QLayer Class

class Qt3DRender::QLayer

The QLayer class provides a way of filtering which entities will be rendered. More...

Header: #include <QLayer>
qmake: QT += 3drender
Since: Qt 5.5
Instantiated By: Layer
Inherits: Qt3DCore::QComponent

This class was introduced in Qt 5.5.

Public Functions

QLayer(Qt3DCore::QNode *parent = nullptr)

Detailed Description

Qt3DRender::QLayer works in conjunction with the Qt3DRender::QLayerFilter in the FrameGraph.

A QLayer can be applied to a subtree of entities by setting the recursive property to true.

  #include <Qt3DCore/QEntity>
  #include <Qt3DRender/QGeometryRenderer>
  #include <Qt3DRender/QLayer>
  #include <Qt3DRender/QLayerFilter>
  #include <Qt3DRender/QViewport>

 // Scene
 Qt3DCore::QEntity *rootEntity = new Qt3DCore::Qt3DCore::QEntity;

 Qt3DCore::QEntity *renderableEntity = new Qt3DCore::Qt3DCore::QEntity(rootEntity);
 Qt3DRender::QGeometryRenderer *geometryRenderer = new Qt3DCore::QGeometryRenderer(renderableEntity);
 Qt3DRender::QLayer *layer1 = new Qt3DCore::QLayer(renderableEntity);
 layer1->setRecursive(true);
 renderableEntity->addComponent(geometryRenderer);
 renderableEntity->addComponent(layer1);

 ...

 // FrameGraph
 Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport;
 Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(viewport);
 layerFilter->addLayer(layer1);

 ...

See also Qt3DRender::QLayerFilter.

Member Function Documentation

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

Constructs a new QLayer with the specified parent.