QAlphaCoverage — PyQt Documentation v6.9.0 (original) (raw)

PyQt6.Qt3DRender.QAlphaCoverage

Inherits from QRenderState.

Description¶

Enable alpha-to-coverage multisampling mode.

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 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 by calling 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);

Methods¶

__init__(parent: QNode = None)

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