Qt3DCore::QBuffer Class

class Qt3DCore::QBuffer

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

頭：	`#include <Qt3DCore/QBuffer>`
CMake:	`find_package(Qt6 REQUIRED COMPONENTS 3DCore)` `target_link_libraries(mytarget PRIVATE Qt6::3DCore)`
qmake:	`QT += 3dcore`
在 QML：	Buffer
繼承：	Qt3DCore::QNode
狀態：	棄用

所有成員列錶，包括繼承成員

公共類型

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

特性

accessType : AccessType
usage : UsageType

公共函數

	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 )

信號

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

詳細描述

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

成員類型文檔編製

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

特性文檔編製

accessType : AccessType

返迴 AccessType of the buffer.

訪問函數：

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

通知程序信號：

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

另請參閱 QBuffer::AccessType .

usage : UsageType

Holds the buffer usage.

訪問函數：

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

通知程序信號：

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

成員函數文檔編製

`[explicit]` QBuffer:: QBuffer ( Qt3DCore::QNode * parent = nullptr)

Constructs a new QBuffer with parent .

QByteArray QBuffer:: data () const

Returns the data.

另請參閱 setData ().

`[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.

void QBuffer:: setData (const QByteArray & bytes )

設置 bytes as data.

另請參閱 data ().

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

Updates the data by replacing it with bytes at offset .

注意： 此函數可以被援引，通過元對象係統和從 QML。見 Q_INVOKABLE .