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公共类型
特性
公共函数
公共槽
信号
详细描述

QBuffer 类

class Qt3DCore ::QBuffer

Provides a data store for raw data to later be used as vertices or uniforms. 更多...

头：	#include <Qt3DCore/QBuffer>
CMake:	find_package(Qt6 COMPONENTS 3dcore REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::3dcore)
qmake:	QT += 3dcore
实例化：	Buffer
继承：	Qt3DCore::QNode

所有成员列表，包括继承成员

公共类型

enum	AccessType { Write, Read, ReadWrite }
enum	UsageType { StreamDraw, StreamRead, StreamCopy, StaticDraw, StaticRead, …, DynamicCopy }

特性

accessType : AccessType
usage : UsageType

公共函数

	QBuffer (Qt3DCore::QNode * parent = nullptr)
Qt3DCore::QBuffer::AccessType	accessType () const
QByteArray	data () const
void	setData (const QByteArray & bytes )
void	updateData (int offset , const QByteArray & bytes )
Qt3DCore::QBuffer::UsageType	usage () const

公共槽

void	setAccessType (Qt3DCore::QBuffer::AccessType access )
void	setUsage (Qt3DCore::QBuffer::UsageType usage )

信号

void	accessTypeChanged (Qt3DCore::QBuffer::AccessType access )
void	dataAvailable ()
void	dataChanged (const QByteArray & bytes )
void	usageChanged (Qt3DCore::QBuffer::UsageType usage )

详细描述

Data can be provided directly using QBuffer::setData ().

成员类型文档编制

enum QBuffer:: AccessType

常量	值	描述
`Qt3DCore::QBuffer::Write`	`0x1`	Write access
`Qt3DCore::QBuffer::Read`	`0x2`	Read access
`Qt3DCore::QBuffer::ReadWrite`	`Write\|Read`	Write\|Read

enum QBuffer:: UsageType

The type of the usage.

常量	值	描述
`Qt3DCore::QBuffer::StreamDraw`	`0x88E0`	GL_STREAM_DRAW
`Qt3DCore::QBuffer::StreamRead`	`0x88E1`	GL_STREAM_READ
`Qt3DCore::QBuffer::StreamCopy`	`0x88E2`	GL_STREAM_COPY
`Qt3DCore::QBuffer::StaticDraw`	`0x88E4`	GL_STATIC_DRAW
`Qt3DCore::QBuffer::StaticRead`	`0x88E5`	GL_STATIC_READ
`Qt3DCore::QBuffer::StaticCopy`	`0x88E6`	GL_STATIC_COPY
`Qt3DCore::QBuffer::DynamicDraw`	`0x88E8`	GL_DYNAMIC_DRAW
`Qt3DCore::QBuffer::DynamicRead`	`0x88E9`	GL_DYNAMIC_READ
`Qt3DCore::QBuffer::DynamicCopy`	`0x88EA`	GL_DYNAMIC_COPY

特性文档编制

accessType : AccessType

返回 AccessType of the buffer.

访问函数：

Qt3DCore::QBuffer::AccessType	accessType () const
void	setAccessType (Qt3DCore::QBuffer::AccessType access )

通知程序信号：

void	accessTypeChanged (Qt3DCore::QBuffer::AccessType access )

另请参阅 QBuffer::AccessType .

usage : UsageType

Holds the buffer usage.

访问函数：

Qt3DCore::QBuffer::UsageType	usage () const
void	setUsage (Qt3DCore::QBuffer::UsageType usage )

通知程序信号：

void	usageChanged (Qt3DCore::QBuffer::UsageType usage )

成员函数文档编制

QBuffer:: QBuffer ( Qt3DCore::QNode * parent = nullptr)

Constructs a new QBuffer with parent .

`[signal]` void QBuffer:: dataAvailable ()

This signal is emitted when data becomes available.

`[signal]` void QBuffer:: dataChanged (const QByteArray & bytes )

This signal is emitted with bytes when data changes.

QByteArray QBuffer:: data () const

Returns the data.

另请参阅 setData ().

void QBuffer:: setData (const QByteArray & bytes )

设置 bytes as data.

另请参阅 data ().

`[invokable]` void QBuffer:: updateData ( int offset , const QByteArray & bytes )

Updates the data by replacing it with bytes at offset .

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .

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