QAlphaTest Class
class Qt3DRender::QAlphaTestThe QAlphaTest class specify alpha reference test. More...
Header: | #include <QAlphaTest> |
qmake: | QT += 3drender |
Since: | Qt 5.7 |
Instantiated By: | AlphaTest |
Inherits: | Qt3DRender::QRenderState |
This class was introduced in Qt 5.7.
Public Types
enum | AlphaFunction { Never, Always, Less, LessOrEqual, Equal, …, NotEqual } |
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 |
---|---|---|
Qt3DRender::QAlphaTest::Never | 0x0200 | Never pass alpha test |
Qt3DRender::QAlphaTest::Always | 0x0207 | Always pass alpha test |
Qt3DRender::QAlphaTest::Less | 0x0201 | Pass alpha test if fragment alpha is less than reference value |
Qt3DRender::QAlphaTest::LessOrEqual | 0x0203 | Pass alpha test if fragment alpha is less than or equal to reference value |
Qt3DRender::QAlphaTest::Equal | 0x0202 | Pass alpha test if fragment alpha is equal to reference value |
Qt3DRender::QAlphaTest::GreaterOrEqual | 0x0206 | Pass alpha test if fragment alpha is greater than or equal to reference value |
Qt3DRender::QAlphaTest::Greater | 0x0204 | Pass alpha test if fragment alpha is greater than reference value |
Qt3DRender::QAlphaTest::NotEqual | 0x0205 | Pass alpha test if fragment alpha is not equal to reference value |