QBuffer¶

PyQt5.Qt3DRender.QBuffer

Inherits from QNode.

Description¶

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

Data can either be provided directly using setData() or by specifying a generator with QBuffer::setDataGenerator() and providing a Qt3DRender::QBufferDataGeneratorPtr.

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

Enums¶

AccessType

TODO

Member

Value

Description
Read

TODO

TODO
ReadWrite

TODO

TODO
Write

TODO

TODO
BufferType

The type of the buffer.

Member

Value

Description
DrawIndirectBuffer

0x8F3F

GL_DRAW_INDIRECT_BUFFER
IndexBuffer

0x8893

GL_ELEMENT_ARRAY_BUFFER
PixelPackBuffer

0x88EB

GL_PIXEL_PACK_BUFFER
PixelUnpackBuffer

0x88EC

GL_PIXEL_UNPACK_BUFFER
ShaderStorageBuffer

0x90D2

GL_SHADER_STORAGE_BUFFER
UniformBuffer

0x8A11

GL_UNIFORM_BUFFER
VertexBuffer

0x8892

GL_ARRAY_BUFFER
UsageType

The type of the usage.

Member

Value

Description
DynamicCopy

0x88EA

GL_DYNAMIC_COPY
DynamicDraw

0x88E8

GL_DYNAMIC_DRAW
DynamicRead

0x88E9

GL_DYNAMIC_READ
StaticCopy

0x88E6

GL_STATIC_COPY
StaticDraw

0x88E4

GL_STATIC_DRAW
StaticRead

0x88E5

GL_STATIC_READ
StreamCopy

0x88E2

GL_STREAM_COPY
StreamDraw

0x88E0

GL_STREAM_DRAW
StreamRead

0x88E1

GL_STREAM_READ

Methods¶

__init__(parent: QNode = None)

Constructs a new QBuffer with parent.

__init__(BufferType, parent: QNode = None)

Constructs a new QBuffer of buffer type ty with parent.

accessType() → AccessType

See also

setAccessType().

data() → QByteArray

Returns the data.

See also

setData().

dataGenerator() → QBufferDataGenerator

Returns the buffer functor.

See also

setDataGenerator().

isSyncData() → bool

TODO

sceneChangeEvent(QSceneChange)

TODO

setAccessType(AccessType)

See also

accessType().

setData(Union[QByteArray, bytes, bytearray])

Sets bytes as data.

See also

data().

setDataGenerator(QBufferDataGenerator)

Sets the buffer functor.

See also

dataGenerator().

setSyncData(bool)

See also

isSyncData().

setType(BufferType)

See also

type().

setUsage(UsageType)

See also

usage().

type() → BufferType

See also

setType().

updateData(int, Union[QByteArray, bytes, bytearray])

Updates the data by replacing it with bytes at offset.

usage() → UsageType

See also

setUsage().

Signals¶

accessTypeChanged(AccessType)

TODO

dataAvailable()

TODO

dataChanged(Union[QByteArray, bytes, bytearray])

TODO

syncDataChanged(bool)

TODO

typeChanged(BufferType)

TODO

usageChanged(UsageType)

TODO