QAlphaTest Class▲
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Header: QAlphaTest
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Since: Qt 5.7
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CMake:
find_package(Qt6 REQUIRED COMPONENTS 3drender)
target_link_libraries(mytarget PRIVATE Qt6::3drender)
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qmake: QT += 3drender
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Inherited By:
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Instantiated By: qml-qt3d-render-alphatest.xml
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Inherits: Qt3DRender::QRenderState
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Group: QAlphaTest is part of renderstates
Detailed Description▲
As the OpenGL documentation explains; The alpha test discards a fragment conditional on the outcome of a comparison between the incoming fragment's alpha value and a constant reference value.
Member Type Documentation▲
enum QAlphaTest::AlphaFunction▲
Enumeration for the alpha function values
|
Constant |
Value |
Description |
|---|---|---|
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Qt3DRender::QAlphaTest::Never |
0x0200 |
Never pass alpha test |
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Qt3DRender::QAlphaTest::Always |
0x0207 |
Always pass alpha test |
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Qt3DRender::QAlphaTest::Less |
0x0201 |
Pass alpha test if fragment alpha is less than reference value |
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Qt3DRender::QAlphaTest::LessOrEqual |
0x0203 |
Pass alpha test if fragment alpha is less than or equal to reference value |
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Qt3DRender::QAlphaTest::Equal |
0x0202 |
Pass alpha test if fragment alpha is equal to reference value |
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Qt3DRender::QAlphaTest::GreaterOrEqual |
0x0206 |
Pass alpha test if fragment alpha is greater than or equal to reference value |
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Qt3DRender::QAlphaTest::Greater |
0x0204 |
Pass alpha test if fragment alpha is greater than reference value |
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Qt3DRender::QAlphaTest::NotEqual |
0x0205 |
Pass alpha test if fragment alpha is not equal to reference value |
Property Documentation▲
alphaFunction : AlphaFunction▲
Holds the alpha function used by the alpha test. Default is Never.
Access functions:
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alphaFunction() const
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void setAlphaFunction( alphaFunction)
Notifier signal:
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void alphaFunctionChanged( alphaFunction)
referenceValue : float▲
Holds the reference value used by the alpha test. Default is 0.0. When set, the value is clamped between 0 and 1.
Access functions:
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float referenceValue() const
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void setReferenceValue(float referenceValue)
Notifier signal:
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void referenceValueChanged(float referenceValue)