#include <qrhimetal_p.h>

Inheritance diagram for QMetalShadingRateMap:

Collaboration diagram for QMetalShadingRateMap:

Public Member Functions
	QMetalShadingRateMap (QRhiImplementation *rhi)
	~QMetalShadingRateMap ()
void	destroy () override
	Releases (or requests deferred releasing of) the underlying native graphics resources.
bool	createFrom (NativeShadingRateMap src) override
	Sets up the shading rate map to use a native 3D API shading rate object src.
Public Member Functions inherited from QRhiShadingRateMap
QRhiResource::Type	resourceType () const override
virtual bool	createFrom (QRhiTexture *src)
	Sets up the shading rate map to use the texture src as the image containing the per-tile shading rates.
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
QMetalShadingRateMapData *	d
uint	generation = 0
int	lastActiveFrameSlot = -1

Friends
class	QRhiMetal

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 QRhiShadingRateMap
	QRhiShadingRateMap (QRhiImplementation *rhi)
	\variable QRhiShadingRateMap::NativeShadingRateMap::object
Protected Member Functions inherited from QRhiResource
	QRhiResource (QRhiImplementation *rhi)
Protected Attributes inherited from QRhiResource
QRhiImplementation *	m_rhi = nullptr
quint64	m_id
QByteArray	m_objectName

Detailed Description

Definition at line 110 of file qrhimetal_p.h.

Constructor & Destructor Documentation

◆ QMetalShadingRateMap()

QMetalShadingRateMap::QMetalShadingRateMap ( QRhiImplementation * rhi )

Definition at line 4159 of file qrhimetal.mm.

References QMetalShadingRateMap(), and d.

Referenced by QMetalShadingRateMap().

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◆ ~QMetalShadingRateMap()

QMetalShadingRateMap::~QMetalShadingRateMap ( )

Definition at line 4165 of file qrhimetal.mm.

References d, and destroy().

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Member Function Documentation

◆ createFrom()

bool QMetalShadingRateMap::createFrom ( NativeShadingRateMap src )

overridevirtual

Sets up the shading rate map to use a native 3D API shading rate object src.

Returns: true when successful, false when not supported.

Note: This is functional only when the QRhi::VariableRateShadingMap feature is reported as supported, while QRhi::VariableShadingRateMapWithTexture feature is not. Currently this is true for Metal, assuming variable rate shading is supported by the GPU.; With Metal, the object field of src is expected to contain an id<MTLRasterizationRateMap>. Note that Qt does not perform anything else apart from passing the MTLRasterizationRateMap on to the MTLRenderPassDescriptor. If any special scaling is required, it is up to the application (or the XR compositor) to perform that.

Reimplemented from QRhiShadingRateMap.

Definition at line 4190 of file qrhimetal.mm.

References d, destroy(), and lastActiveFrameSlot.

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◆ destroy()

void QMetalShadingRateMap::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.