Qt3DRender.QAlphaCoverage ¶

详细描述 ¶

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 通过调用 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 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

QMultiSampleAntiAliasing

class PySide2.Qt3DRender.Qt3DRender. QAlphaCoverage ( [ parent=None ] ) ¶

param parent

QNode

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