QAttribute¶

Defines an attribute and how data should be read from a QBuffer . More…

Synopsis¶

Functions¶

def attributeType ()
def buffer ()
def byteOffset ()
def byteStride ()
def count ()
def divisor ()
def name ()
def vertexBaseType ()
def vertexSize ()

Slots¶

def setAttributeType (attributeType)
def setBuffer (buffer)
def setByteOffset (byteOffset)
def setByteStride (byteStride)
def setCount (count)
def setDivisor (divisor)
def setName (name)
def setVertexBaseType (type)
def setVertexSize (size)

Signals¶

def attributeTypeChanged (attributeType)
def bufferChanged (buffer)
def byteOffsetChanged (byteOffset)
def byteStrideChanged (byteStride)
def countChanged (count)
def dataSizeChanged (vertexSize)
def dataTypeChanged (vertexBaseType)
def divisorChanged (divisor)
def nameChanged (name)
def vertexBaseTypeChanged (vertexBaseType)
def vertexSizeChanged (vertexSize)

Static functions¶

def defaultColorAttributeName ()
def defaultJointIndicesAttributeName ()
def defaultJointWeightsAttributeName ()
def defaultNormalAttributeName ()
def defaultPositionAttributeName ()
def defaultTangentAttributeName ()
def defaultTextureCoordinate1AttributeName ()
def defaultTextureCoordinate2AttributeName ()
def defaultTextureCoordinateAttributeName ()

Detailed Description¶

There are 3 types of attributes.

VertexAttribute : used to define data to be read on a per vertex basis

IndexAttribute : used to define vertex indices when indexed draw calls are to be used

DrawIndirectAttribute : used to specify the DrawIndirect buffer to be used when indirect draw calls are to be used

Note

when an attribute is of type DrawIndirectAttribute , only count, stride and offset are relevant.

When providing your own attributes, it may make sense to name your attribute using helpers such as defaultPositionAttributeName() as that will ensure your geometry will be compatible with picking and the various materials provided in the Qt3DExtras module.

See also

QBuffer

class PySide6.Qt3DCore.Qt3DCore.QAttribute(buf, vertexBaseType, vertexSize, count[, offset=0[, stride=0[, parent=None]]])¶

PySide6.Qt3DCore.Qt3DCore.QAttribute(buf, name, vertexBaseType, vertexSize, count[, offset=0[, stride=0[, parent=None]]])

PySide6.Qt3DCore.Qt3DCore.QAttribute([parent=None])

Parameters

offset – uint
vertexSize – uint
name – str
count – uint
buf – PySide6.Qt3DCore.Qt3DCore.QBuffer
vertexBaseType – VertexBaseType
stride – uint
parent – PySide6.Qt3DCore.Qt3DCore.QNode

Constructs a new QAttribute from buf of type, dataSize, count, offset, and stride with parent.

Constructs a new QAttribute named name from buf of type, dataSize, count, offset, and stride with parent.

Constructs a new QAttribute with parent.

PySide6.Qt3DCore.Qt3DCore.QAttribute.AttributeType¶

The type of the attribute.

Constant

Description

Qt3DCore.QAttribute.VertexAttribute

Qt3DCore.QAttribute.IndexAttribute

Qt3DCore.QAttribute.DrawIndirectAttribute

PySide6.Qt3DCore.Qt3DCore.QAttribute.VertexBaseType¶

The type of the data.

Constant

Description

Qt3DCore.QAttribute.Byte

Qt3DCore.QAttribute.UnsignedByte

Qt3DCore.QAttribute.Short

Qt3DCore.QAttribute.UnsignedShort

Qt3DCore.QAttribute.Int

Qt3DCore.QAttribute.UnsignedInt

Qt3DCore.QAttribute.HalfFloat

Qt3DCore.QAttribute.Float

Qt3DCore.QAttribute.Double

PySide6.Qt3DCore.Qt3DCore.QAttribute.attributeType()¶

Return type: AttributeType

Holds the attribute type.

PySide6.Qt3DCore.Qt3DCore.QAttribute.attributeTypeChanged(attributeType)¶

Parameters: attributeType – AttributeType

PySide6.Qt3DCore.Qt3DCore.QAttribute.buffer()¶

Return type: PySide6.Qt3DCore.Qt3DCore.QBuffer

Holds the buffer.

