Qt Documentation

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QPolygonOffset Class

(Qt3DRender::QPolygonOffset)

The QPolygonOffset class sets the scale and steps to calculate depth values for polygon offsets. More...

Header: #include <QPolygonOffset>
qmake: QT += 3drender
Since: Qt 5.7
Instantiated By: PolygonOffset
Inherits: Qt3DRender::QRenderState

This class was introduced in Qt 5.7.

Properties

Public Functions

QPolygonOffset(Qt3DCore::QNode *parent = nullptr)
float depthSteps() const
float scaleFactor() const

Public Slots

void setDepthSteps(float depthSteps)
void setScaleFactor(float scaleFactor)

Signals

void depthStepsChanged(float depthSteps)
void scaleFactorChanged(float scaleFactor)

Detailed Description

A QPolygonOffset class adds an offset to the fragment depth value prior to depth test and depth write. The offset can be used to avoid z-fighting when rendering polygons with very close depth values such as decals.

Property Documentation

depthSteps : float

Holds the units that create constant depth offsets. Default value is 0.

Access functions:

float depthSteps() const
void setDepthSteps(float depthSteps)

Notifier signal:

void depthStepsChanged(float depthSteps)

scaleFactor : float

Holds the scale factor used to create a variable depth offset for each polygon. Default value is 0.

Access functions:

float scaleFactor() const
void setScaleFactor(float scaleFactor)

Notifier signal:

void scaleFactorChanged(float scaleFactor)

Member Function Documentation

QPolygonOffset::QPolygonOffset(Qt3DCore::QNode *parent = nullptr)

The constructor creates a new QPolygonOffset::QPolygonOffset instance with the specified parent

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