QAlphaCoverage Class

Enable alpha-to-coverage multisampling mode. 更多...

头：	#include <QAlphaCoverage>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	AlphaCoverage
继承：	Qt3DRender::QRenderState

公共函数

QAlphaCoverage (Qt3DCore::QNode * parent = nullptr)

13 公共函数继承自 Qt3DCore::QNode
31 公共函数继承自 QObject

静态公共成员

const QMetaObject

staticMetaObject

9 静态公共成员继承自 QObject

额外继承成员

3 特性继承自 Qt3DCore::QNode
1 特性继承自 QObject
3 公共槽继承自 Qt3DCore::QNode
1 公共槽继承自 QObject
4 信号继承自 Qt3DCore::QNode
2 信号继承自 QObject
2 保护函数继承自 Qt3DCore::QNode
9 保护函数继承自 QObject

详细描述

Enable alpha-to-coverage multisampling mode.

A Qt3DRender::QAlphaCoverage class enables alpha-to-coverage multisampling mode. When enabled, the fragment alpha value is used as a coverage for the sample and combined with fragment coverage value. Qt3DRender::QAlphaCoverage does nothing if multisampling is disabled. Alpha-to-coverage is most useful when order independent blending is required, for example when rendering leaves, grass and other rich vegetation.

It can be added to a QRenderPass 通过调用 QRenderPass::addRenderState ():

QRenderPass *renderPass = new QRenderPass();
// Create a alpha coverage render state
QAlphaCoverage *alphaCoverage = new QAlphaCoverage();
QMultiSampleAntiAliasing *multiSampleAntialiasing = new QMultiSampleAntiAliasing();
// Add the render states to the render pass
renderPass->addRenderState(alphaCoverage);
renderPass->addRenderState(multiSampleAntialiasing);

Or to a QRenderStateSet 通过调用 QRenderStateSet::addRenderState ():

QRenderStateSet *renderStateSet = new QRenderStateSet();
// Create a alpha coverage render state
QAlphaCoverage *alphaCoverage = new QAlphaCoverage();
QMultiSampleAntiAliasing *multiSampleAntialiasing = new QMultiSampleAntiAliasing();
// Add the render states to the render state set
renderStateSet->addRenderState(alphaCoverage);
renderStateSet->addRenderState(multiSampleAntialiasing);

另请参阅 Qt3DRender::QMultiSampleAntiAliasing .

成员函数文档编制

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

The constructor creates a new QAlphaCoverage::QAlphaCoverage instance with the specified parent .