QAlphaCoverage

Enable alpha-to-coverage multisampling mode. More…

Detailed Description

A 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. 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 by calling 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 by calling 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);

See also

QMultiSampleAntiAliasing

class PySide6.Qt3DRender.Qt3DRender.QAlphaCoverage([parent=None])

Parameters

parent – PySide6.Qt3DCore.Qt3DCore.QNode

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