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 setDataSize (size)
def setDataType (type)
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 PySide2.Qt3DRender.Qt3DRender.QAttribute([parent=None])¶

PySide2.Qt3DRender.Qt3DRender.QAttribute(buf, vertexBaseType, vertexSize, count[, offset=0[, stride=0[, parent=None]]])

PySide2.Qt3DRender.Qt3DRender.QAttribute(buf, name, vertexBaseType, vertexSize, count[, offset=0[, stride=0[, parent=None]]])

param parent:

PySide2.Qt3DCore.Qt3DCore.QNode

param vertexBaseType:

VertexBaseType

param buf:

PySide2.Qt3DRender.Qt3DRender.QBuffer

param offset:

uint

param name:

str

param stride:

uint

param count:

uint

param vertexSize:

uint

Constructs a new QAttribute with parent .

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 .

PySide2.Qt3DRender.Qt3DRender.QAttribute.AttributeType¶

The type of the attribute.

Constant	Description
Qt3DRender.QAttribute.VertexAttribute
Qt3DRender.QAttribute.IndexAttribute
Qt3DRender.QAttribute.DrawIndirectAttribute

PySide2.Qt3DRender.Qt3DRender.QAttribute.VertexBaseType¶

The type of the data.

Constant	Description
Qt3DRender.QAttribute.Byte
Qt3DRender.QAttribute.UnsignedByte
Qt3DRender.QAttribute.Short
Qt3DRender.QAttribute.UnsignedShort
Qt3DRender.QAttribute.Int
Qt3DRender.QAttribute.UnsignedInt
Qt3DRender.QAttribute.HalfFloat
Qt3DRender.QAttribute.Float
Qt3DRender.QAttribute.Double

PySide2.Qt3DRender.Qt3DRender.QAttribute.attributeType()¶

Return type:: AttributeType

Holds the attribute type.

PySide2.Qt3DRender.Qt3DRender.QAttribute.attributeTypeChanged(attributeType)¶

Parameters:: attributeType – AttributeType

PySide2.Qt3DRender.Qt3DRender.QAttribute.buffer()¶

Return type:: PySide2.Qt3DRender.Qt3DRender.QBuffer

Holds the buffer.

PySide2.Qt3DRender.Qt3DRender.QAttribute.bufferChanged(buffer)¶

Parameters:: buffer – PySide2.Qt3DRender.Qt3DRender.QBuffer

PySide2.Qt3DRender.Qt3DRender.QAttribute.byteOffset()¶

Return type:: uint

Holds the byte offset.

PySide2.Qt3DRender.Qt3DRender.QAttribute.byteOffsetChanged(byteOffset)¶

Parameters:: byteOffset – uint

PySide2.Qt3DRender.Qt3DRender.QAttribute.byteStride()¶

Return type:: uint

Holds the byte stride.

PySide2.Qt3DRender.Qt3DRender.QAttribute.byteStrideChanged(byteStride)¶

Parameters:: byteStride – uint

PySide2.Qt3DRender.Qt3DRender.QAttribute.count()¶

Return type:: uint

Holds the count.

PySide2.Qt3DRender.Qt3DRender.QAttribute.countChanged(count)¶

Parameters:: count – uint

PySide2.Qt3DRender.Qt3DRender.QAttribute.dataSizeChanged(vertexSize)¶

Parameters:: vertexSize – uint

PySide2.Qt3DRender.Qt3DRender.QAttribute.dataTypeChanged(vertexBaseType)¶

Parameters:: vertexBaseType – VertexBaseType

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultColorAttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultJointIndicesAttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultJointWeightsAttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultNormalAttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultPositionAttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultTangentAttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultTextureCoordinate1AttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultTextureCoordinate2AttributeName()¶

Return type:: str

static PySide2.Qt3DRender.Qt3DRender.QAttribute.defaultTextureCoordinateAttributeName()¶

Return type:: str

PySide2.Qt3DRender.Qt3DRender.QAttribute.divisor()¶

Return type:: uint

Holds the divisor.

PySide2.Qt3DRender.Qt3DRender.QAttribute.divisorChanged(divisor)¶

Parameters:: divisor – uint

PySide2.Qt3DRender.Qt3DRender.QAttribute.name()¶

Return type:: str

Holds the name.

PySide2.Qt3DRender.Qt3DRender.QAttribute.nameChanged(name)¶

Parameters:: name – str

PySide2.Qt3DRender.Qt3DRender.QAttribute.setAttributeType(attributeType)¶

Parameters:: attributeType – AttributeType

Holds the attribute type.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setBuffer(buffer)¶

Parameters:: buffer – PySide2.Qt3DRender.Qt3DRender.QBuffer

Holds the buffer.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setByteOffset(byteOffset)¶

Parameters:: byteOffset – uint

Holds the byte offset.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setByteStride(byteStride)¶

Parameters:: byteStride – uint

Holds the byte stride.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setCount(count)¶

Parameters:: count – uint

Holds the count.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setDataSize(size)¶

Parameters:: size – uint

Note

This function is deprecated.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setDataType(type)¶

Parameters:: type – VertexBaseType

Note

This function is deprecated.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setDivisor(divisor)¶

Parameters:: divisor – uint

Holds the divisor.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setName(name)¶

Parameters:: name – str

Holds the name.

PySide2.Qt3DRender.Qt3DRender.QAttribute.setVertexBaseType(type)¶

Parameters:: type – VertexBaseType

Holds the data type.

PySide2.Qt3DRender.Qt3DRender.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).

PySide2.Qt3DRender.Qt3DRender.QAttribute.vertexBaseType()¶

Return type:: VertexBaseType

Holds the data type.

PySide2.Qt3DRender.Qt3DRender.QAttribute.vertexBaseTypeChanged(vertexBaseType)¶

Parameters:: vertexBaseType – VertexBaseType

PySide2.Qt3DRender.Qt3DRender.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).

PySide2.Qt3DRender.Qt3DRender.QAttribute.vertexSizeChanged(vertexSize)¶

Parameters:: vertexSize – uint

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