PySide6.Qt3DCore.Qt3DCore.QAttribute.bufferChanged(buffer)¶

Parameters: buffer – PySide6.Qt3DCore.Qt3DCore.QBuffer

PySide6.Qt3DCore.Qt3DCore.QAttribute.byteOffset()¶

Return type: uint

Holds the byte offset.

PySide6.Qt3DCore.Qt3DCore.QAttribute.byteOffsetChanged(byteOffset)¶

Parameters: byteOffset – uint

PySide6.Qt3DCore.Qt3DCore.QAttribute.byteStride()¶

Return type: uint

Holds the byte stride.

PySide6.Qt3DCore.Qt3DCore.QAttribute.byteStrideChanged(byteStride)¶

Parameters: byteStride – uint

PySide6.Qt3DCore.Qt3DCore.QAttribute.count()¶

Return type: uint

Holds the count.

PySide6.Qt3DCore.Qt3DCore.QAttribute.countChanged(count)¶

Parameters: count – uint

PySide6.Qt3DCore.Qt3DCore.QAttribute.dataSizeChanged(vertexSize)¶

Parameters: vertexSize – uint

PySide6.Qt3DCore.Qt3DCore.QAttribute.dataTypeChanged(vertexBaseType)¶

Parameters: vertexBaseType – VertexBaseType

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultColorAttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultJointIndicesAttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultJointWeightsAttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultNormalAttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultPositionAttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultTangentAttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultTextureCoordinate1AttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultTextureCoordinate2AttributeName()¶

Return type: str

static PySide6.Qt3DCore.Qt3DCore.QAttribute.defaultTextureCoordinateAttributeName()¶

Return type: str

PySide6.Qt3DCore.Qt3DCore.QAttribute.divisor()¶

Return type: uint

Holds the divisor.

PySide6.Qt3DCore.Qt3DCore.QAttribute.divisorChanged(divisor)¶

Parameters: divisor – uint

PySide6.Qt3DCore.Qt3DCore.QAttribute.name()¶

Return type: str

Holds the name.

PySide6.Qt3DCore.Qt3DCore.QAttribute.nameChanged(name)¶

Parameters: name – str

PySide6.Qt3DCore.Qt3DCore.QAttribute.setAttributeType(attributeType)¶

Parameters: attributeType – AttributeType

Holds the attribute type.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setBuffer(buffer)¶

Parameters: buffer – PySide6.Qt3DCore.Qt3DCore.QBuffer

Holds the buffer.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setByteOffset(byteOffset)¶

Parameters: byteOffset – uint

Holds the byte offset.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setByteStride(byteStride)¶

Parameters: byteStride – uint

Holds the byte stride.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setCount(count)¶

Parameters: count – uint

Holds the count.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setDivisor(divisor)¶

Parameters: divisor – uint

Holds the divisor.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setName(name)¶

Parameters: name – str

Holds the name.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setVertexBaseType(type)¶

Parameters: type – VertexBaseType

Holds the data type.

PySide6.Qt3DCore.Qt3DCore.QAttribute.setVertexSize(size)¶

Parameters: size – uint

Holds the data size, it can only be 1 to 4 units (scalars and vectors), 9 units (3x3 matrices) or 16 units (4x4 matrices).

PySide6.Qt3DCore.Qt3DCore.QAttribute.vertexBaseType()¶

Return type: VertexBaseType

Holds the data type.

PySide6.Qt3DCore.Qt3DCore.QAttribute.vertexBaseTypeChanged(vertexBaseType)¶

Parameters: vertexBaseType – VertexBaseType

PySide6.Qt3DCore.Qt3DCore.QAttribute.vertexSize()¶

Return type: uint

Holds the data size, it can only be 1 to 4 units (scalars and vectors), 9 units (3x3 matrices) or 16 units (4x4 matrices).

PySide6.Qt3DCore.Qt3DCore.QAttribute.vertexSizeChanged(vertexSize)¶

Parameters: vertexSize – uint

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