhiImplementation *rhi)
Protected Attributes inherited from QRhiSwapChainRenderTarget
QRhiSwapChain * m_swapchain
Protected Attributes inherited from QRhiRenderTarget
QRhiRenderPassDescriptor * m_renderPassDesc = nullptr
Protected Attributes inherited from QRhiResource
QRhiImplementation * m_rhi = nullptr
quint64 m_id
QByteArray m_objectName

Detailed Description

Definition at line 90 of file qrhinull_p.h.

Constructor & Destructor Documentation

◆ QNullSwapChainRenderTarget()

QNullSwapChainRenderTarget::QNullSwapChainRenderTarget ( QRhiImplementation * rhi,
QRhiSwapChain * swapchain )

Definition at line 812 of file qrhinull.cpp.

References QNullSwapChainRenderTarget().

Referenced by QNullSwapChainRenderTarget().

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◆ ~QNullSwapChainRenderTarget()

QNullSwapChainRenderTarget::~QNullSwapChainRenderTarget ( )

Definition at line 818 of file qrhinull.cpp.

References destroy().

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Member Function Documentation

◆ destroy()

void QNullSwapChainRenderTarget::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 823 of file qrhinull.cpp.

Referenced by ~QNullSwapChainRenderTarget().

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◆ devicePixelRatio()

float QNullSwapChainRenderTarget::devicePixelRatio ( ) const
overridevirtual
Returns
the device pixel ratio. For QRhiTextureRenderTarget this is always
  1. For targets retrieved from a QRhiSwapChain the value reflects the \l{QWindow::devicePixelRatio()}{device pixel ratio} of the targeted QWindow.

Implements QRhiRenderTarget.

Definition at line 832 of file qrhinull.cpp.

◆ pixelSize()

QSize QNullSwapChainRenderTarget::pixelSize ( ) const
overridevirtual
Returns
the size in pixels.

Valid only after create() has been called successfully. Until then the result is a default-constructed QSize.

With QRhiTextureRenderTarget the returned size is the size of the associated attachments at the time of create(), in practice the size of the first color attachment, or the depth/stencil buffer if there are no color attachments. If the associated textures or renderbuffers are resized and rebuilt afterwards, then pixelSize() performs an implicit call to create() in order to rebuild the underlying data structures. This implicit check is similar to what QRhiCommandBuffer::beginPass() does, and ensures that the returned size is always up-to-date.

Implements QRhiRenderTarget.

Definition at line 827 of file qrhinull.cpp.

◆ sampleCount()

int QNullSwapChainRenderTarget::sampleCount ( ) const
overridevirtual
Returns
the sample count or 1 if multisample antialiasing is not relevant for this render target.

Implements QRhiRenderTarget.

Definition at line 837 of file qrhinull.cpp.

Member Data Documentation

◆ d

QNullRenderTargetData QNullSwapChainRenderTarget::d

Definition at line 100 of file qrhinull_p.h.

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