QBuffer

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

Synopsis

Functions

• def accessType ()

• def data ()

• def dataGenerator ()

• def isSyncData ()

• def setData (bytes)

• def setDataGenerator (functor)

• def type ()

• def updateData (offset, bytes)

• def usage ()

Slots

• def setAccessType (access)

• def setSyncData (syncData)

• def setType (type)

• def setUsage (usage)

Signals

• def accessTypeChanged (access)

• def dataAvailable ()

• def dataChanged (bytes)

• def syncDataChanged (syncData)

• def typeChanged (type)

• def usageChanged (usage)

Detailed Description

Data can either be provided directly using setData() or by specifying a generator with setDataGenerator() and providing a QBufferDataGeneratorPtr .

When using a generator the data will be loaded asynchronously in a job. The loaded data can be read back if the syncData flag is set to true.

class PySide2.Qt3DRender.Qt3DRender.QBuffer([parent=None])

PySide2.Qt3DRender.Qt3DRender.QBuffer(ty[, parent=None])

Note

This constructor is deprecated.

param parent:

PySide2.Qt3DCore.Qt3DCore.QNode

param ty:

BufferType

Constructs a new QBuffer with parent .

Constructs a new QBuffer of buffer type ty with parent .

PySide2.Qt3DRender.Qt3DRender.QBuffer.BufferType

The type of the buffer.

Constant	Description
Qt3DRender.QBuffer.VertexBuffer	GL_ARRAY_BUFFER
Qt3DRender.QBuffer.IndexBuffer	GL_ELEMENT_ARRAY_BUFFER
Qt3DRender.QBuffer.PixelPackBuffer	GL_PIXEL_PACK_BUFFER
Qt3DRender.QBuffer.PixelUnpackBuffer	GL_PIXEL_UNPACK_BUFFER
Qt3DRender.QBuffer.UniformBuffer	GL_UNIFORM_BUFFER
Qt3DRender.QBuffer.ShaderStorageBuffer	GL_SHADER_STORAGE_BUFFER
Qt3DRender.QBuffer.DrawIndirectBuffer	GL_DRAW_INDIRECT_BUFFER

PySide2.Qt3DRender.Qt3DRender.QBuffer.UsageType

The type of the usage.

Constant	Description
Qt3DRender.QBuffer.StreamDraw	GL_STREAM_DRAW
Qt3DRender.QBuffer.StreamRead	GL_STREAM_READ
Qt3DRender.QBuffer.StreamCopy	GL_STREAM_COPY
Qt3DRender.QBuffer.StaticDraw	GL_STATIC_DRAW
Qt3DRender.QBuffer.StaticRead	GL_STATIC_READ
Qt3DRender.QBuffer.StaticCopy	GL_STATIC_COPY
Qt3DRender.QBuffer.DynamicDraw	GL_DYNAMIC_DRAW
Qt3DRender.QBuffer.DynamicRead	GL_DYNAMIC_READ
Qt3DRender.QBuffer.DynamicCopy	GL_DYNAMIC_COPY

PySide2.Qt3DRender.Qt3DRender.QBuffer.AccessType

Constant	Description
Qt3DRender.QBuffer.Write	Write access
Qt3DRender.QBuffer.Read	Read access
Qt3DRender.QBuffer.ReadWrite	Write|Read

PySide2.Qt3DRender.Qt3DRender.QBuffer.accessType()

Return type:

AccessType

Returns the AccessType of the buffer.

See also

AccessType

PySide2.Qt3DRender.Qt3DRender.QBuffer.accessTypeChanged(access)

Parameters:

access – AccessType

PySide2.Qt3DRender.Qt3DRender.QBuffer.data()

Return type:

PySide2.QtCore.QByteArray

Returns the data.

See also

setData()

PySide2.Qt3DRender.Qt3DRender.QBuffer.dataAvailable()

PySide2.Qt3DRender.Qt3DRender.QBuffer.dataChanged(bytes)

Parameters:

bytes – PySide2.QtCore.QByteArray

PySide2.Qt3DRender.Qt3DRender.QBuffer.dataGenerator()

Return type:

QSharedPointer

Note

This function is deprecated.

Returns the buffer functor.

See also

setDataGenerator()

PySide2.Qt3DRender.Qt3DRender.QBuffer.isSyncData()

Return type:

bool

Holds the flag. When is true, this will force data created by a QBufferDataGenerator to also be updated on the frontend QBuffer node. By default is false.

Note

: This has no effect if the buffer’s data was set directly using the data property.

PySide2.Qt3DRender.Qt3DRender.QBuffer.setAccessType(access)

Parameters:

access – AccessType

Returns the AccessType of the buffer.

See also

AccessType

PySide2.Qt3DRender.Qt3DRender.QBuffer.setData(bytes)

Parameters:

bytes – PySide2.QtCore.QByteArray

Sets bytes as data.

See also

data()

PySide2.Qt3DRender.Qt3DRender.QBuffer.setDataGenerator(functor)

Parameters:

functor – QSharedPointer

Note

This function is deprecated.

Sets the buffer functor .

See also

dataGenerator()

PySide2.Qt3DRender.Qt3DRender.QBuffer.setSyncData(syncData)

Parameters:

syncData – bool

Holds the flag. When is true, this will force data created by a QBufferDataGenerator to also be updated on the frontend QBuffer node. By default is false.

Note

: This has no effect if the buffer’s data was set directly using the data property.

PySide2.Qt3DRender.Qt3DRender.QBuffer.setType(type)

Parameters:

type – BufferType

Note

This function is deprecated.

Holds the buffer type.

PySide2.Qt3DRender.Qt3DRender.QBuffer.setUsage(usage)

Parameters:

usage – UsageType

Holds the buffer usage.

PySide2.Qt3DRender.Qt3DRender.QBuffer.syncDataChanged(syncData)

Parameters:

syncData – bool

PySide2.Qt3DRender.Qt3DRender.QBuffer.type()

Return type:

BufferType

Note

This function is deprecated.

Holds the buffer type.

PySide2.Qt3DRender.Qt3DRender.QBuffer.typeChanged(type)

Parameters:

type – BufferType

PySide2.Qt3DRender.Qt3DRender.QBuffer.updateData(offset, bytes)

Parameters:

• offset – int

• bytes – PySide2.QtCore.QByteArray

Updates the data by replacing it with bytes at offset .

PySide2.Qt3DRender.Qt3DRender.QBuffer.usage()

Return type:

UsageType

Holds the buffer usage.

PySide2.Qt3DRender.Qt3DRender.QBuffer.usageChanged(usage)

Parameters:

usage – UsageType